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Joined: May 2002
I came across a new article on the evolution of photosynthesis; there are a number of articles on this topic, I will post them as I rediscover them, others may have come across interesting stuff also.
Reaction centres: the structure and evolution of biological solar power
Peter Heathcote b, Paul K. Fyf... | <urn:uuid:2a4fd164-68db-40ec-9124-edaff115a61f> | 2.78125 | 1,870 | Content Listing | Science & Tech. | 31.908367 |
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 July 3
Explanation: The closest star system to the Sun is the Alpha Centauri system. Of the three stars in the system, the dimmest -- called Pr... | <urn:uuid:0883f06e-fee5-4af4-815e-b42f2d8cf5dd> | 3.46875 | 281 | Knowledge Article | Science & Tech. | 49.562182 |
Simply begin typing or use the editing tools above to add to this article.
Once you are finished and click submit, your modifications will be sent to our editors for review.
photoreception and image formation
...Some water bugs (e.g., Notonecta, or back swimmers) use curved surfaces behind and within the lens to achiev... | <urn:uuid:e3c3ad10-e162-464e-9f78-748246c0435c> | 3.484375 | 146 | Truncated | Science & Tech. | 53.190714 |
Is it getting hot in here, or is it just us? Check out a few DVDs on global warming, and decide for yourself.
(DVD) QC981.8.G56 D5625 2006x
Examines studies showing that pollution is not only the cause of global warming but is also responsible for preventing sunlight from reaching the earth's surface, thereby masking t... | <urn:uuid:906e191a-7adc-4586-9543-46807736025b> | 2.796875 | 691 | Content Listing | Science & Tech. | 61.290982 |
The LHC (Large Hadron Collider) is scheduled to come online come August 2008 in Europe. For seven thousand scientists, it is finally show time after 10 years and 8 billion dollars. It might end the quest to find the Higgs boson aka the “God particle” because it gives mass to itself and all elementary sub atomic particl... | <urn:uuid:e533fa33-dc8c-4c88-8547-fbeda9b19c99> | 2.765625 | 731 | Comment Section | Science & Tech. | 42.916347 |
Since I am a mathematician, I give a precise answer to this question. Thanks to Kurt Gödel, we know that there are true mathematical statements that cannot be proved. But I want a little more than this. I want a statement that is true, unprovable, and simple enough to be understood by people who are not mathematicians.... | <urn:uuid:7410116a-0300-4717-9649-788a705bbca9> | 2.765625 | 538 | Comment Section | Science & Tech. | 59.744585 |
subduction zone, large-scaled narrow region in the earth's crust where, according to plate tectonics, masses of the spreading oceanic lithosphere bend downward into the earth along the leading edges of converging lithospheric plates where it slowly melts at about 400 mi (640 km) deep and becomes reabsorbed. Subduction ... | <urn:uuid:ddf1c3e4-bb3b-4ccd-b643-5ce170ccfa54> | 4.0625 | 379 | Knowledge Article | Science & Tech. | 46.969903 |
A glass rod is charged to +5.0 nC by rubbing. How many electrons have been added?
Do not want to provide additional optional info
Thank you for using Just Answer!
If the glass rod has gained a positive charge by rubbing then that means it has actually LOST electrons. The answer to your question is that it has not gaine... | <urn:uuid:606611d0-1223-4ab9-a980-49fb302093f7> | 2.875 | 172 | Q&A Forum | Science & Tech. | 77.465414 |
Joined: 16 Mar 2004
|Posted: Wed Sep 20, 2006 10:50 am Post subject: Researchers Use DNA to Direct Nanowire Assembly & Growth
|Brown University Researchers Use DNA to Direct Nanowire Assembly and Growth
The coding qualities of DNA have been harnessed by a research team from Brown University to create zinc oxide nanowir... | <urn:uuid:bb00aa15-83de-4019-9fcb-d3d87a93a47a> | 3.25 | 796 | Comment Section | Science & Tech. | 33.514514 |
The 10 frames, taken 32 seconds apart, show the formation and evolution of what are likely mid-level, convective water clouds. Such clouds are common near Mars' equator at this time of the Martian year. They have been observed by both of NASA's Mars Exploration Rovers, by satellites orbiting Mars, and by the Hubble Spa... | <urn:uuid:9d023f67-cdff-4e47-8416-88d1ae2a582e> | 4.0625 | 547 | Knowledge Article | Science & Tech. | 45.100306 |
Scientists Collect Information on Plant and Animal Species
Hundreds of species of rare and at-risk animals and plants — from wild hyacinth to peregrine falcons — inhabit Pennsylvania.
The Western Pennsylvania Conservancy’s scientists, through the Pennsylvania Natural Heritage Program (PNHP), have documented what and wh... | <urn:uuid:ef0d202f-b19b-45f9-a456-3c18038dc75e> | 3.84375 | 1,109 | Knowledge Article | Science & Tech. | 33.151554 |
Virtual Field Study
Graphing Data / Identifying Trends
When the data
for internal volume and shell thickness versus age was plotted, a trend in
both features was observed over time. A linear trend is defined
tendency for a pattern to change in one direction, the validity of which
is tested by fitting the line to the tr... | <urn:uuid:18c88915-c769-4b9b-8d27-c23ee4fbdd76> | 3.078125 | 254 | Knowledge Article | Science & Tech. | 57.24925 |
For the past week I've begun researching Geoexchange or the process of how Geothermal Heat Pumps work. A geothermal heat pump works by utilizing the earth as either a source or sink depending on the time of year. In the winter the area beneath what is called the freeze line is warm in comparison to the ambient temperat... | <urn:uuid:e899bbee-2181-4ad7-9f2f-8585392d73fa> | 3.1875 | 106 | Truncated | Science & Tech. | 55.419143 |
Editor's note: The Science Seat is a feature in which CNN Light Years sits down with movers and shakers from different areas of scientific exploration. This is the fifth installment.
Sarah Dodson-Robinson is an assistant professor in the astronomy department at the University of Texas at Austin. She is a member of the ... | <urn:uuid:49b04aa9-1246-460b-bc70-c36798b3c825> | 3.46875 | 1,315 | Audio Transcript | Science & Tech. | 52.415262 |
New research provides
a detailed explanation for a baffling effect
in which much larger-than-expected amounts of light passed
through a silver-coated quartz barrier with tiny openings: namely, a
periodic array of 150-nm holes up to 10 times smaller than the
wavelength of the light sent through. This unexpected experime... | <urn:uuid:57a1ece9-9ecc-412e-a37b-39d3676ed8ab> | 3.640625 | 732 | Knowledge Article | Science & Tech. | 45.014268 |
1. Glass Identification: From USA Forensic Science Service; 6 types of glass; defined in terms of their oxide content (i.e. Na, Fe, K, etc)
2. Ionosphere: Classification of radar returns from the ionosphere
3. Wine: Using chemical analysis determine the origin of wines
4. Robot Execution Failures: This dataset contains... | <urn:uuid:88468b61-3548-4046-8992-65f09bd055ec> | 2.6875 | 145 | Content Listing | Science & Tech. | 38.634313 |
First rainforests arose when plants solved plumbing problem
A team of scientists, including several from the Smithsonian Institution, discovered that leaves of flowering plants in the world's first rainforests had more veins per unit area than leaves ever had before. They suggest that this increased the amount of water... | <urn:uuid:52799fd7-33c8-4e3c-92f2-0a1413e623f8> | 4.40625 | 832 | Truncated | Science & Tech. | 38.387106 |
Science Express has just published a new study of (a virtual endocast from) the skull of (specimen LB1 of) Homo floresiensis. The abstract:
The brain of Homo floresiensis is assessed by comparing a virtual endocast from the type specimen (LB1) with endocasts from great apes, Homo erectus, Homo sapiens, a human pygmy, a... | <urn:uuid:db0023d5-bb3e-4f17-bbdc-6ca9f9b1003e> | 2.953125 | 724 | Comment Section | Science & Tech. | 38.656841 |
Can catastrophic events be tamed? Technology has done plenty to protect us, but much more remains to be done.
by Mohamed Gad-el-Hak
Predictions of the weather can warn us that we may need an umbrella, or that we should batten down and head for the cellar. A forecast can often help us stay drier and more comfortable. In... | <urn:uuid:ccbc94cc-5f48-40e2-ba4d-8b36ec19c778> | 3.375 | 2,202 | Academic Writing | Science & Tech. | 28.089009 |
1/3 of corals face extinction
July 10, 2008
Assessing the conservation status of corals from around the world using IUCN Red List Criteria, an international team of researchers found that 32.8 percent of reef-building corals are in categories with elevated risk of extinction. At greatest risk are corals in the Caribbea... | <urn:uuid:f45b32ed-a8a6-4afa-945c-7892a31f6da2> | 3.5 | 942 | Content Listing | Science & Tech. | 41.940387 |
Gravity and Mountains Measurements
I just read in "A Short History of Nearly Everthing", by
Bill Bryson, about the historic measurement, in eighteenth-century
Scotland, of the gravitational attraction of a mountain.
Suppose there is a large mountain next to a broad plain. I wonder how
difficult it would be to measure t... | <urn:uuid:153b2c64-4008-47c1-b96e-5ca8499fee2a> | 3.734375 | 478 | Personal Blog | Science & Tech. | 41.172252 |
Wind speeds usually mean the movement of air in an outside environment, but the speed of movement of air inside is also important in many cases, including weather forecasting, aircraft and maritime operations, construction and civil engineering. High wind speeds can cause unpleasant side effects, and strong winds often... | <urn:uuid:835b28b1-62dd-48af-a901-326af3cce032> | 4.09375 | 147 | Knowledge Article | Science & Tech. | 25.808936 |
Bill Gates gave a TED Talk last week about how if he could have just one wish it would be to get to zero carbon. Even with all of his understanding, passion and work on the issues of health, poverty, sanitation, disease and so many of the world's urgent and interrelated problems - his wish, if he only had one, would be... | <urn:uuid:78a8ee95-a4de-4581-a78a-221b00d04f43> | 2.953125 | 467 | Personal Blog | Science & Tech. | 40.865742 |
From Cartan Matrix to Root System
Yesterday, we showed that a Cartan matrix determines its root system up to isomorphism. That is, in principle if we have a collection of simple roots and the data about how each projects onto each other, that is enough to determine the root system itself. Today, we will show how to car... | <urn:uuid:c6d03fed-33dd-48f5-a357-bb376441a3f7> | 3.546875 | 1,197 | Personal Blog | Science & Tech. | 74.065062 |
The key idea expressed is that if a property p is provable for every object x of type T and S is a subtype of T, then p should be provable for every object y of type S as well. Since the principle must hold for every conceivable property, we can also say that “functions that use pointer or references to base classes mu... | <urn:uuid:edb092fc-fc88-4855-a559-ecf9c657cb9a> | 3.140625 | 1,176 | Personal Blog | Software Dev. | 60.597595 |
WHAT DO GLUONS DO, AND WHAT ARE THEY MADE OF?
Gluons transmit "color" force between quarks. To define these terms:
protons, neutrons, and other particles typically appearing in an atomic
nucleus are assumed to be made up of several particles called quarks. The
proton and neutron, for example, are each made up of three ... | <urn:uuid:a65953cd-5678-46c8-b7de-6802512e4734> | 3.8125 | 418 | Knowledge Article | Science & Tech. | 46.14807 |
The remarkable developments which have resulted in making photoelectric detection available for the whole spectrum extending from the extreme ultraviolet to the far infrared are discussed. In spite of these developments thermal detectors are still widely used and will continue to be used for sometime. The special uses ... | <urn:uuid:18b40458-378b-4fe4-bb1b-2dcc6e329005> | 2.890625 | 117 | Knowledge Article | Science & Tech. | 37.916848 |
This section shows you the gradient Paint on rounded corner rectangle.
A gradient is like a colored strip. It is created by specifying a color at one point and another color at another point. Then the colors will starts changes gradually from one to the other along a straight line between the two points.
To use a Gradi... | <urn:uuid:35be3e77-50bc-4bdf-a693-e08e8e3b64f1> | 3.578125 | 207 | Documentation | Software Dev. | 61.530021 |
Climate Numerology; January 2010; Scientific American Magazine; by David Biello; 2 Page(s)
Last December world leaders met in Copenhagen to add more hot air to the climate debate. That is because although the impacts humanity would like to avoid—fire, flood and drought, for starters—are pretty clear, the right strategy... | <urn:uuid:0319e174-e45a-4a5e-9704-0b866c1428c4> | 3.265625 | 204 | Truncated | Science & Tech. | 32.938336 |
The BioSystematic Database of World Diptera (BDWD) is a source of names and
information about those names and the taxa to which they apply. The BDWD is
a set of tools to aid users in finding information about flies. The two main
components of the BDWD are the Nomenclator and the Species database.
The Nomenclator allows... | <urn:uuid:3f344203-9516-4d48-99d7-43e0f27ec9af> | 2.75 | 475 | Knowledge Article | Science & Tech. | 30.927159 |
|COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring.|
How do we model global plant physiology? A case study of leaf phenology
If you have a question about this talk, please contact Microsoft Research Cambridge Talks Admins.
This event may be rec... | <urn:uuid:9f396ec7-0ced-4033-94d1-678db411be34> | 2.765625 | 391 | Content Listing | Science & Tech. | 26.441669 |
1. Cosmic Evolution
This animation illustrates a billion or more years of cosmic evolution, from the hot Big Bang to the formation of galaxies and clusters of galaxies. The time sequence is not to scale. The beginning
of the animation covers a few minutes of cosmic evolution, whereas the later portions cover billions o... | <urn:uuid:1c6147a9-ac4b-4ba2-b9ba-b2b0220eba25> | 2.703125 | 63 | Truncated | Science & Tech. | 42.136932 |
Find information on common issues.
Ask questions and find answers from other users.
Suggest a new site feature or improvement.
Check on status of your tickets.
In nanotechnology, a particle is defined as a small object that behaves as a whole unit in terms of its transport and properties. It is further classified accor... | <urn:uuid:f23ac25e-1ad8-4273-89d0-e614557a9e9f> | 2.828125 | 347 | Content Listing | Science & Tech. | 34.267211 |
Dec. 9, 2008 The world's most precise clock - on which all time-keeping and navigation systems are based - might be made as small as a wristwatch with a new design proposed by an international team of physicists.
Cesium atomic clocks are presently used to define the basic unit of time - the second - to co-ordinate and ... | <urn:uuid:41841e23-3a60-4b8a-8e11-90516c4dc1db> | 3.671875 | 310 | Truncated | Science & Tech. | 31.060047 |
XRD - X-Ray Diffraction
Powder x-ray diffraction (XRD) uses x-rays to investigate and quantify the crystalline nature of materials by measuring the diffraction of x-rays from the planes of atoms within the material. It is sensitive to both the type of and relative position of atoms in the material as well as the length... | <urn:uuid:dacf44bd-cb0e-451f-8a19-cae187810c4b> | 3.046875 | 525 | Knowledge Article | Science & Tech. | 32.701416 |
Using static variables for Strings
When you define static fields (also called class fields) of type String, you can increase application speed by using static variables (not final) instead of constants (final). The opposite is true for primitive data types, such as int.
For example, you might create a String object as ... | <urn:uuid:38496616-dc5c-4265-a169-99235d13a9ef> | 3.3125 | 218 | Documentation | Software Dev. | 41.91 |
MathTools || All Problems of the Week
Print This Problem
211: Types of Triangles
Open the sketch triangletypes.gsp or view the JavaSketchpad applet. Drag the vertices of each of the four triangles (red, blue, green, purple). Record what you notice about the angles and the lengths of the sides of each of the triangles. ... | <urn:uuid:e1e9cabe-6a60-4645-8d1d-b486ef9244b6> | 3.296875 | 390 | Tutorial | Science & Tech. | 61.627189 |
Learn more physics!
WHAT IS THE TYPICAL MAGNETIC FIELD PREDICTED FOR THE SURFACE OF A NEUTRON STAR?
- JENNIFER IGLESIAS (age 18)
KILLEEN HIGH SCHOOL, KILLEEN, TX, BELL
Neutron stars have the strongest magnetic fields of any stars
known. Relatively weak ones have magnetic fields strengths of about
10^8 G and strong ones... | <urn:uuid:5b5ad96a-56b8-4803-9b12-703992b7d6ed> | 3.375 | 211 | Q&A Forum | Science & Tech. | 73.047817 |
New images of Planet Mercury
A perspective view of the immense volcanic plains that span Mercury’s northern latitudes, from Messenger spacecraft, colorized by the topographic height of the surface. The purple colors are the lowest and white is the highest.
A mosaic photograph of Planet Mercury, from images taken from t... | <urn:uuid:d8ae75c0-d10f-40c8-b509-55eece60475d> | 2.984375 | 178 | Truncated | Science & Tech. | 37.90847 |
Global Warming Science - www.appinsys.com/GlobalWarming
[last update: 2011/05/21]
The following figures compare the annual average temperature anomaly data for the Arctic for NOAA GHCN (unadjusted) and Hadley CRUTEM3 (adjusted and averaged over 5x5 degree grids) through 2010. All stations or grids north of 65N with dat... | <urn:uuid:e9164102-07e5-4f41-a872-bb3491dc87db> | 3.078125 | 1,536 | Knowledge Article | Science & Tech. | 51.054124 |
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Identifying a Monophyletic Group
Phylogeneticists use phylogenies to isolate monophyletic groups or groups composed of an ancestor and all of its descendants. These groups are a... | <urn:uuid:afde31c9-e5e3-4761-ba31-6d5dfc5633be> | 3.65625 | 566 | Truncated | Science & Tech. | 39.463146 |
In the early 1960's using a simple system of equations to model convection in the atmosphere, Edward Lorenz, an MIT meteorologist, ran headlong into "sensitivity to initial conditions". In the process he sketched the outlines of one of the first recognized chaotic attractors.
In Lorenz's meteorological computer modelin... | <urn:uuid:15f57fdd-63ed-4729-ae25-a15ed450d2a2> | 4.03125 | 276 | Knowledge Article | Science & Tech. | 24.629027 |
Get flash to fully experience Pearltrees
After explaining what a normal climate is, Heidi Cullen asks whether there actually is a normal climate at all, given that each of the past three decades has been hotter than the previous one, with 2000-2009 being the hottest on record. But nevertheless, she goes on to refer to ... | <urn:uuid:dcae8f75-ee6c-48f9-b2ad-75b4b007cc72> | 2.96875 | 270 | Personal Blog | Science & Tech. | 62.068233 |
Oil is no longer cheap, however, and it’s certainly not limitless. We have entered what Hampshire College professor Michael Klare calls the “age of tough oil,” in which the easily extractable deposits have been depleted, sending us drilling for oil miles beneath the surface of the ocean. Meanwhile, the growing Indian a... | <urn:uuid:e1aef0d6-a2ca-4b4d-9bb3-e8332b31fa6a> | 2.78125 | 1,749 | Truncated | Science & Tech. | 42.815259 |
Results: MIT researchers have developed designs for a new kind of coal-burning power plant, called a pressurized oxy-fuel combustion system, whose carbon-dioxide emissions are concentrated and pressurized so that they can be injected into deep geological formations. This system is a way to reduce the energy penalty tha... | <urn:uuid:94d16a86-9189-40c3-ae03-b8791bce3d02> | 4.0625 | 342 | Knowledge Article | Science & Tech. | 24.72283 |
The Large Magellanic Cloud, an irregular galaxy.
Click on image for full size
© Loke Kun Tan (StarryScapes)
A Matter of Scale - interactive showing the sizes of things, from very tiny to huge - from NSF
Any galaxy which does not look like an elliptical or spiral is called
an irregular galaxy. Every irregular galaxy is ... | <urn:uuid:ded0d950-42e6-45a0-8843-3f59ba5b3c09> | 3.75 | 659 | Content Listing | Science & Tech. | 64.889491 |
Evolution is change over time. Under this broad definition, evolution can refer to a variety of changes that occur over time—the uplifting of mountains, the wandering of riverbeds, or the creation of new species. To understand the history of life on Earth though, we need to be more specific about what kinds of changes ... | <urn:uuid:57b4e358-c275-48cf-b06f-4e3475525159> | 3.84375 | 443 | Knowledge Article | Science & Tech. | 30.611935 |
Dolphins that hunt using sponges as tools prefer to spend time with other… (Eric M. Patterson )
Scientists have discovered that bottlenose dolphins have something in common with junior high school girls: They like to hang out in cliques. The researchers found that dolphins that wear sea sponges on their beaks as huntin... | <urn:uuid:c242b39d-f71b-4fd1-90ce-307659806b9a> | 3.46875 | 579 | Truncated | Science & Tech. | 37.767414 |
As I mentioned in my last post, one of the ways we are helping our teams get a better understanding of the wild and wacky world of the Web and Web developers is via a glossary we’ve created. In compiling this I pulled information from various and sundry sources across the Web including wikipedia, community and company ... | <urn:uuid:f70643dc-633e-4cfb-9c65-fa4c81ba4373> | 2.765625 | 1,428 | Personal Blog | Software Dev. | 44.622858 |
[Graphitemaster] is helping to demystifying the process of tailoring functions for dynamic loading. His tutorial shows how make a dynamic function that prints “Hello World” to the standard output. This is of course rudimentary, but if you have no prior experience with the topic you might be surprised at what actually g... | <urn:uuid:bddee612-2491-484a-95f6-f05442e280dd> | 2.765625 | 192 | Tutorial | Software Dev. | 51.292726 |
* Japanese name: Tobihaze
* Scientific name:Periophthalmus sp.
* Description: Mudskippers are fish with eyes on the top of the head (not at the sides like in most other fish) and with front (pectoral) fins that are more like legs than fins. They are olive-brown in color, have sharp teeth and large mouths, and grow up t... | <urn:uuid:c43a0e6b-59bf-4ba1-bde4-8e41f04e5316> | 3.140625 | 488 | Knowledge Article | Science & Tech. | 53.06051 |
Rotifer occurrence in relation to water temperature in Loch Leven, Scotland
May, L.. 1983 Rotifer occurrence in relation to water temperature in Loch Leven, Scotland. Hydrobiologia, 104 (1). 311-315. 10.1007/BF00045983Full text not available from this repository.
Many rotifer species in Loch Leven show a distinct seaso... | <urn:uuid:6e204f18-abdf-47b4-8c43-03823be95ec5> | 2.8125 | 234 | Academic Writing | Science & Tech. | 25.824545 |
Mission Type: Orbiter
Launch Vehicle: Delta 1913 (no. 95 / Thor no. 581)
Launch Site: Eastern Test Range / launch complex 17B, Cape Canaveral, USA
NASA Center: Goddard Space Flight Center
Spacecraft Mass: about 330 kg at launch, 200 kg in lunar orbit (after solid braking motor was ejected)
Spacecraft Instruments: 1) ga... | <urn:uuid:4cf71ff5-298f-4af2-9760-8b30df35c99b> | 3.4375 | 539 | Knowledge Article | Science & Tech. | 55.025486 |
2.5 Body lengths per
second. Rough Terrain. Here, the servos at the hips of a tripod of
legs are made to swing as the pistons are extended.
An impressive 2.5 body lengths per second is achieved and fairly
robust performance over obstacles that are the same height as the
"stomach" clearance is obtained.
This is mainly a... | <urn:uuid:33e18098-20d3-40b0-a33a-57c53e6872d7> | 2.828125 | 283 | Truncated | Science & Tech. | 62.29955 |
PF's XAML language defines the controls that make up a user interface. Typically, some kind of container control such as a Grid or StackPanel fills the window. In turn, that container holds other controls, such as Labels, TextBoxes, Buttons, Sliders, and so forth.
Your XAML code defines the user interface's structure a... | <urn:uuid:94e36c34-480d-4fc3-bc94-2ffdd9091cf3> | 4 | 530 | Tutorial | Software Dev. | 57.982249 |
Book Summary - Eaarth: Making a Life on a Tough New Planet
This is a substantive summary of Bill McKibben's book Eaarth: Making a Life on a Tough New Planet. McKibben argues that we have underestimated the pace and impact of climate change, and as a result we now inhabit a planet that has been irrevocably changed. The ... | <urn:uuid:16a2afff-fd19-4c76-97cb-718945775289> | 2.953125 | 158 | Truncated | Science & Tech. | 33.535248 |
C and C++ books-page13 Posted on: October 7, 2010 at 12:00 AM
This book was motivated by my experience in teaching the course E&CE 250: Algorithms and Data Structures in the Computer Engineering program at the University of Waterloo.
C and C++ books-page13
Data Structures and Algorithms with Object-Oriented Design Patt... | <urn:uuid:e33d7d88-0b99-4d39-af82-a6400b4c4508> | 2.78125 | 898 | Content Listing | Software Dev. | 38.518548 |
The clash of water sloshing in from the Atlantic and the Mediterranean that will reach up into the Alps at Switzerland is due to many factors, as we have explained.
We have described the direction of slosh during the pole shift, where France and Spain will be rushing toward the northwest during the crustal shift, thus ... | <urn:uuid:37db3e41-44c8-45c5-a3c3-2523ff254d43> | 3.140625 | 515 | Personal Blog | Science & Tech. | 50.356442 |
The thing in the photo above, I’m sad to say, is a penis. It belongs to the male seed beetle. And just in case you’re holding out hope that appearances are deceiving, I can assure you they are not. Those spikes are hard and sharp, and they inflict heavy injuries upon the female beetles during sex. Why would such a hell... | <urn:uuid:5094145e-dc9d-41f2-bf48-2468c365ab19> | 3.09375 | 2,145 | Personal Blog | Science & Tech. | 55.666431 |
Would you like to make this site your homepage? It's fast and easy...
Yes, Please make this my home page!
PLAN OF DC GENERAL RELATIVITY
dca foundations of general relativity
dcb derivation of general relativity steps 1 and 2
dcc the centrifugal model step 3
dcd the centripetal model step 4
BACK TO SITE PLAN
Site Plan :... | <urn:uuid:9215b49c-6e84-4d1b-b5bb-3a9599f6f13b> | 3.390625 | 3,028 | Documentation | Science & Tech. | 43.991677 |
Math 416 - Abstract Algebra
Chapter 5 - Permutations
The following questions are based on sample questions from the "Instructors' Solutions Manual.
1. Find the order of the permutation (124)(2345)
2. Give two reasons why the set of odd permutations in Sn is not a subgroup.
3. a. Write (12345) as a product of 2-cycles
b... | <urn:uuid:9a0bdcd7-ad95-4f68-9812-f99df276c3c1> | 3.0625 | 394 | Tutorial | Science & Tech. | 95.609785 |
Jim Thomson is principal oceanographer at the Applied Physics Lab at the University of Washington. He studies ocean surface waves and coastal processes.
Wednesday, Oct. 1
44.00 degrees north latitude, 134.84 degrees west longitude
The experience of an ocean transit has some similarities to driving across the continenta... | <urn:uuid:ae6e7b13-5b06-4192-a66f-057d829e120c> | 2.78125 | 568 | Personal Blog | Science & Tech. | 68.633368 |
Last year's record loss of Arctic sea ice is already causing big changes for plants and animals that scientists are just starting to understand, according to newly published research.
(3 months and 6 days ago)
Massive snow storms in the northern hemisphere are linked to shrinking Arctic sea ice levels, scientists say.
... | <urn:uuid:5e1a6fac-25ff-4e90-957d-f819fd7e208e> | 3.5 | 565 | Content Listing | Science & Tech. | 51.932282 |
There are four mathematical properties which involve addition. The properties are
the commutative, associative, additive identity and distributive properties.
Commutative property: When two numbers are added, the sum is the same
regardless of the order of the addends. For example 4 + 2 = 2 + 4
Associative Property: Whe... | <urn:uuid:49cee08f-882d-4cd8-a47c-eb8a1150228f> | 4.34375 | 185 | Knowledge Article | Science & Tech. | 49.674355 |
Science Fair Project Encyclopedia
Planck's constant, denoted h, is a physical constant that is used to describe the sizes of quanta. It plays a central role in the theory of quantum mechanics, and is named after Max Planck, one of the founders of quantum theory. It has a value of approximately
A closely-related quantit... | <urn:uuid:ba7a9dd7-ced9-45a7-b078-087c137c2c5e> | 3.734375 | 511 | Knowledge Article | Science & Tech. | 30.522292 |
Richard Newcombe looks at how to interact with objects in the 3D world, using a card game as a base. This article only covers the basics, but by the end of the article you will be able to interact with objects in a 3D world using the mouse.
Articles Written by Richard Newcombe
Richard Newcombe takes us into the basics ... | <urn:uuid:10d3a2a2-4d01-4ff2-805f-df7c58aae3f6> | 2.734375 | 300 | Content Listing | Software Dev. | 59.613088 |
HomeOracle Page 5 - Database Interaction with PL/SQL, Named Notations, Storing Procedures and Functions
PACKAGE and PACKAGE BODY - Oracle
This is part 16 of a series of articles focusing on database interactions with Oracle PL/SQL. In my previous article, we worked with PL/SQL TABLE types in between sub-programs. In th... | <urn:uuid:4cb535a5-e8af-44f2-bd52-2dbe57b3c73c> | 3.03125 | 425 | Documentation | Software Dev. | 23.607555 |
Construct an Equilateral Triangle in the Hyperbolic Disk
Using the tools in the toolbar the below, construct an equilateral triangle with AB as one of its sides.
You should have already completed the midpoint problem, so that you are familiar with how to use the tools. Try moving the points A and B around to get a bett... | <urn:uuid:ca4592dd-0025-40c0-b0f5-330b50cfd03c> | 2.765625 | 105 | Tutorial | Science & Tech. | 52.12316 |
Pre-Thunder Electrical "Zap
This question refers to David R. Cook's explanation of
thunder. (Please refer to question #170 of the weather category archives,
titled: "Making Thunder Clouds"
http://www.newton.dep.anl.gov/askasci/wea00/wea00170.htm ). Several
times, I have been so close to a lightning strike that I heard ... | <urn:uuid:97cbc1be-08d9-40cd-b267-76614c58a836> | 2.875 | 1,012 | Q&A Forum | Science & Tech. | 54.240835 |
Displaying 1-3 of 3 key documents
Source: Global Canopy Programme | December 2008
This policy brief, published by the Global Canopy Programme, proposes a system called Proactive Investment in Natural Capital (PINC), to reward countries for conserving large areas of tropical forest that act as 'global utilities' providi... | <urn:uuid:d5b2144e-8c5f-4020-8bb9-9eac3fbff9ea> | 3.078125 | 561 | Content Listing | Science & Tech. | 22.417138 |
What mom doesn't get stressed out every now and then? Stress is usually considered a bad thing, but new research suggests that mom's stress can actually give her future offspring certain physical advantages, at least in the case of one bird species.
A few years ago, experiments on barn swallows demonstrated that when o... | <urn:uuid:73a46a08-d7c6-4056-ab94-f01092fef1a6> | 3.109375 | 1,557 | Content Listing | Science & Tech. | 62.671552 |
- Special Sections
- Public Notices
Scientists have discovered another earth. Well, sort of.
Earlier this month, NASA’s Kepler space telescope team announced the discovery of Kepler-22b located in what is called a “habitable zone,” meaning an environment that’s not too hot or too cold for the possibility of life. And j... | <urn:uuid:34fc8f0b-8aea-4a9a-bb57-de129e77853a> | 3.125 | 198 | Truncated | Science & Tech. | 48.63283 |
The Weather Modification Roller Coaster
In 1960, Simpson was a full Professor at the University of California Los Angeles, where she designed and taught graduate classes, and wrote two books. She also “computerized” her cloud model and began looking for ways to test it. Simpson realized that cloud seeding experiments w... | <urn:uuid:ed54ceea-8f6b-4278-8727-8f959e99a872> | 3.125 | 1,138 | Knowledge Article | Science & Tech. | 37.160677 |
This image represents an expanding Universe. The arrows show that the movement is outward from the center. The spirals represent galaxies.
Hubble Flow: The Expanding Universe
In the 1920's the famous American astronomer Edwin Hubble made an amazing discovery. He found that, no matter which direction he looked into spac... | <urn:uuid:5b02748e-0002-4594-a652-6f4f1d78dbec> | 3.671875 | 574 | Content Listing | Science & Tech. | 65.634822 |
Sea level rise is a topic that we frequently focus on because of all the gross environmental alterations which may result from anthropogenic greenhouse gas emissions, it is perhaps the only one which could lead to conditions unexperienced by modern societies. A swift (or accelerating) sea level rise sustained for multi... | <urn:uuid:9f26bb1b-bf64-48cc-b3f1-bc940673b55c> | 3.296875 | 2,365 | Content Listing | Science & Tech. | 49.670298 |
06 Oct 2003
This article provides some basic code to set up forms authentication within your web.
Tested: ASP.NET 1.0
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Have you ever wondered how sites authenticate users using forms? This article will explain how to by using ASP.Net and SQL 2000.
First... | <urn:uuid:12174fe4-1f02-4de6-a2dc-6cce9b5f0286> | 3.03125 | 2,487 | Comment Section | Software Dev. | 68.340321 |
As explained in an earlier post (which you may be interested in reading as a bit of background to this one), the earlier part of the Caenozoic (the current era of the earth's history) was home to a number of mammalian lineages of very mysterious relationships. Very few of the familiar orders around us today had yet put... | <urn:uuid:a9d01169-f9c6-48b5-abd7-df9c7533e75b> | 3.140625 | 2,376 | Comment Section | Science & Tech. | 40.929803 |
Most extreme January - June period on record
NOAA’s U.S. Climate Extremes Index (CEI), which tracks the percentage area of the contiguous U.S. experiencing top-10% and bottom-10% extremes in temperature, precipitation, and drought, was 44% during the year-to-date January - June period. This is the highest value since C... | <urn:uuid:495a25ec-90aa-4c27-8969-387033c148d9> | 2.96875 | 194 | Knowledge Article | Science & Tech. | 67.950462 |
As temperatures in southwestern North America increase 3 to 5°C over the next 60 to 90 years, rapidly colonizing species should increase, while slow colonizing species will at first decrease, eventually becoming re-established in their new range. Using long-term plots, this successional process has been estimated to re... | <urn:uuid:6af9f757-bca5-4882-b094-c89882ffb983> | 3.265625 | 346 | Academic Writing | Science & Tech. | 23.012729 |
Type.GetType Method (String, Boolean, Boolean)
Gets the Type with the specified name, specifying whether to perform a case-sensitive search and whether to throw an exception if an error occurs while loading the Type.
[Visual Basic] Overloads Public Shared Function GetType( _ ByVal typeName As String, _ ByVal throwOnErr... | <urn:uuid:e68e4f86-c65e-4db9-8cea-08d000336407> | 2.765625 | 1,790 | Documentation | Software Dev. | 32.169809 |
Prove that if n is a triangular number then 8n+1 is a square number. Prove, conversely, that if 8n+1 is a square number then n is a triangular number.
Robert noticed some interesting patterns when he highlighted square
numbers in a spreadsheet. Can you prove that the patterns will
Which numbers can we write as a sum of... | <urn:uuid:833470dd-5951-4897-826a-b3bc27b88884> | 2.96875 | 343 | Content Listing | Science & Tech. | 71.107471 |
Web-based Resources for Teaching the Ocean System
This is a general collection of web sites that relate to
teaching oceanography at the undergraduate level. Please let us know
about your favorite oceanographic web
Refine the Results
Results 11 - 20 of 378 matches
Turbidity Current Movies part of SERC Web Resource Colle... | <urn:uuid:b0b1ca25-cfa3-4285-b359-9a4903d6e7f5> | 2.953125 | 524 | Content Listing | Science & Tech. | 33.607173 |
(a) The uncertainty region for the vacuum state is a circle centered at the origin.
(b) The coherent state exhibits a circular uncertainty region centered about the rotating phasor. Points (x, p) in the uncertainty circle trace out an electric field with an uncertainty that is independent of time.
(c) The squeezed-vacu... | <urn:uuid:bed74abb-0cb6-4583-9374-bec577474ca9> | 3.140625 | 204 | Academic Writing | Science & Tech. | 49.169118 |
Tip-tilt mirrorA tip-tilt mirror is a rapidly moving mirror that can make small rotations around its two axis.
They are used in last-generation telescopes, to correct the aberration introduced by the atmosphere on the light path and improve image quality over what would be possible according to the night seeing.
A sign... | <urn:uuid:db32aa47-a01d-4e56-8efc-22980aeb427b> | 3.390625 | 137 | Knowledge Article | Science & Tech. | 33.045632 |
A model is a representation of a set of information constructs. A familiar model is the relational model, which defines tables composed of columns and containing records of data. Another familiar model is the XML model, which defines hierarchical data sets.
In Teiid, models are used to define the entities, and relation... | <urn:uuid:b57d8f00-7f8d-4085-a3ed-eea7ebacddf3> | 3.15625 | 924 | Documentation | Software Dev. | 37.526062 |
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
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Thank you,I read the article(there cannot be a parabola with my equation,right?).
Yes, I worked that out. No problem and no harm done.
Sorry,bob... | <urn:uuid:6b461934-cf50-41b2-8514-6dcad8fe8b1f> | 2.796875 | 258 | Comment Section | Science & Tech. | 69.201663 |
AFTER carefully studying the faint microwave echo of the big bang, three teams of astrophysicists say that our Universe really did start out much smaller than an atom and then expanded faster than light, exploding in size during its first fraction of a second in existence. It's the best evidence yet for what's called "... | <urn:uuid:cf2635f0-98af-4097-aaee-d09ecf4e8550> | 3.328125 | 210 | Truncated | Science & Tech. | 42.699564 |
ORCAS: Researchers designing new ultra-sensitive hydrophones -- underwater microphones -- looked to a creature known for its keen sense of hearing in the underwater world, the killer whale.
Mother Nature Network reports that Stanford University's Onur Kilic and colleagues analyzed orca ears, which are perfectly constru... | <urn:uuid:5e1a9baf-79e0-46d8-9657-612d4ed264e3> | 3.046875 | 774 | Content Listing | Science & Tech. | 40.437791 |
- Jan 31, 2003
Finding a Minimum with MIN()
Use the aggregate function MIN() to find the minimum of a set of values.
To find the minimum of a set of values:
expr is a column name, literal, or expression. The result has the same data type as expr.
Listing 6.1 and Figure 6.1 show some queries that involve MIN(). The firs... | <urn:uuid:3778459d-0391-48f7-a79e-17f765f4d405> | 3.5 | 369 | Documentation | Software Dev. | 65.466719 |
August 1, 2007 Scientists gives us a sneak peek into the world of wave pools, and explain how these huge pools make constant waves. Waves are made by a huge compressor that feeds four gigantic air blowers. Then a computer controls chambers that generate the waves. When the chamber lids are closed, air from the blowers ... | <urn:uuid:24e99c09-c52a-434b-a4a4-b7f3e756105f> | 3.1875 | 1,058 | Truncated | Science & Tech. | 56.905535 |
Snow Leopard Ecology
Understanding snow leopard ecology is a key building block for successful conservation programs. In order to protect the snow leopards, we must first identify the resources they use within the landscape and how they interact with each other and other wildlife.
The Snow Leopard Trust conducts ground... | <urn:uuid:accd89c3-5ec4-4a13-bc1b-2784f9e93cc4> | 3.796875 | 459 | Knowledge Article | Science & Tech. | 43.422622 |
|God created the integers.
All else is the work of man.
The problem with knowledge is that you have to start somewhere. Once you know something, you can start deducing other things. But how do you know the first thing?
Descartes’s famous solution was “I think, therefore I am”. I have direct knowledge of my own thoughts... | <urn:uuid:a7a4a69e-9af7-4935-8f8b-bbcafe8c4b8f> | 3.0625 | 1,374 | Personal Blog | Science & Tech. | 50.327071 |
1721 Balsam Carpet Xanthorhoe biriviata
(Borkhausen, 1794)Wingspan c. 28 mm.
A species of damp woodland, occurring in fens, along canals and similar habitats. It is distributed locally in the south and south-east of England, and was first noted in the 1950s.
The main larval foodplant is orange balsam (Impatiens capensi... | <urn:uuid:3bc2691a-008f-4883-bdf9-887b152597e9> | 3.0625 | 146 | Knowledge Article | Science & Tech. | 58.456598 |
Peregrine Falcons and DDT
Understanding "Bio-accumulation" of Toxins in the Environment
Even the youngest students that we talk to in the third and fourth grade seem to understand what it means to be listed as "endangered" and that the peregrine falcon and bald eagle were added to the endangered species list largely be... | <urn:uuid:4dced0e8-f651-4e45-a88f-beb392a39ee2> | 3.75 | 1,144 | Knowledge Article | Science & Tech. | 69.515469 |
Sometimes in science, the answer you end up with is not exactly the question you started with. The path to discovery is not always predictable. Researchers have to constantly evaluate what they are finding, and be ready to adjust their course when the data leads down a different path. This is especially true in tropica... | <urn:uuid:b9840a30-a682-4d93-9a3b-b015ad6621dc> | 3.6875 | 1,406 | Personal Blog | Science & Tech. | 45.954944 |
The effect shown in the gif is called gravitational lensing.
What is gravitational lensing?
Gravitational lensing is the effect seen when an object behind a massive object is in the line of sight with the earth. For example:
Earth ————>Massive Object—————->Far away object
When we try looking at the far away object, the... | <urn:uuid:75907129-7650-4059-9a6a-4847778e9436> | 3.578125 | 151 | Knowledge Article | Science & Tech. | 49.219096 |
A string conversion is an expression list enclosed in reverse (a.k.a. backward) quotes:
string_conversion: "`" expression_list "`"
A string conversion evaluates the contained expression list and converts the resulting object into a string according to rules specific to its type.
If the object is a string, a number, Non... | <urn:uuid:27ea6199-72a5-4cad-b1bc-1854ad6d0f3a> | 3.46875 | 233 | Documentation | Software Dev. | 41.647533 |
[erlang-questions] Comma, semicolon. Aaaaa (Emmanuel Okyere)
Mon Sep 17 04:00:33 CEST 2007
On 16 Sep 2007, at 15:19, Ahmed Ali wrote:
> I'll try to give you my view on the syntax. The comma (,) is like
> (;) in
> languages like Java/C. Each method is ended with a Dot (.). If you
> have more
> than one method with the s... | <urn:uuid:9efcf2db-82ce-4eae-80e4-0537a5e94163> | 2.78125 | 285 | Comment Section | Software Dev. | 69.479007 |
For a short time today -- too short to get a decent picture -- the sky over Minnesota was wearing a pinstripe suit, thanks to the weather conditions that made obvious what is true all the time -- there's a highway over us.
Jet contrails only form to this degree in certain weather conditions.
Let's turn it over to Dr. S... | <urn:uuid:be919ee4-4597-4ad7-abe3-187330d2c88c> | 3.734375 | 1,263 | Comment Section | Science & Tech. | 53.201346 |
The equatorial Atlantic is a complex region dominated by the presence of large scale westward currents and eastward counter currents. Some of the more extensive studies of this region include GARP (Global Atmospheric Research Program) Atlantic Tropical Experiment (GATE), the First GARP Global Experiment (FGGE), the Sea... | <urn:uuid:a1b3d219-5d2d-4267-b851-9e4ff269b537> | 3.84375 | 1,725 | Academic Writing | Science & Tech. | 60.617668 |