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Hello there! This is my first tutorial, and I hope you enjoy it!
Lets start with the sections shall we? Here is a basic example of what the starting layout of the HTML should look like (The spaces between the sections represent were to put information).
<html> <head> </head> <body> </body> </html>
See? Looks simple rig... | <urn:uuid:a02414af-17b0-4cd9-aa83-90eadb99b8ab> | 3.40625 | 621 | Comment Section | Software Dev. | 83.245068 |
First of all, a Gcal resource file is a plain ascii text file. This text file may be created by any text editor or by redirecting the standard output channel to a file, e.g.:
|$ echo '19930217 Text'>> resource-file <RET>|
A special —but simple— line structure is required so Gcal is able to interpret its contents. Each ... | <urn:uuid:880cd09f-7a1d-4bc0-b443-c3131b79ce9e> | 3.171875 | 572 | Documentation | Software Dev. | 55.010011 |
Enteromorpha: now Ulva
See Eur. J. Phycol. (August 2003) 38: 277-294. Linnaeus was right all along: Ulva and Enteromorpha are not distinct species.
When Enteromorpha first begins growing, it
forms a single row of cells, this structure is monosiphonous. Soon
after the monosiphonous filament is formed, longitudinal divis... | <urn:uuid:cd032175-fb73-49ee-bf2e-e8afea14a4b2> | 3.015625 | 598 | Knowledge Article | Science & Tech. | 44.474653 |
In the Land of Giant Frogs
Scientists strive to keep the world's largest aquatic frog off a growing global list of fleeting amphibians
FOR THREE DECADES, pictures of a lake monster living high in the Andes Mountains have haunted me. When Jacques Cousteau mounted an expedition in 1973 to explore Bolivia and Peru’s Lake ... | <urn:uuid:35c54518-1b46-466f-96d8-e3b293fa17e3> | 3.25 | 2,518 | Nonfiction Writing | Science & Tech. | 38.387158 |
How does propulsion work?
To calculate the specific impulse, we first need to calculate the exhaust velocity. Since the real exhaust velocity is exceeding complex to calculate, we will be using some simplifying assumptions to make a simpler equation. Assume that the exhaust velocity follows the following formula:
Ve2 =... | <urn:uuid:ed0cb7d1-5ab1-417a-935e-52f04c55480c> | 3.703125 | 566 | Tutorial | Science & Tech. | 57.911971 |
The photosphere is the visible "surface" of the Sun (left). Sunspots are often visible "on" the photosphere. A close-up view (right) shows the granulation pattern on the photosphere.
Click on image for full size
Images courtesy of SOHO/NASA/ESA and The Royal Swedish Academy of Sciences and Oddbjorn Engvold, Jun Elin Wi... | <urn:uuid:971b8d6f-2311-4ae4-8fc2-3c6747cb8c1e> | 3.828125 | 757 | Knowledge Article | Science & Tech. | 57.656899 |
A plasma of hydrogen ions is trapped in a tokamak by balancing the pressure gradient and magnetic forces.
The equation of motion of a plasma is described by magnetohydrodynamics
ρ(dv/dt)= jxB - grad p
where ρ is the plasma density
is the velocity
of the plasma fluid
is the plasma current, B
is the magnetic field and p
... | <urn:uuid:d448d9fc-e5c1-4a7c-ad41-78cd7a103280> | 4.125 | 335 | Knowledge Article | Science & Tech. | 49.446261 |
14.2. The CORBA Architecture
, the CORBA architecture for distributed objects shares many features with the architecture used by Java RMI. A description of a remote object is used to generate a client stub interface and a server skeleton interface for the object. A client application invokes
on a remote object using th... | <urn:uuid:eaf2af0f-53bb-4fe2-97c2-3f688b22e4fe> | 3.234375 | 1,766 | Documentation | Software Dev. | 39.975881 |
Asymmetric Chemistry and Sugar Synthesis
Professor David MacMillan
Professor of Chemistry, California Institute of Technology
The chemistry of life relies heavily on special molecules that are ideally suited for their various roles. Part of this design often involves an asymmetric design that enables their activity. Ho... | <urn:uuid:eb1bfd64-9a1c-4935-9afa-66c10a402708> | 3.0625 | 3,438 | Audio Transcript | Science & Tech. | 34.0106 |
Calico Scallop Dissected
Like other bivalves, the two valves, or shells, of the calico
scallop are secreted by the thin tissue called the mantle. These
valves are joined at the hinge by a ligament, and connected by a
cylindrical muscle. By contracting this muscle, the scallop can
open and close the two shells.
Calico s... | <urn:uuid:4bafd1e0-8d13-4d44-ab59-00109eb76e86> | 3.09375 | 133 | Knowledge Article | Science & Tech. | 35.432902 |
How Best to "Weatherproof" Earth's Corals Against Warming-Induced Bleaching
Wooldridge, S.A. and Done, T.J. 2009. Improved water quality can ameliorate effects of climate change on corals. Ecological Applications 19: 1492-1499.
In a study that addresses such concerns, Wooldridge (2009a) developed an hypothesis that sug... | <urn:uuid:947e5554-1a10-4371-b824-3fb14fffc08c> | 3.234375 | 705 | Academic Writing | Science & Tech. | 53.169237 |
There are essentially 5 states of matter:
Plasma is actually the most abundant state of matter in the universe, because it is the state that exists inside stars that are undergoing nuclear fusion. Ball lightning is an example of plasma that manifests on the Earth.
Phase TransitionsSubstances can go through a number of ... | <urn:uuid:7b828ff5-9218-49cd-81c9-5cb1f9db3fd0> | 3.59375 | 615 | Knowledge Article | Science & Tech. | 27.98504 |
As noted in A doubt about the age of the universe, the wiki about quasars still contains the following misleading sentence:
"The highest redshift quasar known (as of June 2011) is ULAS_J1120+0641, with a redshift of 7.085, which corresponds to a proper distance of approximately 29 billion light-years from Earth."
But e... | <urn:uuid:853f6599-bc2e-4b8a-990c-fa6c3b88e789> | 3.234375 | 188 | Q&A Forum | Science & Tech. | 58.325588 |
I ran across an excellent passage in one of Feynman's "extra" lectures about the need to develop physical intuition in learning physics:
Now, all these things you can feel. You don't have to feel them; you can work them out by making diagrams and calculations, but as problems get more and more difficult, and as you try... | <urn:uuid:ea6c5798-c5a9-4bdd-806b-bcd5a2a1f442> | 2.84375 | 807 | Personal Blog | Science & Tech. | 62.664846 |
An anonymous reader tips a piece in Australian Geographic indicating that Pluto may be in for another demotion, as researchers work to define dwarf planets more exactly. "[Australian researchers] now argue that the radius which defines a dwarf planet should instead be from 200–300 km, depending on whether the object is... | <urn:uuid:90ec92f4-2f7b-498e-b7dd-ca498f361995> | 3.15625 | 157 | Truncated | Science & Tech. | 54.608341 |
model attribute to declare a model object the view binds to.
This attribute is typically used in conjunction with views that render data controls, such as forms.
It enables form data binding and validation behaviors to be driven from metadata on your model object.
The following example declares an
enterBookingDetails s... | <urn:uuid:2742a0df-1388-40e1-89d2-1d654dafefc7> | 2.875 | 195 | Documentation | Software Dev. | 33.491648 |
Ocean creatures face climate consequences
Sharks, blue whales and loggerhead turtles look like losers due to climate change coming to the Pacific Ocean in this century, scientists report.
Sea birds, tuna and leatherback turtles, on the other hand, look more likely to prosper as global warming shifts sea temperatures an... | <urn:uuid:402fc682-1597-4eae-9219-c96ac67a3715> | 3.59375 | 250 | Truncated | Science & Tech. | 34.748756 |
sensitivity to initial conditions
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.
contribution of Lorenz
In the early 1960s Lorenz discovered that the weather exhibits a nonlinear phenomenon kno... | <urn:uuid:43680a3a-8af3-4a76-9487-b5cc419c9230> | 2.8125 | 128 | Knowledge Article | Science & Tech. | 35.213615 |
Fill by Stripes
Algorithm Fill by Stripes is more complicated than the previous algorithms. Again, it starts by sorting the rectangles by height. Then it positions the tallest non-positioned rectangle and uses it to start a new horizontal stripe. The algorithm then calls the FillBoundedArea
method to fill that stripe a... | <urn:uuid:568fc29a-8887-4ec7-8af3-03abca337464> | 4.03125 | 970 | Documentation | Software Dev. | 39.036184 |
Contact: Diana Lutz
Washington University in St. Louis
Caption: This artist's conception of a planetary smashup whose debris was spotted by NASA's Spitzer Space Telescope three years ago gives an impression of the carnage that would have been wrecked when a similar impact created Earth's Moon. A team at Washington Univ... | <urn:uuid:ab77309b-39be-43ad-ac70-95b143e13893> | 2.9375 | 121 | Truncated | Science & Tech. | 43.806645 |
We are being told to reduce our carbon footprints in an attempt to reduce the catestrophic effects of global warming. Will this do any good? Until we know the past and future effects of Global Governmental weather manipulation on our climate we cannot take steps to save our planet.
For the past twenty plus years, the p... | <urn:uuid:9e1a3b98-82b6-4ce5-b4d0-abf7a1141dfc> | 2.75 | 2,020 | Personal Blog | Science & Tech. | 28.539028 |
So much fun, itís scary!
Do crawling cockroaches give you the creeps? Are you particularly petrified on a plane? Are you feverishly frightened of falling? Explore popular fears in this heart-pounding, laughter-filled (and totally safe) exhibition about the often-dreaded emotion.
Discover fun, interactive fear challenge... | <urn:uuid:879715c5-fafc-415d-bfb0-134f43229fb5> | 2.84375 | 389 | Content Listing | Science & Tech. | 48.431951 |
Now, doctoral research by evolutionary biologist Kathryn Lord at the University of Massachusetts Amherst suggests the different behaviors are related to the animals’ earliest sensory experiences and the critical period of socialization. Details appear in the current issue of Ethology.
Until now, little was known about ... | <urn:uuid:82b73096-841e-4184-ba8e-49d1cab5db49> | 3.796875 | 1,522 | Content Listing | Science & Tech. | 45.420025 |
Extraordinary and unexpected clouds of methane gas which is a greenhouse gas and is 20 times more intoxicating than carbon dioxide gas has been found bubbling at the surface, by a few scientists who were there to explore and take survey in the Arctic Ocean.
The head of the Russian team who was surveying there was surpr... | <urn:uuid:97b59794-0fe6-473d-be48-1efe0b5de861> | 2.75 | 153 | Truncated | Science & Tech. | 39.826471 |
Case Studies in Earth & Environmental Science Journalism
Session 1: Background and Vent Animals.
Session 2: Origins of Life and Vent Mining.
Session 3: Meet at AMNH with Ed Mathez.
Read the title of the June 6, 1979 Christian Science Monitor article by Lynde McCormick. How does it affect you as a reader? Choose a few t... | <urn:uuid:ced174d2-3f13-4a8c-b260-df2e5a9c0e6a> | 3.015625 | 3,607 | Content Listing | Science & Tech. | 86.259421 |
Abb. 1:An image of the solar photosphere (the surface of the solar disk seen
in visible light), showing the structures responsible for the
total solar irradiance (TSI) variations. The granules, covering most of
the area, are the convective flows carrying energy from the interior.
They contribute the steady component of... | <urn:uuid:7fd68162-ebe4-48fb-9bbf-d5e65ea9f90c> | 4.40625 | 819 | Academic Writing | Science & Tech. | 61.793887 |
The last sentence of the article on missing dark matter says it all: "Even if MACHOs exist, astronomers will still have to look for other as yet undetected particles to explain all of dark matter" (16 April, p 10).
The problem with all dark matter theories is that they require all kinds of as yet undiscovered and exoti... | <urn:uuid:7a7acb5f-c579-49f4-a4e3-4dd32e8b1584> | 2.84375 | 186 | Truncated | Science & Tech. | 49.546316 |
Inheritance diagram for PSmartPointer:
Public Member Functions
|PSmartPointer (PSmartObject *obj=NULL)|
|PSmartPointer (const PSmartPointer &ptr)|
|PSmartPointer &||operator= (const PSmartPointer &ptr)|
Overrides from class PObject
|virtual Comparison||Compare (const PObject &obj) const|
Pointer access functions
|PBool... | <urn:uuid:e7e90d44-a989-49ac-8fee-95068a3b2b38> | 2.890625 | 547 | Documentation | Software Dev. | 42.708383 |
Mechanics: Vectors and Projectiles
Vectors and Projectiles: Problem Set Overview
This set of 34 problems targets your ability to perform basic vector operations such as vector addition and vector resolution, to use right angle trigonometry and vector addition principles to analyze physical situations involving displace... | <urn:uuid:19b07472-bccc-4820-aca0-8db6c6ab2ece> | 4.3125 | 3,271 | Tutorial | Science & Tech. | 40.193848 |
In 1999, Yoseph Bar-Cohen of NASA's Jet Propulsion Laboratory challenged the engineering world to an arm-wrestling contest. Sort of, anyway. He doesn't plan on participating himself, and the arm, which will face off against a human opponent of middling strength, has to be robotic. The catch is, he's not asking for your... | <urn:uuid:dd71d75f-5532-42d5-a21e-40dac2887f2c> | 2.90625 | 967 | Nonfiction Writing | Science & Tech. | 43.03646 |
A robotic sensor that won an R&D 100 Award in 2009 has been put to use by Woods Hole Oceanographic Institution (WHOI) in Gulf of Maine coastal waters to monitor the way red tides behave. These harmful algal blooms, which generate a potentially fatal toxin, can be a challenge to track or predict. The Environmental Sampl... | <urn:uuid:5927b156-e957-49b7-884d-26217fa20a67> | 2.890625 | 2,131 | Content Listing | Science & Tech. | 36.690059 |
Mathematicians Through History
- Grades: PreK–K, 1–2, 3–5
Mathematicians have been changing the history of the world since the Babylonians invented the abacus in the fourth century B.C. The Internet offers great resources to learn about famous mathematicians and math inventors. Start with the MacTutor History of Mathem... | <urn:uuid:65f9afc9-6698-48d1-b02c-f47a6aca33e6> | 3.84375 | 207 | Knowledge Article | Science & Tech. | 34.412013 |
Vertebrates are any animals that have a backbone or spinal column. These animals are so named because nearly all adults have vertebrae, bone or segments of cartilage forming the spinal column. The five main classes of vertebrates are fish, amphibians, birds, reptiles, and mammals.
Vertebrates are the most complex of Ea... | <urn:uuid:992ef1c5-b9c1-40c3-906b-7b02dee3e8e7> | 3.984375 | 252 | Knowledge Article | Science & Tech. | 31.987727 |
It is a mystery that has stymied astrophysicists for decades: how do black holes produce so many high-power X-rays?
It won't come as much of a surprise to most dog owners, but new research has shown that man's best friend is a lot more likely to steal food when nobody's looking, suggesting for the first time that dogs ... | <urn:uuid:0eba0d5d-c9d9-4d29-9de8-0a2267c6d595> | 3.125 | 468 | Content Listing | Science & Tech. | 41.834047 |
"Inspect this code. Here we're creating a new OrderedCollection, and asking it to add 1, then add 2, then add 3, then finally return yourself"
(OrderedCollection new) add: 1; add: 2; add: 3; yourself.
"This is normally not written on one line, but is written like this:"
Here, we're asking the class (remember, this is a... | <urn:uuid:36cd3275-a661-4eac-bdae-01fafe6073be> | 2.734375 | 2,796 | Documentation | Software Dev. | 48.891164 |
Photographic survey of the impacts of Hurricane Katrina on the barrier islands, barrier shoreline, and the Mississippi River Delta along the Louisiana coastline. Primary focus is on the ecosystems such as fish, rookeries, and seagrass beds.
Landscapes of interwoven wetlands and uplands offer a rich set of ecosystem goo... | <urn:uuid:a67a23ef-34f0-452d-969a-c366e22219be> | 2.953125 | 367 | Content Listing | Science & Tech. | 21.803641 |
Resonance is a relatively large selective response of an object or a system that vibrates in step or phase, with an externally applied oscillatory force. Resonance was first investigated in acoustical systems such as musical instruments and the human voice. An example of acoustical resonance is the vibration induced in... | <urn:uuid:bde24c83-e0cf-4a31-a27e-a0205cc62047> | 3.765625 | 192 | Knowledge Article | Science & Tech. | 26.456442 |
On 5 May 1961, two weeks after Yuri Gagarin had orbited Earth to become the world’s first spaceman, American astronaut, Alan B. Shephard was shot into space atop a Redstone rocket. His Mercury spacecraft, which he named ‘Friendship 7’, did not orbit Earth. It was a sub-orbital flight. Launched from Cape Canaveral, the ... | <urn:uuid:855dce1f-cd15-4c1e-98b3-95c41c69b02e> | 3.765625 | 377 | Knowledge Article | Science & Tech. | 59.399147 |
Five sounding rockets streaked into the pre-dawn sky on March 27, 2012, leaving trails of milky white clouds in a little understood part of the atmosphere. The first rocket was launched to the cusp of space at 4:58 a.m. Eastern Daylight Time, and the subsequent launches occurred at 80 second intervals. The goal of the ... | <urn:uuid:542721ca-54a6-486f-9f25-64a563660f29> | 3.984375 | 514 | Knowledge Article | Science & Tech. | 47.666693 |
Water held in soil plays an important role in the climate system. The dataset released by ESA is the first remote-sensing soil moisture data record spanning the period 1978 to 2010 – a predecessor of the data now being provided by ESA’s SMOS mission.
- Soil moisture and ocean salinity satellite ready for launchThu, 29 ... | <urn:uuid:ae8fbb24-f771-4708-a5d9-1c6dda92cbb0> | 3.3125 | 171 | Content Listing | Science & Tech. | 47.037163 |
[advance to content]
Click on the Probability worksheet set you wish to view below.
What is probability?
Probability is the branch of mathematics that deals with random events and chance. It is related to our common sense notion of chance (like when we say, "She will probably go to the park.") but uses exact numbers.
P... | <urn:uuid:bc35062b-39da-4200-8915-4310830adb40> | 3.984375 | 742 | Knowledge Article | Science & Tech. | 60.201443 |
Mission Type: Orbiter
Launch Vehicle: N1 (no. 15005)
Launch Site: NIIP-5 / launch site 110P
Spacecraft Mass: about 6900 kg
Spacecraft Instruments: Unknown
Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958-2000, Monographs in Aerospace History No. 24, by Asif A. Siddiqi
National Space Science Da... | <urn:uuid:44809ca0-50d0-47fe-b47e-8c90a66e220c> | 3.078125 | 331 | Knowledge Article | Science & Tech. | 53.861355 |
Science subject and location tags
Articles, documents and multimedia from ABC Science
Thursday, 15 July 2010
Researchers have unearthed a treasure trove of fossils that contains individuals of an ancient marsupial species ranging from birth to adulthood.
Friday, 9 July 2010
Australian scientists say they have unearthed... | <urn:uuid:7aab84c7-6a34-4376-8065-700167295f90> | 2.859375 | 589 | Content Listing | Science & Tech. | 55.226481 |
A super-powered neutrino generator could in theory be used to instantly destroy nuclear weapons anywhere on the planet, according to a team of Japanese scientists.
If it was ever built, a state could use the device to obliterate the nuclear arsenal of its enemy by firing a beam of neutrinos straight through the Earth. ... | <urn:uuid:deb3d3fd-1ac7-47cb-9ecf-d2bf4d549e11> | 2.78125 | 160 | Comment Section | Science & Tech. | 30.13981 |
A dynamo is a mechanism for converting flow energy to magnetic energy. The magnetic fields of most stars and galaxies are probably sustained by dynamos. The flow energy has an ordered component - the large scale differential rotation, and a turbulent component. Both are important.
The solar dynamo, and some stellar dyn... | <urn:uuid:e011b286-8b6c-49e2-bbba-305ad67704e6> | 3.765625 | 253 | Knowledge Article | Science & Tech. | 32.50786 |
Copyright © 2011 Elsevier Ltd All rights reserved.
Current Biology, Volume 21, Issue 21, R883-R884, 8 November 2011
CorrespondenceAdd/View Comments (0)
Changing expectations about speed alters perceived motion direction
- Our perceptions are fundamentally altered by our knowledge of the world. When cloud-gazing, for ex... | <urn:uuid:bf7b2f3a-b426-4d85-b95c-c9b25030906c> | 3.265625 | 1,412 | Academic Writing | Science & Tech. | 40.653056 |
Not all that long ago we assumed habitable planets needed a star like our Sun to thrive, but that view has continued to evolve. M-class red dwarfs may account for as many as 80 percent of the stars in our galaxy, making habitable worlds potentially more numerous around them than anywhere. And let’s extend our notion of... | <urn:uuid:e220b938-d503-4344-b5f5-b424ca0a9c66> | 4.03125 | 1,081 | Knowledge Article | Science & Tech. | 41.484416 |
an Antarctica with trees and ferns and without ice may be difficult,
but about 35 million years ago, as the supercontinent Pangea was breaking up,
the now-frozen polar continent had a much more temperate climate. What exactly
caused its shift to a deep freeze has long puzzled paleoclimatologists. New
data and models im... | <urn:uuid:141a6e7c-1d6e-4f17-9e9a-7c501a6fda22> | 4.03125 | 1,086 | Knowledge Article | Science & Tech. | 27.452582 |
Lasers come in many shapes and sizes, and perform a myriad of functions ranging from surgery to video recording. In this document, we'll explain how laser light is produced, why it's so useful, and some of its most common applications.
1917, Albert Einstein introduced the field of physics to the concept of the
laser, w... | <urn:uuid:89b811a2-5eca-4241-a1aa-b6cc25fffc9b> | 3.453125 | 1,862 | Knowledge Article | Science & Tech. | 41.826273 |
The August 2010 issue of NANO Magazine, highlighting nanoscale research expected to have a positive impact on the developing world, included articles focused on energy generation, disease prevention and water purification. The articles reflect a now-familiar pattern: a presentation of the horrific scope of the current ... | <urn:uuid:d87067e4-ee8e-458d-869a-29d8586bef76> | 2.984375 | 3,302 | Nonfiction Writing | Science & Tech. | 22.671515 |
This article covers basic PHP syntax, including variable usage, variable types, and several ways of printing variables to the web browser.
Embedded code blocks
PHP is an embedded web development language with many similarities to commercial packages such as Microsoft's Active Server Pages (ASP) or Cold Fusion. One of t... | <urn:uuid:e7ec3735-1e21-41ae-bee7-5353a11e2266> | 3.28125 | 2,083 | Documentation | Software Dev. | 49.235109 |
Methanogens, anaerobic bacteria that generate methane from hydrogen and carbon dioxide, make up the largest group of archaebacteria identified so far. Four genera of methanogens that differ widely in size and morphology are seen here in scanning electron micrographs made by Alexander J. B. Zehnder of the Swiss Federal ... | <urn:uuid:54a02c0c-8662-4a73-95c3-241c2b10b158> | 3.90625 | 405 | Knowledge Article | Science & Tech. | 27.396557 |
Have you ever wondered why leaves change from green to an amazing array of yellow, orange and red during the fall? Leaves get their brilliant colors from pigments made up of various size, color-creating molecules.
During the warm, sunny months, plants use their leaves to turn sunlight into food energy, a process called... | <urn:uuid:6f547f35-9a44-476b-8c07-7ec2bb6ca708> | 4.21875 | 1,403 | Tutorial | Science & Tech. | 52.692006 |
Consider the case where you retrieve a list of many objects which have a status code attached. There may be many different status codes, and you need to fish through the list of codes and display the object differently, based on the priority. So for instance, an object may have many tasks attached, each of which has an... | <urn:uuid:72489df7-4d5e-4e87-8a08-fdaadae9ade0> | 2.78125 | 253 | Personal Blog | Software Dev. | 36.173799 |
The global fishing fleet is currently 2.5 times larger than what the oceans can sustainably support, and as many as 90% of all the ocean’s large fish have been fished out. Unless the current situation improves, stocks of all species currently fished for food are predicted to collapse by 2050.
52% of the world’s fisheri... | <urn:uuid:a832e23b-d166-436e-93be-c34ca87b22b8> | 3.109375 | 152 | Knowledge Article | Science & Tech. | 57.170399 |
So far this year, more than 2.1 million acres have burned in wildfires, more than 113 million people in the U.S. were in areas under extreme heat advisories last Friday, two-thirds of the country is experiencing drought, and earlier in June, deluges flooded Minnesota and Florida.
"This is what global warming looks like... | <urn:uuid:44668518-9dbb-4962-a015-60eba153d3b8> | 3.09375 | 625 | Personal Blog | Science & Tech. | 52.546307 |
Blazing Wings recently posted a list and great photos of twelve solar powered airplanes. It is worth a click just to look at all the different ways people solve the same set of problems. One of the 12 solar airplanes is the Solar Impulse, brainchild of aero pioneer Bertrand Piccard who flew the Orbiter 3 balloon around... | <urn:uuid:58214617-6d90-4dd6-a39a-6313f29f3d1f> | 3.234375 | 349 | Knowledge Article | Science & Tech. | 54.9215 |
The inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit. It is the angular distance of the orbital plane from the plane of reference (usually the primary's equator or the ecliptic), normally stated in degrees.
In the Solar System, the inclination of the orbit of a ... | <urn:uuid:d4d51e70-d136-4cda-952b-6dd613402665> | 4.03125 | 1,138 | Knowledge Article | Science & Tech. | 44.696182 |
Section 1: C Programming Lab
Question 1: Write an interactive program in C language to manage the Clinic Information with menu options like Patient’s details, Doctor’s details, Doctor’s and Patient’s visits, Laboratory details, Bills, Payments etc. using the file handling concepts. The application should be designed us... | <urn:uuid:ca324322-2b77-4d89-a4c3-8ffeb2b61824> | 2.921875 | 265 | Content Listing | Software Dev. | 40.80641 |
Energy in 3 consecutive forms: potential, kinetic, internal (Photo credit: Wikipedia)
A rock has potential energy (PE) localized in it when you lift it up above the ground. The rock is the system; everything else it encounters is the surroundings. Drop the rock and its PE changes to kinetic energy (energy of movement, ... | <urn:uuid:5a593fa3-1f61-43dc-8c47-bd51839fb04a> | 3.53125 | 330 | Personal Blog | Science & Tech. | 45.104417 |
by Nate Jones, Vertebrate Ecology Lab
(still in the Bering Sea) … Of course the bad weather I’ve been writing about was nothing compared to what happens on the Bering during the months of February or March, and the Gold Rush fishes regularly during that time of year, so I had complete faith in the seaworthiness of the ... | <urn:uuid:c3efafd2-55f0-42c5-978e-951582e12ce4> | 3.171875 | 387 | Personal Blog | Science & Tech. | 49.61423 |
Brought to you by the Organic Reactions Wiki, the online collection of organic reactions
[4+3] Cycloaddition is the annulation of an allyl or oxyallyl cation with a four-atom pi system to form a seven-membered ring. It represents one of the relatively few synthetic methods available to form seven-membered rings stereos... | <urn:uuid:f6d64193-87fb-40d1-8fd4-88c5ded8896b> | 2.90625 | 2,450 | Knowledge Article | Science & Tech. | 57.792594 |
Scientists have solved the mystery of why the world's highest mountains sit near the equator - colder climates are better at eroding peaks than had previously been realised.
Mountains are built by the collisions between continental plates that force land upwards. The fastest mountain growth is around 10mm a year in pla... | <urn:uuid:cdacc2e9-4693-48b2-8347-6af74faa092d> | 3.6875 | 296 | Personal Blog | Science & Tech. | 63.917132 |
Writing about climate research has revealed a generation gap within my own family, made obvious this weekend by wine-fuelled dinner-table debates. Visiting my nearest and dearest over the Easter national holiday for the first time since I started Simple Climate, they grilled me on the research I’ve covered.
In the UK d... | <urn:uuid:286004e0-982a-4936-8f26-ec96534b86db> | 3.0625 | 955 | Personal Blog | Science & Tech. | 40.750989 |
Science Fair Project Encyclopedia
In fluid dynamics, head refers to the constant right hand side in the incompressible steady version of Bernoulli's equation. It is possible to express head in either units of height (e.g. meters) or in units of pressure such as pascals (the SI unit).
This is best understood by consider... | <urn:uuid:5ca168c2-ceb8-407e-a99b-603e38a4fba7> | 3.90625 | 215 | Knowledge Article | Science & Tech. | 58.700349 |
DeflagrationA deflagration is a relatively slow explosion, generating only subsonic pressure waves. This sort of explosion is usually produced by rapid chemical combustion reactions, for instance of gunpowder in a firearm, or fuel in an internal combustion engine. Contrast detonation, where the pressure waves are super... | <urn:uuid:95c49858-9644-47a2-9cbd-cdc611f804fb> | 3.34375 | 124 | Knowledge Article | Science & Tech. | 31.633333 |
A rare meteor shower predicted to hit Earth on 1 September should give astronomers only their second chance to study an ancient comet's crust. It could also help them develop a warning system against an otherwise insidious threat - a comet aimed at Earth from the dark fringes of the solar system.
September's shower, ca... | <urn:uuid:3317e00e-6f0b-4237-88c6-b872fb724c41> | 4.1875 | 1,499 | Comment Section | Science & Tech. | 65.301104 |
CARBON, the element that is essential to all life, has sprung a baffling surprise on chemists. An analysis of the 7 million or so known organic compounds has shown that a significantly higher proportion contain even numbers of carbon atoms than odd numbers. Yet carbon chemistry is so diverse that the number of compound... | <urn:uuid:02718a2e-be2c-4760-b692-7fa29f92a1c6> | 3.5625 | 217 | Truncated | Science & Tech. | 42.960724 |
Rachael Porter for NPR
NASA engineer Adam Steltzner led the team that designed a crazy new approach to landing on Mars.
NASA engineer Adam Steltzner led the team that designed a crazy new approach to landing on Mars. Rachael Porter for NPR
It's called the seven minutes of terror. In just seven minutes, NASA's latest mi... | <urn:uuid:42c284b6-065c-41ec-acc3-d3761156a82b> | 3.625 | 2,012 | Truncated | Science & Tech. | 64.855385 |
Using PHP to Interpret Forms10/12/2000
The Internet, as we know it today, is primarily the result of two seminal events:
- The February 1993 introduction of Mosaic, the first graphical Web browser (see references in the sidebar to the right), and,
- The 1994 addition of forms to the HTML specification.
Mosaic, with its... | <urn:uuid:203bf447-8b01-4bf1-898f-d570a27e7b16> | 2.859375 | 926 | Personal Blog | Software Dev. | 54.450618 |
Metallic Glass Stronger Than Steel
Researchers have created a new kind of damage-tolerant metallic glass that may be tougher than any other known material. The new metallic glass is a microalloy featuring palladium, a metal with a high "bulk-to-shear" stiffness ratio that counteracts the intrinsic brittleness of glassy... | <urn:uuid:18bbc2f7-7d14-4367-bdb8-b57f86bd8739> | 2.921875 | 1,340 | Content Listing | Science & Tech. | 54.2611 |
Ancient rainforests resilient to climate change
Climate change wreaked havoc on the Earth’s first rainforests but they quickly bounced back, scientists reveal today. The findings of the research team, led by Dr Howard Falcon-Lang from Royal Holloway, University of London, are based on spectacular discoveries of 300-mil... | <urn:uuid:ac2a5318-dc70-4dc1-8579-7a3b9a2f0b78> | 2.703125 | 131 | Comment Section | Science & Tech. | 59.856798 |
Use of the <style> element in an HTML document:
The <style> tag is supported in all major browsers.
The <style> tag is used to define style information for an HTML document.
Inside the <style> element you specify how HTML elements should render in a browser.
Each HTML document can contain multiple <style> tags.
Tip: To... | <urn:uuid:ed53c828-ccc0-4110-b0e3-abc82dd8ec6d> | 3.71875 | 317 | Documentation | Software Dev. | 54.298077 |
(Linnaeus, 1758) : Box Jelly|
Phylum Cnidaria / Class Cubozoa / Family Carybdeidae
Our West Coast waters are not well endowed with box jellies. The one species that does enter California waters is Carybdea marsupialis (pictured here). Although primarily a warm-water species, it visits nearshore habitats off Santa Barba... | <urn:uuid:349090b5-dd61-475e-9ce7-c95e43bea90e> | 3.515625 | 289 | Knowledge Article | Science & Tech. | 38.801529 |
To understand why gravity modification is not yet a reality, let’s analyze other fundamental discoveries/inventions that changed our civilization or at least the substantially changed the process of discovery. There are several that come to mind, the atomic bomb, heavier than air manned flight, the light bulb, personal... | <urn:uuid:c8f3ecf6-ca5e-4ec1-9997-67fad6fefdf6> | 3.328125 | 1,322 | Personal Blog | Science & Tech. | 38.855286 |
I realise I posted this in the wrong forum sorry
this is grade 10
the problem is:
a silversmith has alloys that contain 40% silver and others that have 50% silver. A custom order requires 150g of 44% silver. How much of each alloy should be melted together to make the bracelet?
so far i got:
Let x represent the 40% all... | <urn:uuid:fa4dd73a-19f7-4c54-8f87-a30ae09fa54f> | 3.03125 | 152 | Q&A Forum | Science & Tech. | 95.036212 |
Current Location in a Wire
Does DC current travel more through the center of the
conductor or more on the surface of the conductor (wire)?
As the frequency of electrical current goes up, it tends to travel
tends more on the surface of a conductor. DC is the ultimate low
frequency. It would tend to move through the enti... | <urn:uuid:778fbe4d-e24b-4f72-9808-f093e78cf1f1> | 3.984375 | 697 | Knowledge Article | Science & Tech. | 57.318897 |
Global warming is sneaky. For more than a century it has been hiding large amounts of excess heat in the world’s deep seas. Now that heat is coming to the surface again in one of the worst possible places: Antarctica.
For obvious reasons this should be regarded as alarming enough a story for the MSM to report on -- may... | <urn:uuid:4c01ef03-5f88-408d-a754-7c32b2291614> | 2.953125 | 199 | Personal Blog | Science & Tech. | 42.063621 |
The resulting map should contain a key for each value of type b, occurring in any set in the original map. The new values (of type
type SetMap k a = Map k (Set a) invertSetMap :: (Ord a, Ord b) => SetMap a b -> SetMap b a
Set a) are all those original keys for which the new key occurred in the value set. Intuitively, i... | <urn:uuid:f54234e4-c1fc-435f-b938-9a8bbbf8205e> | 3.078125 | 346 | Personal Blog | Software Dev. | 67.703303 |
Lost City Macrofauna
Woods Hole Oceanographic Institution
WHOI/MIT Joint Program in Oceanography
When the Lost City Hydrothermal Field first emerged in the lights of a submersible in 2001 the venting spires did not appear to teem with life like most other vent fields around the world. There were no large red tubeworms,... | <urn:uuid:8ccbff49-f5e5-4142-a610-ac49f9cd1b30> | 3.375 | 713 | Knowledge Article | Science & Tech. | 39.104476 |
(a) In a charge current, spin “up” and “down” electrons flow together. In a spin current, up and down electrons flow in opposite directions. (b) A schematic of the spin Hall effect. Spin-orbit coupling induces an orbital motion opposite in direction to the electron spin, deflecting up- and down-spin electrons in opposi... | <urn:uuid:e4770dfe-e174-4b7f-9fdf-11ab7de87df9> | 3.140625 | 90 | Knowledge Article | Science & Tech. | 51.155182 |
Is there an official specification for the
round function in Haskell? In GHCi version 7.0.3 I see the following behaviour:
ghci> round (0.5 :: Double) 0 ghci> round (1.5 :: Double) 2
Since both 0.5 and 1.5 are representable exactly as floating point numbers, I expected to see the same behaviour as in Python:
>>> round(... | <urn:uuid:1a67c9d9-22a8-40db-898d-fad54bdf5862> | 2.75 | 123 | Q&A Forum | Software Dev. | 96.728435 |
Science Fair Project Encyclopedia
etc. see list of Coccinellidae genera
Ladybirds (Commonwealth English), also known as ladybugs (American English, Canadian English) or lady beetles (some scientists favor this) are a family, Coccinellidae ("little sphere"), of beetles; the name is thought to allude to the Blessed Virgi... | <urn:uuid:fb27213b-8fac-4b66-a084-0f2c70e7049a> | 3.484375 | 940 | Knowledge Article | Science & Tech. | 33.467071 |
I Sense Dinner Is Ready
We should all be lucky enough to have the sense of a bat, at least their auditory sense. If we did, we'd never lose glasses, keys, or anything else. All we'd have to do is stand in the middle of a room and hum or click our tongues to locate the things we misplace.
Of all the bats in the world, a... | <urn:uuid:0576c81f-aa20-4a5d-993f-bac0afd0f610> | 3.84375 | 388 | Knowledge Article | Science & Tech. | 53.802286 |
American solar satellite. One launch, 1980.02.14. The Solar Maximum Mission (SMM) was intended primarily to study solar flares and related phenomena.
Launched during a period of maximum solar activity, SMM observed more than 12,000 flares and over 1,200 coronal mass ejections during its 10 year lifetime.
SMM provided m... | <urn:uuid:f661b1a0-3cd5-4d93-85e6-c7be56b6ca28> | 3.0625 | 1,545 | Knowledge Article | Science & Tech. | 52.975269 |
Microsoft® Visual Basic® Scripting Edition
Language Reference |
Is is also a comparison operator, but it is used exclusively for determining if one object reference is the same as another.
Const A = "MyString"
|Byte||0 to 255.|
|Boolean||True or False.|
|Integer||-32,768 to 32,767.|
|Long||-2,147,483,648 to 2,147,483,6... | <urn:uuid:e5a69bab-9432-4784-ae35-5504fcab4c03> | 2.765625 | 439 | Documentation | Software Dev. | 73.330508 |
Welcome back for another episode in the pattern series! This will also be the last article about Design Patterns, since I've finished reading the Head First Design Patterns book :)
It's been a very interesting journey, lots of new patterns learned, lots of knowledge gained, and now it's time to apply them in real proje... | <urn:uuid:77e3bebf-c379-4813-a69c-badc9cc44686> | 2.765625 | 1,129 | Personal Blog | Software Dev. | 55.842307 |
First, there are quite a few preprocessor directives out there (14 in total I believe) with #include winning the popularity contest. Others that are used often are #pragma and #ifndef and all of its family .Let's take a look at pragma:
Each implementation of C and C++ supports feature unique to its host machine or oper... | <urn:uuid:6fa399e7-1bb0-403d-b825-3a88965aa9ff> | 3.40625 | 2,115 | Documentation | Software Dev. | 44.006472 |
|Spring 2010||Astronomy 110||MWF 9:30 &mdash 10:20|
The Milky Way Galaxy is a vast pinwheel of stars and gas turning within an enormous cloud of invisible matter. Many generations of stars have formed and died within its disk, enriching our galaxy's stock of heavy elements. Before the disk formed, the future Milky Way ... | <urn:uuid:24643003-6964-4a5e-822d-7d0915e20aad> | 3.828125 | 214 | Content Listing | Science & Tech. | 70.288787 |
In a study published online Feb. 20 in PLOS One, Cornell biomedical engineers and Weill Cornell Medical College physicians described how 3-D printing and injectable gels made of living cells can fashion ears that are practically identical to a human ear. Over a three-month period, these flexible ears grew cartilage to ... | <urn:uuid:e9a1b34c-e62a-4a53-a9bd-41eba0d84ac0> | 3.828125 | 1,276 | Content Listing | Science & Tech. | 44.241462 |
Case Studies in Earth & Environmental Science Journalism
Guest Scientist: Drew Shindell, NASA Goddard Institute for Space Sciences
Before Molina and Rowland’s 1974 paper, a large portion of the world attributed ozone decrease to airplanes and jets. Why do you think there wasn’t a lot of press coverage about their chlor... | <urn:uuid:ea11e2be-fbc7-4cf2-a524-d1ffeb075209> | 3.203125 | 2,129 | Content Listing | Science & Tech. | 57.656468 |
When the main function of your program is invoked, it already has
three predefined streams open and available for use. These represent
the “standard” input and output channels that have been established
for the process.
These streams are declared in the header file stdio.h.
— Variable: FILE * stdin
The standard input s... | <urn:uuid:f937af66-8b77-48f0-bc18-10c7c60c4e11> | 3.9375 | 349 | Documentation | Software Dev. | 49.111918 |
Entomological Survey of Rio Bravo Conservation and Management Area, Belize
Peter Kovarik, John Shuey, and Chris Carlton
During the mid-late 1990's, lepidopterist John Shuey became interested in testing the widely touted concept that insect communities are useful in evaluating impacts to ecological integrity in tropical... | <urn:uuid:3906d3d8-a657-4701-9dfb-88a24cc19cd2> | 3.375 | 1,110 | Knowledge Article | Science & Tech. | 27.190678 |
IS IT LAKE CHAMPLAIN'S MONSTER?
By JOHN NOBLE WILFORD
Published: June 30, 1981
ON July 5, 1977, Sandra Mansi was showing her husband-to-be the countryside around Lake Champlain where she had grown up. They talked and laughed about the legends of a large monster inhabiting the lake. While sitting on the shore, she recal... | <urn:uuid:021c8b37-6e45-4159-bb8e-cbabca0583d7> | 2.6875 | 1,699 | Truncated | Science & Tech. | 57.382513 |
|Apr24-12, 05:34 PM||#1|
Gamma Ray Bursts
I've been reading about gamma ray bursts (GRBs) lately and have found them to be pretty interesting. As far as I have read, it appears that we still don't know much about what actually causes them, or rather, how the "internal engine" works.
The most popular idea for longer las... | <urn:uuid:3983d5da-203d-4ac0-b952-7a5c7722c826> | 2.921875 | 946 | Comment Section | Science & Tech. | 59.622484 |
santaclaus wrote:(again, don't know notation for square root)
Please review the article on formatting math as text
, or else follow the instructions in the forum posting on LaTeX formatting
santaclaus wrote:How do I solve and equation like the following?
I would first do 1.05 log x = log 9
I will guess that you are usi... | <urn:uuid:f11ea693-0997-4203-84a5-70078301fd96> | 2.6875 | 334 | Comment Section | Science & Tech. | 88.777132 |
Web edition: April 12, 2007
"Gentlemen, that is surely true, it is absolutely paradoxical; we cannot understand it, and we don't know what it means. But we have proved it, and therefore we know it must be the truth." Benjamin Pierce, a Harvard mathematician, after proving Euler's equation, eip = 1, in a 19th-century le... | <urn:uuid:18a51e07-5ad3-4ed9-ace6-5557173435fb> | 3.5 | 1,132 | Knowledge Article | Science & Tech. | 46.699464 |
How was the mass and radius of the Earth calculated?
The mass may be determined using Newton's law of gravitation. Force (F) is said to be equal to the gravitational constant multiplied by the mass of the planet and the mass of the object, divided by the square of the radius of the planet. This is set as an equivalent ... | <urn:uuid:2cde2762-861d-49c5-8dc4-49f5bfec71b9> | 3.8125 | 202 | Knowledge Article | Science & Tech. | 60.540619 |
Guess what just came about...
They say, "Common sense tell us there is nothing." but I say the opposite. Common sense would say there is water. http://news.yahoo.com/s/nm/20080709/sc_nm/moon_water_dc
New scans show evidence of water on the moon
By Maggie Fox, Health and Science Editor
Wed Jul 9, 2:02 PM ET
Tiny green a... | <urn:uuid:2201516c-659c-4c49-afa3-5efed1c4d373> | 3.4375 | 797 | Comment Section | Science & Tech. | 54.884936 |
A constant function is a linear function for which the range does not change no matter which member of the domain is used.
for any x1 and x2 in the domain.
With a constant function, for any two points in the interval, a change in x results in a zero change in f(x).
Graph the function f(x) = 3.
The graph of a constant f... | <urn:uuid:b0d5d056-fa49-4a95-9ea5-9efe4a3ad989> | 3.203125 | 88 | Tutorial | Science & Tech. | 82.799465 |