Question: About Hilbert and Physics


Question: What longest time ever was achieved at holding light in a closed volume?


Question: Functions of Time


Question: Special Relativity, 2nd Postulate -- Why?


Question: Man on a rope task


Question: Why are eigenfunctions which correspond to discrete/continuous eigenvalue spectra guaranteed to be normalizable/non-normalizable?


Question: Can there be Electron and/or Proton Stars?


Question: Does trade affect Earth's rotation?


Question: How much wind does it take to tip a sign over?


Question: What's the difference between inclusive and exclusive decays?


Question: Are continuous mathematical models of discrete physical phenomena messy because of a disconnect between “continuous” and “discontinuous”?


Question: Are gravitomagnetic monopoles hypothesized?


Question: How is the equation of motion on an ellipse derived?


Question: upwind vehicle exceeding the wind speed


Question: Infinities in Newtons law of gravity (for point particles)


Question: Self-contained book about complex systems and nonlinear dynamics


Question: What is the energy conversion efficiency of a computation device like a modern CPU?


Question: How does the sum of the series “1 + 2 + 3 + 4 + 5 + 6…” to infinity = “-1/12”?


Question: The Equivalence Principle approaching the speed of light


Question: Will the hole on a metal disc expand or contract upon heating?


Question: Intuition for multiple temporal dimensions


Question: Ice skater increase of energy


Question: In an absence of gravity, does time flow faster or slower than on Earth?


Question: The relationship between the Hubble Constant and cosmological time


Question: Why can't light waves bend?


Question: Current against the inverse of resistance graph, $I = V/R +c$


Question: If space is being doubled, how fast is it doubling?


Question: Proof of Spin-statistics theorem


Question: Gauge pressure vs. absolute pressure?


Question: Energy can't be created or destoryed?


Question: What is the Physical Meaning of Commutation of Two Operators?


Question: Renormalization of diagrams in QFT


Question: How can anything ever fall into a black hole as seen from an outside observer?


Question: Is it possible to speed up radioactive decay rates?


Question: Resource for nonphysicists about QM/GR incompatibility


Question: Suggestions for a physics oriented book on Variational Calculus


Question: How is the classical twin paradox resolved?


Question: Gaussian Integral by Substitution


Question: Significance of the second focus in elliptical orbits


Question: Hamilton's Principle


Question: Expanding universe space through matter or matter through space?


Question: What does Peter Parkers formula represent?


Question: What is the Earth truly rotating about/revolving around?


Question: Is there a proof of existence of time?


Question: How did WMAP measure the flatness of space?


Question: Hydrostatic pressure at the center of a water planet


Question: Do we weigh less in the morning?


Question: Is it possible to generate usable electricity from the motion or magnetic field of the Earth?


Question: What are good books for graduates/undergraduates in Astrophysics?


Question: How does lightning "know" where to go?


Question: A thought experiment with Heisenberg's Uncertainty Principle


Question: Proof of conservation of energy?


Question: Prove $[A,B^n] = nB^{n-1}[A,B]$


Question: What is the physical significane of Complex Time Evolution in EM Waves?


Question: Does magnetic propagation follow the speed of light?


Question: Does photon have size measurement because of its particle nature


Question: Calculating position in space assuming general relativity


Question: Will an object resting on a rotating platform move in a frictionless world?


Question: Can spacetime be non-orientable?


Question: Positive Mass Theorem


Question: Why is it that protons and electrons have exactly the same but opposite charge?


Question: Homework about spinning top


Question: Explanation about black color, and hence color


Question: Different formulas for calculating power


Question: How can we be sure that nature isn't "faking" quantum statistics?


Question: When lasers are used to cool atoms or ions, etc where does the heat go?


Question: Finding the Schwarzchild radius of a star of solar mass 30


Question: Why isn't dark matter just matter?


Question: Shifting the energy reference level


Question: Choice and identification of vacuums in AdS/CFT


Question: Reflection At Speed of Light


Question: Quantum mechanic newbie: why complex amplitudes, why Hilbert space?


Question: How can a proton be converted to a neutron via positron emission and yet gain mass?


Question: Is a hard drive heavier when it is full?


Question: Is time slowing down and disappearing from the universe instead of the expansion of universe?


Question: How does gamma ray emission make an atom more stable?


Question: An example of non-Hamiltonian systems


Question: Is there any way to read the Feynman Lectures for free?


Question: What color would you see if you place 2 mirrors in opposit when one is a one way mirror


Question: Don't Inertial forces obey Newton's third law?


Question: Question about Hubble's Law - expansion vs receding velocity


Question: Which Optics textbooks are good?


Question: How should a math undergrad student prepare himself to study GR and QM?


Question: Linearizing Quantum Operators


Question: Why are all force particles bosons?


Question: What point of application of force ensures more acceleration in a rod?


Question: Woodwind instruments overtones


Question: Resistors in para and series circuit, finding volt


Question: Dark matter and dark energy references


Question: Can inertial mass affect gravity of the object?


Question: de Broglie relations: calculate wavelength using two different approaches


Question: What happens when a black hole and an "anti-black-hole" collide?


Question: What actually is meant by wave nature of electron or any other material particles?


Question: Science behind the singing wine glass


Question: does matter radiate energy?


Question: Simple pendulum and perpetual motion


Question: Accelerating electrons via microwaves


Question: What happens to the energy when waves perfectly cancel each other?


Question: After what speed air friction starts to heat up an object?


Question: What does it mean for a QFT to not be well-defined?


Question: Multiple measurements of the same quantity - combining uncertainties


Question: Angular Momentum Conservation in Gravitational Interaction


Question: Richtmyer Meshkov instability in MHD


Question: What will be the shape of liquid if there is no gravitational force


Question: Is rigorous functional analysis useful for theoretical physics?


Question: How fast does force propagate through matter?


Question: What is the proof that the universal constants ($G$, $\hbar$, $\ldots$) are really constant in time and space?


Question: Is it possible for one black hole to pull an object out of another black hole?


Question: On a hot day, when it's cooler outside than in; is it better to put a fan in an open window pointing inwards or outwards?


Question: Why do the planets' orbital distances fall on an exponential curve?


Question: Would days be longer as the polar ice caps melt?


Question: From how deep into space can a human "skydive" back to earth?


Question: When would the proposed black hole at the centre of Milky Way gulp in our solar system?


Question: What is the formula for calculating the length of any given day (sunrise to sunset)?


Question: How could this damped oscillator ever go to infinity? Or negative infinity for that matter?


Question: What experiments prove the greenhouse effect?


Question: When they say that the universe cooled after the big bang, where did the heat go?


Question: What would the effect be of a small black hole colliding with the earth?


Question: Does gravity have any effect on sound waves?


Question: If both radio waves and gamma rays can travel through walls


Question: Wave theory limit of geometric optics?


Question: Why is light produced when an underwater bubble is collapsed with a sound wave?


Question: The secret behind the spinning, asymmetrically weighted, 2D disk-shaped top?


Question: How to make something charged using electricity?


Question: Canonical everyday-life example of a technology that could not work without humans mastering QM in analogy to the application of GR in GPS?


Question: Quarks are now considered to be fundamentals, but so were atoms some time ago. So the way we see is only limited by our technological advances?


Question: Very specific type of GR paper hunt


Question: What is a good non-technical introduction to theories of everything?


Question: The definition of Lagrangian


Question: What is the cause of the normal force?


Question: What exactly is a quantum of light?


Question: conversion of information to energy


Question: Meaning of the direction of the cross product


Question: Can air bubbles sink at extreme depths?


Question: Is quantum mechanics similar newtons laws of gravity? In a way


Question: String Theory- Are strings the end? What are they made of?


Question: Good Books on Gauge Theory


Question: Path integral formulation of quantum mechanics


Question: Is it possible (theoretically) to divide Black Hole into two parts?


Question: Any new texts directly on second law of thermodynamics?


Question: General relativity, gravity and spacetime curvature


Question: Superluminal expansion of the early universe how is this possible?


Question: Can a value of "length, in meters" be attributed to a pair of ends which are rigid (but not at rest) to each other?


Question: Gravity propagation speed


Question: How can I figure out how many kWh's are in a battery using the mAh's and voltage.


Question: Vortex in liquid collects particles in center


Question: how does the temperature of a gas increase when compressed by an external agent during sound production?


Question: How does a treadmill incline mechanism work?


Question: Conservation of Energy in a magnet


Question: Why is travelling around the speed of light a problem?


Question: Why will an accelerated electron emit a photon?


Question: What can the D-Wave quantum computer do?


Question: Understanding on quantum entanglement


Question: Work of Marie Curie?


Question: Red color has largest wavelenght and violet minimum (in the range of visible light). then why does violet light appears reddish? RED + BLUE = VIOLET


Question: How do gravitons and curved space time work together?


Question: Why do particular materials allow particular light waves to pass through them?


Question: Does Fire Conduct Electricity? Why?


Question: Why absence of electron is called hole?


Question: reflection at speed of light when both mirror and viewer is travelling at the speed of light


Question: Finding charge (electromagnetism course)


Question: What exists in the Space between atoms


Question: Why are atoms particles?


Question: Electromagnetic Field VS Photons


Question: Lorentz force in Dirac theory and its classical limit


Question: Half-Life Question


Question: A question about the higher-order Weyl variation for the geodesic distance


Question: What is difference between Inertial mass and gravitational mass


Question: Features used in quantum mechanics but not used in classical mechanics


Question: How exactly does curved space-time describe the force of gravity?


Question: What happens if an atom absorbs a photon of energy higher than first excited state but lower than second excited state?


Question: Why don't photons crash into each other occasionally? Or do they?


Question: What software programs are used to draw physics diagrams, and what are their relative merits?


Question: Why does calculus of variations work?


Question: gravitational lensing


Question: Size of Universe after inflation


Question: Blackbody radiation and Spectral Lines


Question: Reaching the speed of light, rockets


Question: What methods can astronomers use to find a black hole?


Question: What do physicists mean when they say "speed of light"?


Question: Integrating radial free fall in Newtonian gravity


Question: Why isn't Higgs coupling considered a fifth fundamental force?


Question: Do black holes exist?


Question: Is it possible to have a magnet which looks like a hollow cylinder and who's north is interior and south is exterior?


Question: What allows the modified Urca process to work at lower density than direct Urca in neutron star cooling?


Question: How does water evaporate if it doesn't boil?


Question: Is one way glass possible?


Question: Thermal radiation spectrum of a blackbody


Question: Are free electrons in a metal really free


Question: Should we necessarily express the dimensions of a physical quantity within square brackets?


Question: What were the intention/conclusions for Michelson-Morley experiment?


Question: Does mass affect speed of orbit at a certain distance?


Question: Countable Matrix Representation


Question: Derivation of Euler's equations for rigid body rotation


Question: Is microcausality *necessary* for no-signaling?


Question: When can one write $a=v \cdot dv/dx$?


Question: The Achilles Paradox


Question: Direction of Magnetic force from a current running through a coil of wire


Question: Capacitors discharging in series


Question: Atoms: boson or fermion?


Question: Why did the Earth cool down?


Question: Is it possible to blur an image in such way that a person with sight problems could see it sharp?


Question: Is there an upper limit to a rocket's size/payload?


Question: Photometer: measured Irradiance L converted to photon rate


Question: Can we actually prove with 100% accuracy that there is more than 3 dimensions plus time (t,x,y,z)?


Question: Is spacetime all that exists?


Question: Proving that interval preserving transformations are linear


Question: Does light accelerate or slow down during reflection?


Question: How do you change Planck's law from frequency to wavelength?


Question: Constants of infinity


Question: Can mass be totally converted into energy?


Question: Transportation using disintegration


Question: Why two balls of different mass dropped from the same height falls the ground at the same time?


Question: If lead's electron configuration ends with 6p$^2$, shouldn't it be paramagnetic?


Question: What's the standard "roadmap" to learning quantum physics?


Question: Atmospheric pressure experiment using a cup with a fluid to hold a glass plate


Question: Does the time for communication between moving objects solely account for each object to perceive the other object's clock to more slowly tick?


Question: How is the Schroedinger equation a wave equation?


Question: Could space itself be made out of particles?


Question: Measurement of Tangential Momentum Accomodation?


Question: Can we make images of single atoms?


Question: What are the implications if Supersting theory is discredited?


Question: What happens to matter in a standard model with zero Higgs VEV?


Question: Noether's current expression in Peskin and Schroeder


Question: Pendulum with water dripping out


Question: Why is gravitation force always attractive?


Question: Learning more about String theory


Question: How to find equation of motion for this trajectory? - object leaves curved ramp at a given velocity


Question: Relativistic Hamiltonian Formulations


Question: Integrating for speed


Question: How & Why does accelerating charges radiate electromagnetic radiation?


Question: Non-Degeneracy of Eigenvalues of Number Operator for Simple Harmonic Oscillator


Question: How do you find spin of a particle from experimental data?


Question: Reference on Chern-Simons theory


Question: Is there any case in physics where the equations of motion depend on high time derivatives of the position?


Question: Why "Dark Energy" is called energy instead of force?


Question: Density operators in a Hilbert Space


Question: Distance away from earth to see it as a full disk


Question: What happens when non-equal voltages are put in parallel?


Question: Is Dark Energy Pushing Us Or Pulling Us?


Question: Contracting Indices


Question: Why is a cycloid path the fastest way to roll a ball downward?


Question: Brachistochrone Problem for Inhomogeneous Potential


Question: What is the universe 'expanding' into?


Question: What is Mathematical formulation of entropic Gravitational force?


Question: Is the second law of thermodynamics a fundamental law, or does it emerge from other laws?


Question: The Higgs field a new Luminiferous aether?


Question: Is it possible for a physical object to have a irrational length?


Question: Expanding universe and the speed of light


Question: What formula connects the moment of inertia and angular velocity?


Question: Good and simple reference for studying about ADM mass


Question: What sort of jobs do physics graduates with B.Sc/M.Sc get?


Question: Dual nature of Matter at gross level


Question: Dumbed-down explanation how scientists know the number of atoms in the universe?


Question: Is temperature discrete


Question: Visualization of electromagnetic field


Question: Geocentric Model in General Relativity


Question: Why current through all the resistors in series is considered to be same?


Question: Information conservation during quantum measurement


Question: Newton and the change of mass with time


Question: About hubble observatory and distant galaxies


Question: How to explain $E=mc^2$ mass defect in fission/fusion


Question: Force with zero acceleration


Question: rephrasing my question on QFT and path intergrals?


Question: Fundamental question about dimensional analysis


Question: Centrifugal force acting on ring


Question: Why is uncertainty $\geq {\hbar}/{2} $


Question: Chemical potential of photons


Question: If sound travels through matter what medium does light travel through?


Question: If everything in the universe doubled in size overnight, would it be noticeable?


Question: Why does the refractive index depend on wavelength?


Question: How to define angular momentum in other than three dimensions?


Question: Attraction and repulsion of Magnetic materials


Question: Doppler Shift when Light Travels Through Two Different Mediums


Question: Why don't electric workers get electrocuted when only touching one wire?


Question: Does quantum mechanics depend solely on electromagnetic waves?


Question: What is the current state of research about the Hayden-Preskill circuit?


Question: Voltage in a short circuit system


Question: Entanglement in time


Question: What is the support for the suggestion that reality is a computer simulation?


Question: Exact Solutions to the Navier-Stokes Equations


Question: Special Relativity Textbooks Request


Question: Why is energy in a wave proportional to amplitude squared


Question: The interaction picture doesn't exist?


Question: Is Veneziano amplitude able to explain the physical properties of strongly interacting hadrons (such as proton and neutron)?


Question: Why can't some light ever reach earth?


Question: "Troll physics": Buoyancy for infinite power


Question: How can I understand work conceptually?


Question: Why doesn't our body gets crushed due to the atmospheric pressure?


Question: Momentum as Generator of Translations


Question: Calculating Hubble's constant at earlier times


Question: How can momentum but not energy be conserved in an inelastic collision?


Question: Gravity from energy


Question: Energy & Mass of a Photon


Question: Way to become a physicist


Question: Non-linear dynamics of classical hydrogen atom


Question: Detection of the Electric Charge of a Black Hole


Question: Expansion of a function


Question: How are current and voltage out of phase in capacitive circuit?


Question: How does Einstein got equivalent mass - energy equation E=mc2?


Question: Born's Rule, What is the Reason?


Question: Physics needed to build a top down billiards game


Question: What are "electron holes" in semiconductors?


Question: Why are the even and odd Regge trajectories degenerate?


Question: Is the converse of Noether's first theorem true: Every conservation law has a symmetry?


Question: Why do objects follow geodesics in spacetime?


Question: The Many Body problem


Question: Why fundamentally does classical mechanics lead to second order dynamics?


Question: exercise books for Feynman diagrams


Question: Proof of conservation of information


Question: Direction of friction when a car turns


Question: Spinning of the Earth


Question: Why do the planets orbit the Sun?


Question: What does it mean that the universe is "infinite"?


Question: Why does dilation invariance often imply proper conformal invariance?


Question: Naked singularity and extendable geodesics


Question: The Density of Clouds


Question: Capacitance of bodies with different charge


Question: Does string theory provide quantitative experimental predictions?


Question: On the atomic level how do permanent magnets work?


Question: A Basic Question about Gravity, Inertia or Momentum or something along those lines


Question: What does a sphere moving close to the speed of light look like?


Question: Time Dilation - How does it know which Frame of Reference to age slower?


Question: On becoming theoretical physicist


Question: Why does the sound pitch increase on every consecutive tick at the bottom of a filled cup of coffee?


Question: It's commonly said that the existence of antiparticles "saves causality". How?


Question: The collision of Phobos


Question: How to get Planck length


Question: Triboluminescence, how does it work?


Question: How do we make symmetry assumptions rigorous?


Question: Do spacelike singularities really exist in quantum gravity?


Question: What would happen to a person that was inside the Large Hadron Collider when it is turned on?


Question: Is it pions or gluons that mediate the strong force between nucleons?


Question: If you shoot a light beam behind the event horizon of a black hole, what happens to the light?


Question: Apparent paradox in equation of continuity


Question: Movement with non-constant acceleration


Question: Heat energy in special theory of relativity


Question: What will change if we have another Earth in the space near Earth?


Question: Why do we observe opposite motion of trees (nearer) and trees (distant) when seen from a moving frame?


Question: 3d holograms - How are they created?


Question: Why aren't quarks free?


Question: Why don't spinning tops fall over?


Question: Why is there a $\frac 1 2$ in $\frac 1 2 mv^2$?


Question: How much oxygen would be consumed on a 1 cm squared surface which is on fire?


Question: Within the context of string theory, is matter nothing more than a vibration on a membrane of space-time?


Question: Spectrum of Free Strings


Question: How did Newton find the relationship between force, mass and acceleration?


Question: Trapping a lightray


Question: Why is torque not measured in Joules?


Question: Does kinetic friction increase as speed increases?


Question: Cancelling special & general relativistic effects


Question: Space expanding, or light slowing down?


Question: Beginner question: timelessness of massless particles


Question: Why don't we see solar and lunar eclipses often?


Question: How to make a monopole magnet?


Question: Why doesn't a bus blow due to internal pressure?


Question: Why does Stephen Hawking say black holes don't exist?


Question: About the speed of light and gravity


Question: Why do we always see the same side of the Moon?


Question: Does the order of variables matter for a quantum Lagrangian in the path integral formula for quantum mechanics?


Question: Can we calculate the frame dragging force of the Earth?


Question: minimum possible absolute temperature in the universe?


Question: Could Dark Matter form black hole?


Question: Dark Energy / Accelerating universe: naive question


Question: Physics textbook for mathematicians


Question: Intuitively, what is the source term of the Einstein field equation?


Question: Different factors of $4\pi$ and $\epsilon_0$ in Poisson equation


Question: Does friction depend on the area between bodies thats in contact?


Question: Why there is no negative temperature


Question: Why does coke fizz more when you add ice


Question: Why is there still radiation left from the Big Bang now?


Question: What jobs can you get in the field of physics?


Question: The role of SO(3) and SU(2) in quantum mechanics


Question: Why must a singularity form inside a black hole?


Question: Why do some physicists believe that scalable quantum computing is possible?


Question: Prerequisites for Griffiths electrodynamics


Question: Time taken for object in space to fall to earth


Question: Why does a cuboid spin stably around two axes but not the third?


Question: Does the Standard model allow for radioactive decay prediction?


Question: Study Quantum Physics


Question: confusion on quantum field theory


Question: Why does the universe exhibit three large-scale spatial dimensions?


Question: Introduction to AdS/CFT


Question: What is the difference between a white object and a mirror?


Question: What are those characteristics by which every sound can be identified uniquely?


Question: How to find orbital radius of star in a binary system using redshift and orbital period data?


Question: What's the proof that the polarization occur s to the electric field of the light?


Question: Trying to understand the tension in a spring with two weights attached


Question: Dependence of Force as a function of Distance?


Question: What combinations of realism, non-locality, and contextuality are ruled out in quantum theory?


Question: Is there a good chance that gravitational waves will be detected in the next years?


Question: What is the variable plotted on the y-axis on these Higgs exclusion graphs?


Question: How is a vacuum able to propagate light?


Question: Special Relativity and time


Question: What is the conclusion from Aharonov-Bohm Effect?


Question: How is light affected by gravity?


Question: Why does it seem like a broken magnet's poles flip?


Question: Will the night sky eventually be bright?


Question: Why are continuum fluid mechanics accurate when constituents are discrete objects of finite size?


Question: Video lectures on graduate level Classical Electrodynamics


Question: Schrodinger's cat experiment


Question: Are there formulae for calculating stellar luminosity and effective temperature as a function of age?


Question: How does quantum trapping with diamagnets work?


Question: Neutrino unaffected by gravity


Question: Do two beams of light attract each other in general theory of relativity?


Question: What sets a "Law" apart from a "Rule" or a "Principle"?


Question: Halliday resnick physics book


Question: Is the universe flat?


Question: Work done by magnetic field


Question: Open-source up-to-date cosmological datasets


Question: Formula for Symmetry Factor


Question: About the Ether Theory acceptance


Question: Do Hydrinos Exist?


Question: In what order should the subjects be studied in order to get to String Theory


Question: Is the trajectory of the Moon around the Earth stable?


Question: Analytic solution for angle of minimum deviation?


Question: Current in a strip - Scalar or vector


Question: What keeps objects made of gold apart?


Question: Mathematical calculation of probability of existence of planet similar to earth


Question: Intuitive meaning of Dot Product


Question: How much electric charge do electromagnetic waves carry?


Question: Guinier regime for form factor


Question: Is acceleration relative?


Question: How are the definitions of a coherent state equivalent?


Question: Why electrons can't radiate in their atoms' orbits?


Question: Can expansion of space create energy?


Question: How can we deduce the relation $m = \frac{m_0}{\sqrt{1-\frac{v^2}{c^2}}}$ between relativistic mass and rest mass in special relativity?


Question: Why does holding something up cost energy while no work is being done?


Question: Is colour, as represented using primary colours, accurate only to humans?


Question: Is the universe a quantum computer - is light speed barrier a computational constraint


Question: Why can we skate on ice?


Question: How occurs the enantiomorph of the mirror?


Question: At what speed will objects hit a singularity?


Question: Calculate the average temperature needed for hydrogen fusion reaction


Question: Electromagnet emitting light


Question: Why does a floating balloon in an accelerated train moves forward but the pendulum moves backward?


Question: Is temperature of a single molecule defined?


Question: What actually happens when an anti-matter projectile collides with matter?


Question: How does heat actually stay kept in the carbon molecules in the atmosphere?


Question: The paradoxical nature of Hawking radiation


Question: In a neutron star - what force keeps the neutrons from getting closer and closer?


Question: Applications of low-dimensional topology to physics


Question: The universe could have created itself?


Question: Black Hole gravity pull


Question: Exchange particles-real or just mathetical constructs?


Question: What's the relationship between $SL(2,\mathbb{C})$, $SU(2)\times SU(2)$ and $SO(1,3)$?


Question: Question about two masses connected by a spring


Question: What is the fastest process or shortest time in nature?


Question: How do you calculate power at the focal point of a mirror?


Question: Harmonic Motion


Question: Why shouldn't the uncertainty principle be interpreted as an observer effect?


Question: Is there an EMF in a conductor moving at constant speed across the uniform magnetic field


Question: Does juggling balls reduce the total weight of the juggler and balls?


Question: How do photons know they can or can't excite electrons?


Question: How could the relative zero gravity of the International Space Station be canceled?


Question: Why is there no absolute maximum temperature?


Question: Higgs boson and other properties of particles.


Question: Magnet motor free energy generator


Question: How much extra distance to an event horizon?


Question: What is the formula for determining time dilation (as the object in motion)?


Question: What happens if the earth stops rotating?


Question: Alternating Current Inquires


Question: How does electron move around nucleus?


Question: Do atmospheric physics prevent hot air balloons from ascending over 60,000ft?


Question: How were the crystal lattices of elements determined to perfection ? (Ex:- That of a copper is a cubic lattice )


Question: Can someone be too late for being a great physicist?


Question: Maximum voltage on metal sphere?


Question: What moves an object? Momentum or Kinetic Energy?


Question: Linear motion with variable acceleration


Question: Static friction greater than kinetic friction


Question: Do oceans produce the cosmic microwave background?


Question: Maximum limit on the number of paper-folds possible after tearing into halves


Question: Can 'Backradiation' warm its own source?


Question: How small are the smallest black holes?


Question: Why work to change velocity from 0 to 20 km/h is less then from 20 to 40?


Question: Why, when one opens 1 car window, does that noise occur?


Question: Dark Energy saving the world


Question: Do COBE, WMAP, or Planck data show time-variance of the CMB's anisotropies?


Question: Energy efficiency of antimatter producion


Question: Is this a good explanation of the Higgs mechanism?


Question: Rolling (without slipping) ball on a moving surface 2


Question: Singularity in a black hole


Question: Is it possible for a planet to be made entirely of water (even it's core)?


Question: Why do they store gold bars with the narrow side down?


Question: Relativity's effects on centripetal motion


Question: Magnetic field lines


Question: Calculate analytically the time until two spheres meet due to gravitation


Question: Two explanations of non-zero atomic radius


Question: What are the mechanics by which Time Dilation and Length Contraction occur?


Question: Books that every layman should read


Question: Paradox with Gauss' law when space is uniformly charged everywhere


Question: Why doesn't the Moon fall upon Earth?


Question: Matlab package: graphical calculus for quantum operations (esp. linear optics)


Question: Does gravity weaken by the square of the distance because the energy is dispersed over the square of the distance


Question: The potential and the intensity of the gravitational field in the axis of a circular plate


Question: Is it wasteful to use a heating element, instead of doing useful work?


Question: Why is the earth shaped like a sphere and not any other shape: cube, prism?


Question: Can a deformable object "swim" in curved space-time?


Question: High Frequency Active Auroral Research Program (HAARP) And Earthquake Myth or Reality?


Question: atomic friction


Question: When do I apply Significant figures in physics calculations?


Question: Which is easier, pushing or pulling?


Question: Has the concept of non-integer $(n+m)$-dimensional spacetime ever been investigated by theoretical physicists?


Question: How does a simple weighing balance actually work?


Question: Why does the air flow faster over the top of an airfoil?


Question: Magnetic field resistance material: are there any?


Question: Basic understanding of stress tensors in a fluid


Question: Why this perpetuum mobile can't be possible?


Question: Elastic potential energy of compressed spring?


Question: Help Me Gain an Intuitive Understanding of Lorentz Contraction


Question: Angular Momentum of a rigid, extended object


Question: Two particles interacting by a inverse-square-law force, find their positions in function of time


Question: How is it possible to come to a conclusion that Universe is a result of the Big Bang while we aren't able to observe the entire Universe?


Question: do quantum fields exist in superposition?


Question: If Earth Were Filled with a Compressible Fluid and Spun Really Fast, What Hollow Would Form?


Question: What is the meaning of speed of light $c$ in $E=mc^2$?


Question: What's the difference between electron movement and charge movement in electricity?


Question: How many physical degrees of freedom does the $\mathrm{SU(N)}$ Yang-Mills theory have?


Question: Speed of light in a given direction based on frame of reference


Question: Nuclear structure


Question: Speed greater than light in circular motion


Question: Speed of a fly inside a car


Question: Impurity scattering temperature dependence


Question: Why do neutrinos propagate in a mass eigenstate?


Question: Lecture Notes to Learn Quantum Field Theory


Question: Evidence for expansion of space


Question: Jump from a falling object


Question: does time exist in space or does space exist in time


Question: current in wire + special relativity = magnetism


Question: How can black holes have gravity?


Question: Charging 12V 150Ah battery


Question: Exeeding the speed of light by adding velocities


Question: Is the Lorentz force conservative?


Question: How can I modify the bullet trajectory based on the ballistic coefficient?


Question: Time Slowing Down


Question: Sign convention for mirror and lens formulas


Question: Planck length implies lattice structure of space?


Question: Speed and Velocity Worksheet


Question: How do I find the frictional force using a free body diagram?


Question: A No-Nonsense Introduction to Quantum Field Theory


Question: Intrinsic structure of electron


Question: Why two objects get charged by rubbing?


Question: Newtons Cradle, Collision Theory


Question: Why is the Lagrangian quadratic in $\dot{q}$?


Question: The "Nerd Sniping" problem. Generalizations?


Question: Why does dust stick to rotating fan propeller?


Question: Has the black hole information loss paradox been settled?


Question: What is the role of center-tapping in a full wave rectifier?


Question: Is a heavier skier faster?


Question: Physical meaning of force times area


Question: Where do electrons get their ever-lasting circulating energy?


Question: Why would an electron in an orbit be accelerating continuously and would thus radiate away its energy and fall into the nucleus in a classical model?


Question: Good Magnetic Simulation Software?


Question: Ultrasonic wave through air


Question: Modern references for continuum mechanics


Question: How do I calculate the (apparent) gravitational pull with General Relativity?


Question: Dark energy and dark matter


Question: Because position is relative, is it possible to see a star orbiting a planet?


Question: Best way to chill a cup of coffee with cold water and 5 minutes


Question: How to find the value of the parameter $a$ in this transfer function?


Question: What's the most efficient way to study physics?


Question: Logical requirement of newton's third law


Question: Estimating the present state of stars


Question: What is the present state of Mach's Principle amongst physicists?


Question: How are the triangular Lagrange points in a Three body Problem stable, yet having a higher effective potential?


Question: Has NASA confirmed that Roger Shawyer's EmDrive thruster works?


Question: Why $\vec F=m\vec a$ instead of $\vec F=m\vec v$?


Question: Origin of lepton/quark generations?


Question: Is rotational motion relative to space?


Question: Is there experimental evidence that massless particles such as photons attract massive objects?


Question: What happens to an embedded magnetic field when a black hole is formed from rotating charged dust?


Question: Second Rank Tensors


Question: Supersymmetry in Quantum Field Theory


Question: Black holes and positive/negative-energy particles


Question: How do electrons know which path to take in a circuit?


Question: Noticing that Newtonian gravity and electrostatics are equivalent, is there also a relationship between the general relativity and electrodynamics?


Question: Understanding weight on an inclined plane


Question: Massless charged particles


Question: Jumping in an elevator?


Question: How can you use magnets to rotate a shaft, which in turn powers a generator?


Question: Is everyone seeing the same color as I see?


Question: What would happen if I was in the centre of the Earth?


Question: Topics in particle cosmology


Question: Photon energy - momentum in matter


Question: electric field inside a conductor?


Question: Why isn't temperature measured in Joules?


Question: Why are the 'color-neutral' gluons confined?


Question: Why are snowflakes symmetrical?


Question: Nonzero ground state energy of the quantum harmonic oscillator


Question: Does mass affects accelleration of an object in a sloapy movement?


Question: Why is cold fusion considered bogus?


Question: Calculating restorative force with Hooke's Law


Question: Water Displacement in the Oceans As a result of Global Warming


Question: How could vacuum energy cause the expansion of the universe?


Question: Flying a toy helicopter inside an accelerating train


Question: Are Lorentz force and maxwell's equations independent?


Question: Negative chemical potential


Question: What constitutes an observation/measurement in QM?


Question: If the source of sound is vibration, why can't we "hear" a object whose molecules are vibrating?


Question: What are the Time Operators in Quantum Mechanics?


Question: Reading the Feynman lectures in 2012


Question: Derivation of Newton-Euler equations of motion


Question: Do all massless particles (e.g. photon, graviton, gluon) necessarily have the same speed $c$?


Question: Hurdles in creating (close to) infinite images


Question: Why treat complex scalar field and its complex conjugate as two different fields?


Question: Light orbiting a massive body


Question: What causes a blackbody radiation curve to be continuous?


Question: Why is pressure always non directional?


Question: ALL "forces" as manifestations of properties of space-time


Question: Why is the Ampere a base unit and not the Coulomb?


Question: What is the difference between a spinor and a vector or a tensor?


Question: When water climbs up a piece of paper, where is the energy coming from?


Question: Hubble time and its derivation?


Question: Understanding field representation of force


Question: Many-worlds: how often is the split how many are the universes? (And how do you model this mathematically.)


Question: Why does the Boltzmann factor $e^{-E/kT}$ seem to imply that lower energies are more likely?


Question: Why do we seek to preserve gauge symmetries after quantization?


Question: Antimatter in the universe


Question: Why does time reversibility imply equilibrium in a thermodynamic system?


Question: Is light electromagnetic waves or quantumn particle waves?


Question: Why doesn't the light from galaxies appear stretched?


Question: Two balls falling one above the other


Question: Why does ice form on bridges even if the temperature is above freezing?


Question: Active noise cancellation technology measurements


Question: Air flow coming out of a fan feels much stronger than air flow coming in. Why?


Question: Why aren't gas planets and stars fuzzy?


Question: Linear Algebra For Physicists (Book Recommendations)


Question: Why does Fukushima pressure rise?


Question: Can solar furnace achieve higher temperature than sun surface?


Question: Elastic Collision Between Two Objects


Question: Is cosmic background radiation absolute


Question: Gauss's (Divergence) theorem in Classical Electrodynamics


Question: how does an electric field comes inside a conducting wire inside the circuit?


Question: Magnifying Glass-How does it work?


Question: Identification of particles and anti-particles


Question: Did space and time exist before the Big Bang?


Question: Why is there a limit to the intensity of cosmic rays at low energies?


Question: Suggested reading for renormalization (not only in QFT)


Question: Why does Newton's Third Law not preclude any motion at all?


Question: Torque direction meaning


Question: Rolling disk in inclined plane and flat plane?


Question: Is there a Non-perturbative renormalization algorithm?


Question: Why do we say that light travels at a speed?


Question: Variational Calculus or Tensor Calculus?


Question: Flames with no gravity?


Question: How do stars look like from space?


Question: Ascertain the height an object has fallen from given force exerted and mass


Question: What's the shear rate in a turbulent flow?


Question: Why do current and electrons flow in opposite directions?


Question: To which extent is general relativity a gauge theory?


Question: Physics breakthroughs in the last two decades


Question: How could spacetime become discretised at the Planck scale?


Question: How to find the potential energy?


Question: Is the Speed of Light an universal spacetime constant, the velocity of electromagnetic waves, or of photons?


Question: What would the properties of a particle be that would allow light to orbit it?


Question: Radiation– white vs black house, hot or cool?


Question: Determining a radio signal's range


Question: What conservation law corresponds to Lorentz boosts?


Question: Are there any applications of elementary number theory to science?


Question: Why graviton is spin 2 instead of spin 1?


Question: What is invisible to x-rays?


Question: General Relativity and Time Dilation


Question: Learning roadmap for solid state physics


Question: Why do electrons and protons attract each other?


Question: Physical interpretation of Fermi golden rule?


Question: Intuitive understanding of centripetal vs. centrifugal force


Question: Quantum Mechanics and Direction of time


Question: Is apparent horizon curvature lesser due to refraction of light in the atmosphere?


Question: The meaning of imaginary time


Question: Measurements and simultaneity


Question: Software for simulating 3D Newtonian dynamics of simple geometric objects (with force fields)


Question: Gravitational slingshot of light using a black hole/massive object


Question: If the Sun were to suddenly become a black hole of the same mass, what would the orbital periods of the planets be?


Question: Are tidal power plants slowing down Earth's rotation?


Question: Is there a difference between a postulate and a principle in physics?


Question: Why stars twinkle but planets don't?


Question: How are classical optics phenomena explained in QED (Snell's law)?


Question: Kinematics question - Newton's Law of Motion


Question: Maximum theoretical data density


Question: How to correct flares and sharply focus on my telescope when viewing planets.


Question: Why do Calabi-Yau manifolds crop up in string theory, and what their most useful and suggestive form?


Question: electric charge is a intrinsic property how is there a prpoer way to explain electric charge?


Question: Extra dimensions and the big bang


Question: Calculating impact velocity and time with non-uniform acceleration


Question: What are the properties and characteristics of a single Quantum?


Question: Train crash: are these situations alike?


Question: Caldeira-Leggett Dissipation: cannot get it


Question: How does a half-life work?


Question: Why is it that using cell phone can invite lighting strike?


Question: In quantum mechanics, why position and momentum are related by Fourier Transformation(only)?


Question: Why do we think there are only three generations of fundamental particles?


Question: What state is fire? Solid, Liquid or Gas or Plasma?


Question: Linearized equations


Question: Why does Guillotine have of 45 degreed blade rather than the one parallel to the ground?


Question: Is there a way I can prevent static electricty buildup from shocking me?


Question: Spring constant


Question: Do ideal gases at zero Kelvin have potential energy?


Question: Why are higher order Lagrangians called 'non-local'?


Question: finding angular velocity and regular velocity when bouncing off a surface with friction


Question: Why does Quantum Field Theory use Lagrangians rather than Hamiltonains?


Question: Thermo-Emf variation with temperature


Question: Virtual photons, what makes them virtual?


Question: Gauge Higgs Unification


Question: Why does the moon look bigger at the horizon?


Question: Why didn't a black hole form right after the Big Bang?


Question: Spin - where does it come from?


Question: General Relativity and the effect of mass on time


Question: Why does adding solutes to pure water lower the the specific heat?


Question: Can you run away from your shadow?


Question: Do cosmologically redshifted photons violate energy conservation?


Question: galaxies fading away after time


Question: Angular Momentum Conservation Definition


Question: How does the curiosity rover get it's power?


Question: Chance of objects going against greater entropy?


Question: Chemistry from a physical perspective


Question: How to bend light?


Question: Steps involved in photon emission


Question: How does non-commutativity lead to uncertainty?


Question: Rutherfords alpha scattering conclutions?


Question: Why are we not using thorium for energy?


Question: QFT as a rigorous mathematical theory


Question: Will the moon really escape the Earth?


Question: Why do fields decrease with distance?


Question: What is the difference between light and visible light?


Question: I read a book saying bernoulli's flight equations didn't have as much impact on lift as most people think


Question: How does dark matter halo outside a galaxy help to explain galaxy rotation curve?


Question: How does an inflationary universe solve the Flatness Problem, Horizon Problem and Monopole Problem?


Question: Group Theory in General Relativity


Question: Stationary action with maximized action


Question: A pendulum clock problem


Question: Time dilation at a black hole


Question: Travel duration from Earth to a star at 9.8 m/s² acceleration


Question: Why does the speed of light $c$ have the value it does?


Question: Disk spinning at the speed of light


Question: Particle physics getting started


Question: Phase shift of 180 degrees on reflection from optically denser medium


Question: Why do we still not have an exact definition for a kilogram?


Question: Freezing water in a closed container


Question: Is the geometric formulation of Hamiltonian mechanics really necessary?


Question: In what limit does string theory reproduce general relativity?


Question: Could two different bases of a Hilbert space have different cardinality?


Question: How do we know that light is massless?


Question: A flying fly inside a sealed box on a scale


Question: What is gravitational speed for a black hole?


Question: Virtual particle production in space-time.


Question: Relation between water flow and pressure


Question: Time for two objects to gravitationally attract each other


Question: Is "now" the bounding edge of the universe in the time dimension?


Question: Software for geometrical optics


Question: A question on quantum computing?


Question: What counts as "observation" in Schrödinger's Cat, and why are superpositions possible?


Question: Does the Sun produce audible sound?


Question: Question Based On Units And Measurements Involving Lengths


Question: Different perspective in Quantum mechanics


Question: Electric field outside nonconducting sphere


Question: Why color of dress changes when water falls?


Question: Can you split a photon?


Question: How does atmospheric pressure work?


Question: Algorithm of Lightning Strikes?


Question: Change in momentum


Question: How can a wooden spoon be used to prevent water from over boiling?


Question: Is fire matter or energy?


Question: Is $V= V_1 + V_2$? horrible question but im confused


Question: How to deduce the theorem of addition of velocities?


Question: Airplane on a treadmill


Question: Are galactic stars spiraling inwards?


Question: A black torch to darken everything


Question: Force applied off center on an object


Question: Maximum helicopter height


Question: Why do the electron in Bohr's principal quantum levels or ground state do not emit radiation?


Question: Is the Pauli exclusion principle as Brian Cox described it?


Question: Why not an Electric Theory of Everything?


Question: Is electricity instantaneous?


Question: Water coolso object by heat absorption


Question: Why lagrangian is negative number?


Question: Does it exist a free good molecule / atom simulation software?


Question: Why do metal objects in microwaves spark?


Question: Why do non-Newtonian fluids go hard when having a sudden force exerted on them?


Question: How to model a rising helium balloon?


Question: Is Gravity an entropic force after all?


Question: What would an observer see if he/she flew toward a clock at relativistic speeds?


Question: Force applied on the ground


Question: Measuring extra-dimensions


Question: Where can I find beginner's information about quantum mechanics?


Question: Smolin on Cosmological selection and neutron stars


Question: What is the relation between electromagnetic wave and photon?


Question: Why aren't superconductors shiny?


Question: Does a 27 hp engine output the same amount of energy as lifting a 1 ton stone block almost 3 meters per second?


Question: Time, distance perception


Question: What is the weight equation through general relativity?


Question: Intuitive meaning of Hilbert Space formalism


Question: What do we mean by electromagnetic charge?


Question: Why is the camera not the culprit?


Question: Displacement of a Rock Thrown Overboard


Question: Cubic symmetry and a stiffness tensor


Question: How can you calculate how fast a spinning ring/cylinder will accelerate a mass via gravitomagnetism?


Question: What are the potential technological advances that the discovery of the Higgs boson may unlock?


Question: Relating Quantum Mechanics to Classic Electromagnetism


Question: How can I understand a Vortex Tube and its efficiency?


Question: How Can There Be Magnetic Force Without Velocity


Question: What "time" is it for or on Voyager 1? If you could be "still" in the Universe who fast would time be?


Question: Photon speed going from $0$ to $c$ initially?


Question: Home experiments to derive the speed of light?


Question: Can a particle be *physically* observed inside a quantum barrier?


Question: Are gravitational waves transverse or longitudinal waves, or do they have unique/unknown properties?


Question: Strongest force in nature


Question: Why don't we consider centrifugal force on a mass placed on earth?


Question: exponential potential $ \exp(|x|) $


Question: Reducing the Tsunami impact using Nuclear bombs


Question: Why magnetic field generates around current carrying wire?


Question: Wind generators - why so few blades?


Question: How are symmetries precisely defined?


Question: Book covering Topology required for physics and applications


Question: How does the evolution of a solar system not break the second law of thermodynamics?


Question: How can a single slit diffraction produce an interference pattern?


Question: Projectile with air resistance


Question: Why are alpha particles such a prominent form of radiation and not other types of nucleon arrangement?


Question: Derivation of formula of potential energy by a conservative force


Question: Why are orbits elliptical?


Question: How does a black hole slow time?


Question: Colors from a computer vs. colors from visible spectrum of sunlight


Question: Inertial frames of reference


Question: Is the total angular momentum of the universe zero?


Question: Why earth looks always flat when it is round


Question: interaction of mathematical structures (rephrased)


Question: The speed of light as it approaches a massive body


Question: What is the possibility of a railgun assisted orbital launch?


Question: How functions become operators in quantum mechanics?


Question: When Physicists thought neutrinos were faster than the speed of light


Question: What is movement through time?


Question: Is spacetime simply connected?


Question: What's the difference between Fermi Energy and Fermi Level?


Question: How is Gauss' Law (integral form) arrived at from Coulomb's Law, and how is the differential form arrived at from that?


Question: Online lecture videos on QCD?


Question: If I travel close to the speed of light and come back, why is everyone else dead, and not me?


Question: How do you prove $S=-\sum p\ln p$?


Question: What is a natural movement of a ball on a upward curve (the two arrow lines pointing upward) given no external force?


Question: How does the Higgs mechanism work?


Question: Simulator for electrostatics


Question: Why do people still talk about bohmian mechanics/hidden variables


Question: Force on rope with accelerating mass on pulley


Question: What evidence is there for the Big Bang Theory?


Question: Antiparticles as "holes" of the quantum fields?


Question: Amplitude of an electromagnetic wave containing a single photon


Question: Quick introduction to electromagnetism / Maxwell's equations


Question: Can someone give an intuitive way of understanding why Gauss's law holds?


Question: Is powered delivered to an Incandescent light bulb changing with time?


Question: Effects of magnetic fields on our bodies


Question: What exactly is a kilogram-meter?


Question: Baryon asymmetry


Question: Quarks and anti-quarks forming particles


Question: Are Newton's "laws" of motion laws or definitions of force and mass?


Question: Acceleration reaches speed of light?


Question: Geodesic for Electromagnetic forces


Question: Why do springs have helical shapes? Why do we not use a cylindrical rod as a spring?


Question: Are there anti entropic agents


Question: What are some useful ways to imagine the concept of spin as it relates to subatomic particles?


Question: Helicopter in an Elevator


Question: Can pressure in bars be equated to flow in litres per second?


Question: Are there any good audio recordings of educational physics material?


Question: Why are people weightless whilst in orbit around the Earth? ISS? Satellites?


Question: Derivation of the Biot-Savart Law


Question: What causes an electric shock - Current or Voltage?


Question: Why doesn't a fly fall off the wall?


Question: How is traveling back in time possible in theory according to some scientists?


Question: Energy needed to raise energy level of an atom?


Question: How can we know that a black hole exists?


Question: Is anti-matter matter going backwards in time?


Question: Why do people recommend wider tyres in car for better road grip?


Question: Laws and theories


Question: Leg Press & Actual Lifted Weight


Question: Time dilation at the Big Bang


Question: How are the northern lights produced?


Question: Phase shift of resonance


Question: What is the minimum amount of fissile mass required to acheive criticality?


Question: How a fan moves air?


Question: The sound when boiling water


Question: Can light be launched outwards from an event horizon?


Question: Physical reason why (hot) objects glow?


Question: Centrifugal force when there is no friction


Question: What is the nature of energy?


Question: Does a black hole singularity last essentially no intrinsic time?


Question: Nuclear Fission and Fusion


Question: Books for Condensed Matter Physics


Question: What does 1/k represent regarding Newtons Law of Cooling?


Question: Why does a cork float to the side of a glass?


Question: Can we use quantum entanglement as a way to send information or data?


Question: Can one do the maths of physics without using $\sqrt{-1}$?


Question: How would it be to look at the sky if the earth were near the edge of the universe?


Question: Problem on nuclear physics radioactivity


Question: Explanation of photon reflection


Question: Calculation of torque for motor used in 4 wheel robot


Question: If 'pure energy' is photons, and energy is conserved, how can matter and antimatter (electrons and positrons) annihilate into photons and vice-versa?


Question: Was the mass of the universe the same when it first began as it is now?


Question: Could a super conductor actually be used to repel gravity?


Question: Universal speed limit


Question: Can the laws of classical mechanics be derived from quantum mechanics?


Question: What if there was a hole between earth poles


Question: The square in the Newton's law of universal gravitation is really a square?


Question: Resistor circuit that isn't parallel or series


Question: Does light reflect if incident at exactly the critical angle?


Question: Did the researchers at Fermilab find a fifth force?


Question: Is there a way to save electricity from lightning?


Question: Visualisation of formation of electromagnetic waves


Question: Does the slinky base stay perfectly level during the initial free fall


Question: What are direction ratios?


Question: The relationship between angular and linear momentum


Question: Hubble time, the age of the Universe and expansion rate


Question: Are we inside a black hole?


Question: Classical mechanics without coordinates book


Question: Why do physical bodies in the universe follow the law of physics ( or any rule/pattern ) ?


Question: Einstein's postulates <==> Minkowski space. In layman's terms


Question: What gives matter Gravitational Mass?


Question: If photons can be absorbed by electrons, wouldn't that mean light has a charge?


Question: History of interpretation of Newton's first law


Question: Isn't Dark Matter just an Indication that Relativity breaks down when describing large masses?


Question: The future of supersymmetry


Question: Why can microwave (in microwave oven) heat the food but wifi can't?


Question: Experimental study of the Photoelectric effect


Question: Electricity directly from heating a material


Question: Would it be possible to transmit information through gravitational waves?


Question: Superconductivity reasons (Intutitive)


Question: Best books for mathematical background?


Question: Does the renormalization group apply to string theory?


Question: Can a gravitational field be diluted or shielded?


Question: Some basic questions about electric field & nucleus


Question: Is gravitational time dilation different from other forms of time dilation?


Question: Can statistical mechanics explain the second law completely?


Question: Do current models of particle physics explain the chemical properties of elements/compounds?


Question: Buzzing/Vibration in body under power lines


Question: Is it possible for a photon to be at rest?


Question: Sum of independent errors


Question: Slit screen and wave-particle duality


Question: Helpful tutorials on force


Question: Why can't airplanes just keep going up?


Question: Optics of a rotated spectacle lens


Question: What does "the ${\bf N}$ of a group" mean?


Question: Would Beetee's electrocution plan work and kill the tributes in the lake?


Question: Is gravitational acceleration less affected by relativistic mass increase?


Question: Stability of neutron


Question: Why are coordinates and velocities sufficient to completely determine the state and determine the subsequent motion of a mechanical system?


Question: Bathroom photons from the edge at the universe


Question: How can ice cubes contain gas bubbles?


Question: Can a dot of light travel faster than the speed of light?


Question: Designing a plausible faster than light drive: the Space Skip Drive


Question: Evidence that the Solar System is expanding like the Universe?


Question: Is the Higgs particle the final one predicted by the Standard Model?


Question: What is the difference between implicit and explicit time dependence e.g. $\frac{\partial \rho}{\partial t}$ and $\frac{d \rho} {dt}$?


Question: Does the unit of Inertia include radians?


Question: Number of planks required to stop the bullet


Question: Archimedes' principle: innacurate terminology?


Question: Why photon has a wave nature?


Question: Is the system of equations of electrostatics underdetermined or overdetermined?


Question: Formulas for compressibility of solids (physics)


Question: Pendulum period of different masses


Question: Why does photon have only two possible eigenvalues of helicity?


Question: What happens to things when things get crushed in a blackhole


Question: What is the symmetry which is responsible for preservation/conservation of electrical charges?


Question: Pressure of sealed in liquid nitrogen


Question: Is it possible to have a perfectly black material?


Question: What is the entropy of the universe today?


Question: Can superconducting magnets fly (or repel the earth's core)?


Question: Does the scientific community consider the Loschmidt paradox resolved? If so what is the resolution?


Question: Flushing water-Is it related to Coriolis force?


Question: Is the universe fundamentally deterministic?


Question: Why does light travel at the same speed when measured by a moving observer?


Question: Calculating a 2D collision between two perfectly circular disks


Question: Why would Antimatter behave differently via Gravity?


Question: Balloons and lifting gases


Question: If the earth left the solar system for interstellar space. How long would it take for atmosphere to freeze


Question: How soon that a force affect another object?


Question: Does the sign of $\Delta x$ matter in this time dilation calculation?


Question: Drag force at high speeds


Question: Why do tuning forks have two prongs?


Question: Statistical Entropy and Information theory


Question: Good book about elementary particles for high school students?


Question: What is the "Event Horizon" of a black hole


Question: Are there any naturally occurring perfect circles?


Question: Photoelectric Effect, Why can't two quanta interact with an electron at the same time?


Question: Experimental evidence for parallel universes


Question: What is the required prerequisite knowledge of QM, for starting QFT?


Question: Can black holes actually merge?


Question: Uniqueness of eigenvector representation in a complete set of compatible observables


Question: Is it possible to create matter?


Question: Does more rain strike a vehicle while moving or while stopped (or neither)?


Question: Why does the light bulb's brightness decrease?


Question: Why the orbital angular momentum equal zero for electron in s state? does it mean that the electron doesn't orbiting in s


Question: Why is the sky not purple?


Question: Observing lunar lander and footprints on the moon?


Question: Elastic collision in two dimensions


Question: Why do Lagrangians and Hamiltonians give the equations of motion?


Question: Age of the Earth and the star that preceded the Sun


Question: Experimental proof of the principle of superposition in QM


Question: Can I measure a journey time < 100 years on a 100 light year voyage?


Question: Where does mass come from?


Question: Why do surfaces act like barriers for electrons?


Question: Is there anything smaller than a quark?


Question: Uncertainty and wave-trains


Question: Diffraction by a lens


Question: Can nuclear transmutation be observed in real time?


Question: Can a submerged place in the sea have huge air pockets?


Question: Is there any relationship between gauge field and spin connection?


Question: Validity of naively computing the de Broglie wavelength of a macroscopic object


Question: Why you need a graviton when you have the higgs boson?


Question: Does light color change when refracting?


Question: How does Annihilation work?


Question: How does the Higgs Boson gain mass itself?


Question: Why is the wave function complex?


Question: If I'm floating in space and I turn on a flashlight, will I accelerate?


Question: Would atmosphere of Jupiter blow up if I launched a atomic bomb there?


Question: Amateur's question on Black Holes


Question: While Space-man lives for 1 day, then how long does Earth-man live ? 1000 years or 1 second?


Question: The nature of the gravity force: Is it attractive or repulsive between positive and negative mass?


Question: How does displacement current come about?


Question: Doughnut magnet


Question: Facts About Quarks Electric Charge


Question: Is the universe immediately dependent upon the past?


Question: Conveyor scales modeling


Question: At what speed does our universe expand?


Question: I still don't understand how a gas with an equation of state f(T,p,V)=0 can change if 2 state functions are fixed?


Question: Black hole analog experiment?


Question: Why does a motor draw more current stopped or under load?


Question: If atoms have specific energy levels, why do opaque solids absorb all visible light, not just some?


Question: Why do cosmic bodies revolve?


Question: Does Bernoulli's principle hold in moving reference frames?


Question: How vacuous is intergalactic space?


Question: Why is matter drawn into a black hole condensed into a single point within the singularity?


Question: Why do we fall down when the bicycle slows down?


Question: As the earth rotates around itself, does this have any effect on the dynamics of flights?


Question: What happens to chemical compunds that include radioactive nuclei, when those decay?


Question: Help explain how direction change relates to acceleration


Question: Problem about entropy


Question: Why does the (relativistic) mass of an object increase when its speed approaches that of light?


Question: If time standard clocks and any memories about the time standard are destroyed, can we recover the time standard again?


Question: Mechanics around a rail tank wagon


Question: quantum mechanics and canonical conjugate


Question: How does the Hubble Redshift work?


Question: What is a field, really?


Question: What exactly is the 'observer' in physics and/or quantum mechanics?