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What can astronomy enthusiasts look forward to in the upcoming year? Here are some events, due to the motions of solar system bodies, that could have been predicted a century before now. Here also are events due entirely to human ingenuity that would have been thought possible only by the most far-sighted dreamers of 1... | <urn:uuid:db3d2320-a11c-4605-bb5a-beb70178d19b> | 2.78125 | 2,803 | Personal Blog | Science & Tech. | 62.71815 |
Web edition: August 2, 2007
Members of an established ecosystem develop a sense of balance, usually permitting at least limited biodiversity and a stable structure. When interlopers arrive that aren't responsive to the same environmental checks and balances, they can overrun the ecosystem, eliminating some members and ... | <urn:uuid:0232d7fe-86b3-4eed-a6a3-15242792c296> | 3.09375 | 111 | Knowledge Article | Science & Tech. | 25.23 |
Using Solar PowerWhen you think of solar power you think of heating and light for your home. That is one of the many things that we use solar power for. Solar power is everywhere and it is growing everyday. There are different products that are made using solar power. This article will list these products and their use... | <urn:uuid:ded96f7f-c619-4ee2-b2f1-d4e7e539a4e2> | 2.828125 | 739 | Knowledge Article | Science & Tech. | 40.145181 |
by Anthony Carpi, Ph.D.
Chemical reactions happen all around us: when we light a match, start a car, eat dinner, or walk the dog. A chemical reaction is the process by which substances bond together (or break bonds) and, in doing so, either release or consume energy (see our Chemical Reactions module). A chemical equat... | <urn:uuid:d4e1cc9c-45b2-4878-9032-5c14b19a82c7> | 4.34375 | 1,588 | Knowledge Article | Science & Tech. | 49.229151 |
Back to the Big Bang: Inside the Large Hadron Collider
Venture deep inside the world’s biggest physics machine, the Large Hadron Collider. This extraordinary feat of human engineering took 16 years and $10 billion to build, and recently began colliding particles at energies unseen since a fraction of a second after the... | <urn:uuid:7c760ca8-52ef-4031-924a-651595cf86c7> | 2.703125 | 152 | Truncated | Science & Tech. | 30.131828 |
10.24.12 - A new study using data from NASA's Spitzer Space Telescope suggests a cause for the mysterious glow of infrared light seen across the entire sky.
10.23.12 - NASA's newest set of X-ray eyes in the sky, the Nuclear Spectroscopic Telescope Array (NuSTAR), has caught its first look at the giant black hole parked... | <urn:uuid:a159d40a-9f9f-4675-95fd-0a2204a84358> | 2.859375 | 419 | Content Listing | Science & Tech. | 67.807495 |
Alaska's Mount Redoubt Volcano erupted on March 22, 2009, spewing ash into the atmosphere and obscuring the skies. Four more eruptions followed. According to scientists at the Alaska Volcano Observatory, the ash plume reached a height of 50,000 feet above sea level.
Because they happened at night, the eruptions could o... | <urn:uuid:d7a94c24-ed9d-4577-bc8f-e6667d2cb931> | 3.953125 | 136 | Knowledge Article | Science & Tech. | 39.435878 |
|Long-tailed Duck - Dave Menke, National Digital Library; Great Black-backed Gull - Ken Wilmington, Wikimedia Commons|
Friday, March 9, 2012
Great Lakes waterbirds and warming water temperatures
We know that the Gr Lakes are used extensively by wintering and migrating birds of many species. What influence does the warm... | <urn:uuid:b14e651e-6fc9-4a4b-bdd9-897afaaeef1b> | 3.53125 | 208 | Personal Blog | Science & Tech. | 40.505441 |
It’s also a perfect opportunity to revisit the old saw that Kansas is flatter than a pancake — an issue addressed scientifically, if serendipitously, half a dozen years ago in the ever-entertaining and illuminating Annals of Improbable Research. Writing for the May/June issue of 2003, scientists from the Departments of... | <urn:uuid:c7669446-98ad-4503-bad6-88a96e52167a> | 3 | 794 | Personal Blog | Science & Tech. | 45.783088 |
"The sensitivity of the ECS [Earth's climate system] to changes in radiative forcing at the top of the atmosphere is equal to 0.41±0.05 K W−1 m2."The IPCC, however, claims that a change in the top of the atmosphere [TOA] radiation of 3.7 W/m2 from a doubling of CO2 will lead to a 3°C ± 1.5°C temperature increase. The I... | <urn:uuid:9ab8a449-c349-439e-8dfa-fe717c0651c1> | 3.21875 | 282 | Personal Blog | Science & Tech. | 68.652574 |
How good are you at reading faces? Scientists have found that your gender may affect this ability.
Why are there males and females? Why are there two sexes instead of three, or twelve, or one?
Close your eyes and imagine that you’re a Mormon cricket. Why, you ask? Well, Mormon crickets are interesting. Like desert locu... | <urn:uuid:f425c05a-26c8-4aea-80ff-49bcaecb20a4> | 3.453125 | 394 | Content Listing | Science & Tech. | 57.329165 |
|Date:||March 02, 2011|
Python is an easy to learn, powerful programming language. It has efficient high-level data structures and a simple but effective approach to object-oriented programming. Python’s elegant syntax and dynamic typing, together with its interpreted nature, make it an ideal language for scripting and... | <urn:uuid:cf447887-a002-4635-b770-2ca392b13511> | 3.265625 | 413 | Knowledge Article | Software Dev. | 41.043593 |
Search Loci: Convergence:
Mathematics is not a deductive science -- that's a cliche. When you try to prove a theorem, you don't just list the hypotheses, and then start to reason. What you do is trial and error, experimentation, guesswork.
I Want to Be a Mathematician, Washington: MAA Spectrum, 1985.
What's in Converge... | <urn:uuid:48e5bb6b-a084-4a3c-899f-c91a85c1c0b1> | 2.875 | 715 | Content Listing | Science & Tech. | 31.214035 |
High Plains Aquifer Water-Level Monitoring Study
Water-Level Changes in the High Plains Aquifer—Predevelopment to 1993
By Jack T. Dugan and Dale A. Cox
U.S. Geological Survey
Water-Resources Investigations Report 94-4157
Regional variability in water-level change in the High Plains aquifer underlying parts of South Dak... | <urn:uuid:b7c8b138-2ed3-455c-91b8-b0a7326a6618> | 3.046875 | 797 | Knowledge Article | Science & Tech. | 39.238993 |
Tag: "clays" at biology news
Scientists propose the kind of chemistry that led to life
...were nothing more complicated than the surfaces of clays
or other minerals. In its simplest form, the model shows how two catalysts in a solution, A and B, each acting to catalyze a different reaction, could end up forming what th... | <urn:uuid:96ecbe1f-0422-40ee-ac56-49ee1092ea08> | 2.875 | 357 | Content Listing | Science & Tech. | 53.045421 |
The purpose of our experiment was to measure the rate of evaporation
of anhydrous isopropyl alcohol. The experiment involved measuring
the amount of alcohol that evaporated from a glass, funnel-shaped
container every twelve hours. These values were then plotted
and the resulting equation was found to be y=101.38e-.0026... | <urn:uuid:1050ac4c-77e9-45f8-bb42-550d7c5f6e84> | 4.09375 | 684 | Academic Writing | Science & Tech. | 50.382691 |
Pronunciation: /pruf/ ?
A proof is a logical argument
that shows that a
is always true. A mathematical proof must show that a claim is
true in all cases, without any exceptions. The opposite of a proof is a
is the opposite of a proof: an argument that shows a claim is always false. A claim that has not
been proved alwa... | <urn:uuid:562db429-e8ea-45cf-94bb-47884b8e4c66> | 4 | 672 | Knowledge Article | Science & Tech. | 74.637912 |
cnidarianArticle Free Pass
- General features
- Natural history
- Form and function
- Contributors & Bibliography
cnidarian, also called coelenterate, any member of the phylum Cnidaria (Coelenterata), a group made up of more than 9,000 living species. Mostly marine animals, the cnidarians include the corals, hydras, je... | <urn:uuid:f2518aad-279a-42e8-8a8d-21842be9b444> | 3.6875 | 2,898 | Knowledge Article | Science & Tech. | 21.036667 |
2001: When Green Tech was Born
Every few weeks, someone asks me "When did green technology begin?"
Technically, it started around 2000 B.C. when the Egyptians began to design buildings with passive air conditioning. The Roman Emperor Varius Avitus followed by having snow brought from the mountains to cool his palace, t... | <urn:uuid:2372cca6-bd7b-4acc-b5d1-d27364e33d0c> | 2.890625 | 1,448 | Content Listing | Science & Tech. | 52.020958 |
It is a true example of mind control in nature, and though scientists are well aware of the method of infection, they are uncertain exactly how the mind control is accomplished. When a wasp successfully attacks a host spider, the spider is temporarily paralyzed as the wasp lays eggs on the tip of the spider's abdomen. ... | <urn:uuid:1941f551-c7d9-489a-bab3-02a57746dcad> | 3.171875 | 315 | Personal Blog | Science & Tech. | 44.771981 |
New England Regional Assessment (NERA)
|The purpose of this regional assessment of potential climate change impacts on the New England Region (the six New England states plus upstate New York) is to provide a local perspective on a global issue. The intent in producing this Overview document is to provide the most curr... | <urn:uuid:ca96693b-9411-40b4-b7d0-9922365d1fde> | 2.859375 | 226 | Content Listing | Science & Tech. | 28.671579 |
The carbon supermaterial graphene is already known for its exotic electronic properties. Now two studies suggest that the material is also one of the strongest, most elastic and stiffest materials known to science.
Graphene crystals are atom-thick sheets of carbon atoms connected together in hexagons, like chicken wire... | <urn:uuid:5ad924d8-a28e-4933-be95-89923015eeda> | 3.640625 | 1,630 | Comment Section | Science & Tech. | 49.321941 |
Physics is consists of mainly particles and paradox. The double split experiment for example, shows that light can behave as both a wave and a particle, and the way that we observe it makes it one or the other.
According to the experiment, if you observe which of the two slits the light passes through, it behaves like ... | <urn:uuid:a80799db-f225-421a-83ce-f60e4a455e18> | 3.671875 | 240 | Knowledge Article | Science & Tech. | 56.674 |
is a non-expanding, clay
-sized, micaceous mineral. Illite is a phyllosilicate
or layered alumino-silicate. Its structure is constituted by the repetition of Tetrahedron – Octahedron – Tetrahedron (TOT) layer. The interlayer space is mainly occupied by poorly hydrated potassium cations responsible for the absence of sw... | <urn:uuid:e62abc87-5cfc-418d-8daa-dbc87e30c33b> | 3.390625 | 473 | Knowledge Article | Science & Tech. | 33.998957 |
This week researchers announced that they've confirmed the presence of dark energy in the universe -- a mysterious force that is pushing the expansion of the universe ever outwards. The new finding, reported by astronomers using the Chandra X-Ray Observatory, helps explain how the universe got the way it is, and the wa... | <urn:uuid:78a3f731-80c2-4a48-8757-d30662afd37b> | 2.8125 | 183 | Truncated | Science & Tech. | 35.081623 |
CLOSER TO HOME: In this artist's depiction of COROT 9 b, the Jupiter-size planet's relatively distant host star is visible in the background. The star is very similar to our own sun in both size and temperature. Image: Instituto de Astrofísica de Canarias
A French spacecraft designed to discover new worlds beyond our s... | <urn:uuid:46b98e5b-3adf-45f7-970b-3f157040f7d4> | 4.0625 | 1,379 | Knowledge Article | Science & Tech. | 35.586214 |
The shuttle Columbia landing after mission STS-58. The drag chute is deployed to slow the shuttle down.
Click on image for full size
Courtesy of NASA
Shuttle Returns Safely
News story originally written on May 7, 1998
The shuttle Columbia returned after 16 days in space. Some interesting things happened after the shutt... | <urn:uuid:a796cdf9-2033-4b4c-b9e7-1d85171d8825> | 3.53125 | 630 | Content Listing | Science & Tech. | 61.147264 |
Thermal emission spectra provide specific information for the composition of debris ejected during the Deep Impact experiment. Comparisons with previously studied dusty objects including Hale-Bopp and a dust disk around a forming star named HD100546 help us understand and interpret the spectrum of Tempel 1 after impact... | <urn:uuid:7ad779ca-4fe8-4a9d-ba59-901a0e54fa62> | 3 | 284 | Knowledge Article | Science & Tech. | 62.346518 |
Issue Date: January 28, 2013
Light-Driven Flow Reaction Features Molecular Acrobatics
By shining ultraviolet light on solutions of alkene-substituted pyrroles, chemists have enticed the molecules to perform never-before-seen molecular acrobatics. Through a twisting and turning cycloaddition-rearrangement reaction, simp... | <urn:uuid:1befdb48-2ed6-43bd-bbac-cba3b42993c0> | 3.046875 | 340 | Truncated | Science & Tech. | 38.69439 |
Atomic Number: 8
Atomic Weight: 15.9994
Discovered By: Joseph Priestly, Carl Wilhelm Scheele
Discovery Date: 1774 (England/Sweden)
Electron Configuration: [He]2s22p4
Word Origin: Greek: oxys: sharp or acid and Greek: genes: born, former... 'acid former'
Isotopes: Nine isotopes of oxygen are known. Natural oxygen is a m... | <urn:uuid:f28cfd0b-a4af-4472-b260-350abe95d30e> | 3.40625 | 581 | Knowledge Article | Science & Tech. | 48.191146 |
A helix (pl: helixes or helices) is a type of smooth space curve, i.e. a curve in three-dimensional space. It has the property that the tangent line at any point makes a constant angle with a fixed line called the axis. Examples of helixes are coil springs and the handrails of spiral staircases. A "filled-in" helix – f... | <urn:uuid:5a8e0062-b03e-49d9-aeec-db77391cf0ab> | 4.1875 | 881 | Knowledge Article | Science & Tech. | 49.256289 |
Printf for Java is a pure Java implementation of the famous printf data formatting function. It supports precompiled format strings for faster processing and an object-oriented data model for maximum flexibility. Printf for Java has helped hundreds of programmers port legacy C applications to Java.
UniT is a general pu... | <urn:uuid:d78e9eda-b587-494e-a0d8-865f533a2e9e> | 2.703125 | 660 | Content Listing | Software Dev. | 37.861414 |
RSA_generate_key — generate RSA key pair
*RSA_generate_key(int num, unsigned long e, void (*callback)(int,int,void
*), void *cb_arg);
RSA_generate_key() generates a key pair and returns it in
a newly allocated RSA structure. The pseudo-random
number generator must be seeded prior to calling RSA_generate_key().
The modu... | <urn:uuid:b40104a3-1759-42a3-ae0c-c0d8f14f4d7c> | 2.921875 | 373 | Documentation | Software Dev. | 46.931187 |
|Browse All Terms|
|Beginning With||By Language|
|A B C D E F G H I J K L M N O P Q R S T U V W X Y Z :: All||
Also called “molecular manufacturing” because involves manipulating matter on atom by atom or molecule by molecule basis to attain desired configurations. An example of “natural” nanotechnology is the developm... | <urn:uuid:eee7af7b-a268-4065-b697-470caa8efc73> | 2.96875 | 234 | Structured Data | Science & Tech. | 46.590297 |
Black holes cannot be observed directly and therefore cannot
be "discovered". The indirect evidence for two kinds of black holes
is now overwhelming. Those of a few solar masses produced by supernovae
and much larger ones at the center of some galaxies.
The existence of bodies with
gravitational fields strong enough to... | <urn:uuid:9bff1a3c-99f3-46c6-a274-15a5cf310b5e> | 3.8125 | 868 | Personal Blog | Science & Tech. | 66.325256 |
A diagrma consists of a rectangle ABCD and a triangle DXY so that X and Y are points on the line segments AB and BC respectively and angle DXY= 90 degrees. If all the line segments in the diagram have inte ger lengths, then we call it a Sophie Diagrma.
a) show that DA/XB = AX/BY = XD/YX
b) A partucular Sophie Diagram h... | <urn:uuid:4776cb63-3c61-4081-aefa-34f814c37e55> | 2.921875 | 125 | Q&A Forum | Science & Tech. | 90.004118 |
The remnant of the supernova SN 1006 seen at many different wavelengths
This remarkable image was created from pictures taken by different telescopes in space and on the ground. It shows the thousand-year-old remnant of the brilliant SN 1006 supernova, as seen in radio (red), X-ray (blue) and visible light (yellow).
Ra... | <urn:uuid:352591a0-6c6d-4ef0-b533-6c3a2865c71d> | 2.90625 | 293 | Truncated | Science & Tech. | 59.638824 |
Mass transfer between double white dwarfs
UNSPECIFIED. (2004) Mass transfer between double white dwarfs. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 350 (1). pp. 113-128. ISSN 0035-8711Full text not available from this repository.
Official URL: http://dx.doi.org/10.1111/j.1365-2966.2004.07564.x
Three periodicall... | <urn:uuid:62f2d357-0aed-4c39-bbab-364c14fb429b> | 2.828125 | 572 | Academic Writing | Science & Tech. | 55.491702 |
Science subject and location tags
Articles, documents and multimedia from ABC Science
Wednesday, 4 April 2012
StarStuff Podcast Scientists say it's time to abandon existing theories that Earth is composed of the same material as chondritic meteoroids. Plus, pinpointing when dark energy became the dominate force in the ... | <urn:uuid:1c074eeb-529a-4cb5-bd3c-3ee784d904bc> | 2.90625 | 622 | Content Listing | Science & Tech. | 46.358192 |
Archives of Ask A Scientist!
About "Ask A Scientist!"
On September 17th, 1998 the Ithaca Journal ran its first "Ask A Scientist!" article in which Professor Neil Ashcroft , who was then the director of CCMR, answered the question "What is Jupiter made of?" Since then, we have received over 1,000 questions from students... | <urn:uuid:5f27ca98-bf4f-4b80-a8b1-96377cf8078c> | 2.90625 | 669 | Q&A Forum | Science & Tech. | 54.727486 |
Overriding vs Overloading
The method Overriding and method Overloading are two concepts/techniques/feature found in some programming languages. Both concepts allow the programmer to provide different implementations for methods with the same name. Method overriding allows the programmer to provide an alternative implem... | <urn:uuid:763e1be8-ee0c-48e5-a91f-57a776218f38> | 4.21875 | 750 | Knowledge Article | Software Dev. | 31.87907 |
How A Mosquito Works : Automated Mosquito Misting Systems : Homeland Defense Corp. : Valdosta GA
Facts: The Mechanics of a Mosquito
You're out in your backyard during the summer enjoying your family and grilling your dinner. Oh!! You never heard or felt it coming. You look down see a painful, swelling mosquito bite. La... | <urn:uuid:3cb8e045-a17e-419e-80b5-8113b2033da4> | 3.453125 | 897 | Knowledge Article | Science & Tech. | 49.712727 |
Anyone working with visible-light lasers can’t fail to notice the speckle patterns that coherent light produces upon reflection from a scattering surface. Moving either the point of view or the surface itself causes the speckle patterns to appear to slide one way or the other. By merely noticing this pattern, one is pe... | <urn:uuid:380bbdd2-853d-45dc-bf21-c85a5085ea56> | 3.609375 | 959 | Academic Writing | Science & Tech. | 30.182318 |
Africa Can Adapt to Climate Change
A new study warns of the potential problems Africa faces from rising temperatures. The Nairobi-based International Livestock Research Institute (ILRI) says the continent must learn to adapt to shorter growing seasons. The report was released as the U.N. Climate Change Conference is he... | <urn:uuid:84e4c175-e7ea-4885-9994-5d1bf361cb42> | 2.96875 | 117 | Truncated | Science & Tech. | 34.410217 |
So, on the surface of Mars, inside Gale Crater on a plain called Aeolis Palus, our tenacious six-wheeled Mars Science Laboratory (MSL) is doing cutting-edge laboratory work on an alien world and mission scientists are itching to announce a "historic" discovery.
"This data is gonna be one for the history books. It's loo... | <urn:uuid:6a00ad1c-4067-4b05-93f2-5068cd32f57c> | 2.9375 | 261 | Truncated | Science & Tech. | 32.422444 |
A Russian scientist is trying to convince people they can change the world simply by using their own energy. He claims that thinking in a certain way can have a positive or negative effect on the surrounding environment. We are developing the idea that our consciousness is part of the material world and that with our c... | <urn:uuid:2895f05f-914a-40dc-b260-9b75c5232b13> | 2.875 | 153 | Personal Blog | Science & Tech. | 37.918438 |
I use sound to study whales in the ocean. Understanding sound is absolutely essential to my research, and to understand sound, you've got to understand the wave equation.
We're not going to actually derive the wave equation, but it's important to know what goes into it. (if you want to see the real math, look here). In... | <urn:uuid:81ea2935-49fa-4673-8f3c-0e762e1eef54> | 3.625 | 397 | Personal Blog | Science & Tech. | 52.101071 |
The most famous eclipsing binary star is visible to the naked eye and has a rich mythology associated with it.
Algol is called the Winking Demon Star because of its light variation and because Perseus is according to mythology holding the severed head of the Gorgon or demon.
|The Algol System|
A blue spectral class B8 ... | <urn:uuid:34945c72-c3d7-432f-9f39-1d7ed3942beb> | 3.578125 | 393 | Academic Writing | Science & Tech. | 48.433115 |
Rao, Madhusudana S (1997) Method for measurement of the angles of polygons. In: Optical Engineering, 36 (7). pp. 2062-2067.
Restricted to Registered users only
Download (114Kb) | Request a copy
A simple technique is devised to measure the angles of a spentagon and a hexagon without using expensive pectrometers, autocol... | <urn:uuid:c78e5874-f256-46d6-9119-17a7e7398023> | 2.71875 | 253 | Academic Writing | Science & Tech. | 27.408781 |
Photic zoneocean, that is exposed to sufficient sunlight for photosynthesis to occur. The depth of the photic zone can be greatly affected by seasonal turbidity. Since the photic zone is the only zone of water where primary productivity occurs, an exception being the productivity connected with abyssal hydrothermal ven... | <urn:uuid:82bed542-6e12-42ef-a9ae-3483c38308e8> | 3.734375 | 145 | Knowledge Article | Science & Tech. | 21.300714 |
From Math Images
| Dragons 1
|Created By: Jos Leys
- A tessellation created in the style of M.C. Escher.
Basic Description This dragon tessellation was designed to emulate the style of M.C. Escher. Escher was famous for his lithographs depicting tessellations or endless loops. Tessellations are images that repeat and s... | <urn:uuid:7bbebbcc-b901-4e57-ad4e-56266a34e07f> | 3.34375 | 278 | Content Listing | Science & Tech. | 42.115572 |
Mike Barnett, K. Rustan M. Leino, and Wolfram Schulte
The Spec# programming system is a new attempt at a more cost effective way to develop and maintain high-quality software. This paper describes the goals and architecture of the Spec# programming system, consisting of the object-oriented Spec# programming language, t... | <urn:uuid:15e7c71d-9d6c-431c-9558-aaea2bd9b7ba> | 2.6875 | 162 | Academic Writing | Software Dev. | 20.762909 |
The barycenter (or barycentre; from the Greek βαρύκεντρον) is the point between two objects where they balance each other. For example, it is the center of mass where two or more planets orbit each other. When a moon orbits a planet, or a planet orbits a star, both bodies are actually orbiting around a point that lies ... | <urn:uuid:952d50a3-3413-4eb5-8a76-7272b16469da> | 3.75 | 172 | Knowledge Article | Science & Tech. | 71.841071 |
Earth's Climate Follows The Sun's UV Groove
That large changes in solar radiation can affect Earth's climate is widely accepted. However, the hypothesis of solar-induced centennial to decadal climate changes, which suggests feedback mechanisms in the climate system amplifying even small solar variations, has not found ... | <urn:uuid:0b84f591-3e47-4b2a-a1c1-4523b0379c43> | 4.0625 | 2,174 | Personal Blog | Science & Tech. | 30.455032 |
(a) Sketch the phase diagram for O2, showing the four points given above and indicating the area in which each phase is stable.
Try sketching the phase diagram yourself; check your result here
(b) Will O2(s) float on O2(l)? Explain.
From the phase diagram in part (a), the solid-liquid line is normal (slopes to the righ... | <urn:uuid:adf43bd8-a1a9-4f83-8fc7-2af6e0d36465> | 3.15625 | 170 | Q&A Forum | Science & Tech. | 83.117053 |
Approximately 30 kilometers around the Chernobyl plant is the designated Exclusion Zone, where the majority of radioactive materials and equipment used in the containment of the disaster was abandoned. The Ukrainian Ministry of Emergencies governs the zone - however, the zone crosses Ukraine's border with Belarus, and ... | <urn:uuid:61e9b37f-ee80-40d2-9b7f-2fd79444a479> | 3.296875 | 598 | Knowledge Article | Science & Tech. | 39.879059 |
****===The right way to do binary file I/O===****
1) Define your building blocks
Binary files are, at their core, nothing more than a series of bytes. This means that anything larger than a byte (read: nearly everything) needs to be defined in terms of bytes. For most basic types this is simple.
C++ offers a few integr... | <urn:uuid:298682b8-8966-4895-b7c6-96896b504324> | 3.359375 | 1,483 | Personal Blog | Software Dev. | 75.019528 |
Learn about the root of all namespaces—System. Excerpt: The class Object is the root of the inheritance hierarchy in the .NET Framework. Every class in the .NET Framework ultimately derives from this class. If you define a class without specifying any other inheritance, Object is the implied base class. It provides the... | <urn:uuid:b67b74fd-6df5-4794-b903-3ee8680bd6f4> | 3.328125 | 118 | Truncated | Software Dev. | 43.439 |
Can Nanotechnology Fix Global Warming?
Nanotechnology principles and materials are used in a number of scientific disciplines. Scientists in a field called geoengineering are investigating ways to counter the global warming attributed to high levels of carbon dioxide in our atmosphere.
Volcanoes have provided these sci... | <urn:uuid:f7039cae-53bd-4c0a-81fb-bf89b4765755> | 3.859375 | 374 | Knowledge Article | Science & Tech. | 36.131638 |
is a SunOS invention.
A netgroup database is a list of string triples
(hostname, username, domainname)
or other netgroup names.
Any of the elements in a triple can be empty,
which means that anything matches.
The functions described here allow access to the netgroup databases.
defines what database is searched.
call de... | <urn:uuid:2b3d0b03-84d3-48f5-bc7d-26a53797e431> | 2.703125 | 265 | Documentation | Software Dev. | 57.329132 |
March 17, 2010
A Matter of State
Marsh or mudflat? Clear water and underwater grasses or brown turbid water and blooms of harmful algae? Comb jellies or or stinging sea nettles? Each ecological “state” has persisted in the Chesapeake Bay to varying degrees, in varying locations, at various points in history.
As humans,... | <urn:uuid:d80bb3b6-b283-43b8-90e1-9f77d3fad724> | 2.828125 | 910 | Personal Blog | Science & Tech. | 46.255384 |
HAVE the first stars finally revealed themselves? Astronomers in the US are claiming they may have found clusters that contain the first generation of stars to have congealed out of the cooling debris of the big bang. "If we're right, it's an awesome discovery," says Chris Churchill of Pennsylvania State University in ... | <urn:uuid:4e29dda2-1cf4-42d2-bbc2-880d5f13b9de> | 3.875 | 206 | Truncated | Science & Tech. | 50.523841 |
ENVIRONMENTALISTS have long argued that we must preserve natural habitats, but they have done so on mainly aesthetic and moral grounds. Now though, there is growing evidence for a direct link between biodiversity and human health.
Last week, researchers met in Ireland for the first international conference on the subje... | <urn:uuid:0bf6cf53-a0c7-4a40-a160-08e864c0710f> | 3.390625 | 212 | Truncated | Science & Tech. | 43.130048 |
Name: Graham H.
Yesterday I was asked by a student, aged 14, in essence
the question was on the lines of: sex is determined by the presence of
sex chromosomes, although the determining factor varies (i.e. X,Y system
different in mammals compared with birds) there is a factor which
nevertheless determines whether an ind... | <urn:uuid:100a7c69-86f5-4d66-bd21-8a54ed58c489> | 3.515625 | 1,959 | Comment Section | Science & Tech. | 41.946755 |
Good thing the cars in this video are all moving slowly. Add a little more speed, and the scene would be a driver’s worst nightmare. Imagine a car pileup in front of you on a snowy day, your own skidding wheels and, seconds later, the inevitable crash…
Consider—the reason people can control their cars is that it’s very... | <urn:uuid:356dc024-bffc-45dd-85ba-ef324854154c> | 3.53125 | 565 | Truncated | Science & Tech. | 56.594172 |
by Staff Writers
Paris (AFP) Feb 9, 2012
French scientists unveiling new estimates for global warming said on Thursday the 2 C (3.6 F) goal enshrined by the United Nations was "the most optimistic" scenario left for greenhouse-gas emissions.
The estimates, compiled by five scientific institutes, will be handed to the U... | <urn:uuid:312b4ed6-202a-408e-a247-69943308ae39> | 2.859375 | 615 | Truncated | Science & Tech. | 72.02956 |
I’m sure you’ve all heard the news; the OPERA collaboration have taken measurements which seem to suggest that neutrinos emanating from the CERN Super Proton Synchrotron travelled the 455 miles through the Earth’s crust to the Gran Sasso Laboratory at very slightly more than the speed of light in vacuum.
For those not ... | <urn:uuid:c41cd91f-3bc1-4968-926b-339561eedc6e> | 3.75 | 1,247 | Personal Blog | Science & Tech. | 45.15349 |
It is now well established that different human populations may exhibit very different responses to therapeutic drugs. However, to what extent this may have been influenced by our evolutionary history is less well known. In this guest blog, Ripudaman K Bains from University College London outlines why understanding our... | <urn:uuid:35eab837-83cd-4db8-9ffe-df11c67c79c9> | 2.921875 | 396 | Content Listing | Science & Tech. | 21.351429 |
Functional programming in C++. Why would you want to do that and is it possible? In this series of posts I’m going to introduce functional programming concepts and show how they can be implemented in C++. See below for an introduction to the series and the kick-off article on Algebraic Data Types.
Since the dawn of com... | <urn:uuid:b722839f-67e2-4d6c-8308-5a3aca674e78> | 2.734375 | 2,245 | Personal Blog | Software Dev. | 67.018073 |
Active Galactic Nuclei and Supermassive Black Holes
Until recently, the underlying physics of active galactic nuclei (AGN) were somewhat of a mystery to cosmologists. They seemed to produce forces and energies that were so large and in such a small volume that current cosmological theories could not account for them. R... | <urn:uuid:31467c65-29fa-4c74-9582-cee613ddf8bb> | 3.890625 | 2,265 | Knowledge Article | Science & Tech. | 40.81112 |
The study of high temperature extreme environments continues to challenge our understanding of the upper tolerances of microbial life and how life may have originated on earth and possibly other planets. The Tramway Ridge geothermal site on Mt. Erebus, an active volcano in Antarctica, is the most geographically isolate... | <urn:uuid:7bd24da0-5583-4e4e-8319-4a35937ee35b> | 3.1875 | 969 | Academic Writing | Science & Tech. | 20.778441 |
Even in ancient times, people began to suspect that matter, despite its appearance of being continuous, possesses a definite structure on a microscopic level beyond the direct reach of our senses. Democritus came up with the term "atom" to define these little structures.
While the scientists of the late nineteenth cent... | <urn:uuid:aac94758-f161-4415-9459-2754731f1873> | 4.375 | 979 | Knowledge Article | Science & Tech. | 41.586315 |
|Boiling Point: 5800K
Melting Point: 2400K
Electrons Energy Level: 2, 8, 18, 32, 32, 10, 2
Isotopes: 16 + None Stable
Heat of Vaporization: unknown
Heat of Fusion: unknown
Specific Heat: unknown
Atomic Radius: unknown
Ionic Radius: unknown
1s2 2s2p6 3s2p6d10 4s2p6d10f14 5s2p6d10f14 6s2p62 7s2
Rutherfordium (named in ho... | <urn:uuid:6ce34e17-177f-47ef-a06c-ba5037d98765> | 3.5 | 999 | Knowledge Article | Science & Tech. | 50.878294 |
The issues have delayed the return trip to Earth that was due to begin within the first ten days of December, according to previous news reports. New information also suggests the last ditch effort to collect the world's first samples from an asteroid - first described as a success - may not have achieved its goal.
Aft... | <urn:uuid:48621fc8-b551-4cc5-98ac-e82afa325363> | 2.984375 | 664 | Knowledge Article | Science & Tech. | 31.24197 |
|It was the largest hurricane ever recorded in the Atlantic Ocean. The cost of its devastation is still unknown. Pictured above is a movie of Superstorm Sandy taken by the Earth-orbiting GOES-13 satellite over eight days in late October as the hurricane formed, gained strength, advanced across the Caribbean, moved up t... | <urn:uuid:fc68613f-ebed-47bf-bed0-8a4503e7e57e> | 3.515625 | 225 | Knowledge Article | Science & Tech. | 29.537544 |
Newton’s law of cooling
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.
...- T 2), of course, and it is worthwhile noting that the manner in which it does so is not linear; the heat loss increas... | <urn:uuid:141dd161-5a02-4e37-a96d-a1daec2d521d> | 2.9375 | 146 | Truncated | Science & Tech. | 60.667732 |
determine the equation of the line through the points (8,2) and (-4,-1) Please explain and show work
Given that sin alpha = 15/17 and -360 <alpha<360 find all values of alpha to two decimal places. Help Please!
Good point. Thank You.
Necessary for all the countries that took part. Like America, Germany, Great Britain
W... | <urn:uuid:b8591c58-61e5-4326-9a24-a04cd1bbcf97> | 3.09375 | 302 | Comment Section | Science & Tech. | 83.203333 |
© NASA, CXC, M. Weiss.
When cosmic microwave photons pass through a galaxy cluster, about 1 percent of them scatter off of hot electrons in the gas filling the space between galaxies in the cluster. This is called the "Sunyaev-Zel'dovich effect." When the photons scatter, they gain energy from the electrons. Thus, gala... | <urn:uuid:5df3fe3c-a271-48cd-a433-4879d667d665> | 3.90625 | 166 | Knowledge Article | Science & Tech. | 53.12 |
||About Climate Change
Over the past 100 years global mean temperature has increased by 0.7 °C and in Europe by about 1.0 °C. Temperatures are projected to increase further by 1.4 to 5.8°C by 2100, with larger increases in Eastern and Southern Europe. Recent declarations of scientists say the year 2009 will be one of t... | <urn:uuid:5b560e00-e049-48ee-adde-40ea6906929d> | 4.09375 | 1,452 | Knowledge Article | Science & Tech. | 33.297205 |
2 Energy of the Spring-Mass System We know enough to discuss the mechanical energy of the oscillating mass on a spring. Remember Kinetic energy is always K ½ mv2 K ½ m -A sin( t )2 And the potential energy of a spring is U ½ k x2 U ½ k A cos (t ) 2 3 Energy of the Spring-Mass System Add to get E K U constant. ½ m ( A )... | <urn:uuid:5626da52-4070-441f-8e7e-cf9b16b815c6> | 3.71875 | 2,821 | Content Listing | Science & Tech. | 68.951085 |
Mar. 27, 2012 Herpetologists from the California Academy of Sciences and University of Texas at El Paso discovered a single specimen of the Bururi long-fingered frog (Cardioglossa cyaneospila) during a research expedition to Burundi in December 2011. The frog was last seen by scientists in 1949 and was feared to be ext... | <urn:uuid:cf23f307-f7e0-4624-b095-89e9e18faa9b> | 3.625 | 818 | Knowledge Article | Science & Tech. | 33.819057 |
This module generates temporary file names. It is not Unix specific, but it may require some help on non-Unix systems.
Note: the modules does not create temporary files, nor does it automatically remove them when the current process exits or dies.
The module defines a single user-callable function:
The module uses two ... | <urn:uuid:0be237b8-11a4-42a6-ae51-728fde6c633f> | 2.828125 | 290 | Documentation | Software Dev. | 43.184162 |
Recently I identified a counterattack trying to defend the failed anthropogenic global warming (AGW) hypothesis. Claims about Arctic ice melt this summer (2012) are another example. Data and analysis are wrong, but they need to scare a disinterested public.
I know about arctic sea ice from flying ice and anti-submarine... | <urn:uuid:93069442-d9df-4806-ae05-c7d09ec33c35> | 2.71875 | 1,231 | Personal Blog | Science & Tech. | 48.030447 |
Units of measurement
A unit of measurement is a definite magnitude of a physical quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same physical quantity. Any other value of the physical quantity can be expressed as a simple multiple of the unit of measurement.
For... | <urn:uuid:e628ae76-5626-4652-95c2-7da5c897cf69> | 3.9375 | 2,818 | Knowledge Article | Science & Tech. | 39.57509 |
console - console output
Helper methods for printing ANSI formatted output to a terminal and redirecting output to log file(s).
The console(3) module is a built in module available to all programs. It is responsible for printing messages with optional replacement parameters which are highlighted when the message is pri... | <urn:uuid:c880f9bb-37e9-4eec-9387-42eabe265b75> | 3.3125 | 631 | Documentation | Software Dev. | 41.909398 |
There is a special relationship among the measures of the sides of a 45°-45°-90° triangle.
45°-45°-90° triangle is commonly encountered right triangle whose sides are in the proportion . The measures of the sides are x , x , and .
In a 45°-45°-90° triangle, the length of the hypotenuse is times the length of a leg.
To ... | <urn:uuid:adbf301b-7022-4631-ad8f-99acfb50d31c> | 3.546875 | 116 | Knowledge Article | Science & Tech. | 71.542659 |
You might have noticed that we’re slowing down the posts here at Pop Physics HQ. That’s because summer is in full, sweaty swing, the students are busy forgetting everything they’ve learned sitting at their school desks, and I want to make sure this site’s got some momentum when we pick up the pace again in September.
B... | <urn:uuid:7f707f33-0bc7-4187-9013-07d3f3530bce> | 2.890625 | 246 | Truncated | Science & Tech. | 58.24856 |
Explanation: What is that green thing? A volunteer sky enthusiast surfing through online Galaxy Zoo images has discovered something really strange. The mystery object is unusually green, not of any clear galaxy type, and situated below relatively normal looking spiral galaxy IC 2497. Dutch schoolteacher Hanny van Arkel... | <urn:uuid:4f02bc54-7ad7-407c-be13-a24ff4a24958> | 3.59375 | 233 | Personal Blog | Science & Tech. | 39.387222 |
Short-Term Heating Helps Corals Survive Greater Long-Term Warming
Oliver, T.A. and Palumbi, S.R. 2011. Do fluctuating temperature environments elevate coral thermal tolerance? Coral Reefs 30: 429-440.
Taking advantage of back-reef pools in American Samoa that differ in diurnal thermal variation, Oliver and Palumbi expe... | <urn:uuid:1305fb70-2cdc-45c5-9ba9-f8a7af2dc304> | 3.0625 | 788 | Academic Writing | Science & Tech. | 37.868954 |
Other Popular Articles
Unusual Pulsar Or Alien Signals?
The pulse timing of this object is considered unusual.
What kind of phenomenon is related to this object?
It is the first time this kind of phenomenon has been observed by astronomers.
The "Cloaked" Star Was Difficult To Find
An object obscured by dust, and buried... | <urn:uuid:282c9f93-e489-453d-ae53-ef087b59d094> | 3.0625 | 673 | Content Listing | Science & Tech. | 42.30438 |
Building mod_perl from source requires a machine with basic development tools. In particular, you will need an ANSI-compliant C compiler (such as gcc) and the make utility. All standard Unix-like distributions include these tools. If a required tool is not already installed, you can install it with the package manager ... | <urn:uuid:f2524658-eb11-4e1d-bccb-8780579194e5> | 3.203125 | 843 | Tutorial | Software Dev. | 62.60713 |
Water companies in the south and east of England are taking unprecedented emergency measures to cope with drought this summer. Their plans include piping the cleaner effluent from sewage treatment plants back upstream to refill their shrinking rivers.
With ground water at an unusually low level, the water companies' ho... | <urn:uuid:21ff886e-006d-4d57-8668-84e501468526> | 3.421875 | 200 | Truncated | Science & Tech. | 54.339671 |
1. Let y = 3x2 + 4x - 5
Find the y-intercept, x-intercepts, the coordinates of the vertex, and sketch the graph.
Solve 3x2 + 4x - 5 > 0 for x.
2. Solve for x
3. Graph y = 1.1x
4. Change to logarithmic form ex = a
5. Change to exponential form t = log x
7. Express as a single log 3logb x - logb y + 4 logb z
8. Solve for... | <urn:uuid:da579d63-66ba-4852-883c-6fae5edff5dc> | 3.359375 | 261 | Content Listing | Science & Tech. | 109.835722 |
Test Case Reduction
A general guide to test case reduction
The basic idea behind bug reduction is to take a page that demonstrates a problem and remove as much content as possible while still reproducing the original problem.
Why is this needed?
A reduced test case can help identify the central problem on the page by e... | <urn:uuid:e8b24f30-253f-48e4-a9af-89e318414b1d> | 3.046875 | 954 | Tutorial | Software Dev. | 53.808351 |
Cosmic timeline 10
Matter domination began about 70,000 years after the Big Bang.
In the photon epoch which began 10 seconds after the Big Bang photons are still interacting frequently with charged protons, electrons and (eventually) nuclei, and continue to do so for the next 300,000 years. Then between 3 minutes and 2... | <urn:uuid:849a473a-9087-405f-b4b5-6b7f110b50ce> | 3.46875 | 1,085 | Knowledge Article | Science & Tech. | 29.846247 |
As the Universe evolved from its early, hot, dense beginnings (the "Big Bang") to its present, cold, dilute state, it passed through a brief epoch when the temperature (average thermal energy) and density of its nucleon component were such that nuclear reactions building complex nuclei could occur. Because the nucleon ... | <urn:uuid:37eb43dc-f685-489a-b6e6-a0130e7cd4bd> | 3.09375 | 2,641 | Academic Writing | Science & Tech. | 38.039617 |
How/why can the cosmic background radiation measurements tell us anything about the curvature of the universe?
So I've read the Wikipedia articles on WMAP and CMB in an attempt to try to understand how scientists are able to deduce the curvature of the universe from the measurements of the CMB. The Wiki ...
I know that... | <urn:uuid:7b0fc822-009c-4735-8a3f-8b5a3c53bafd> | 2.890625 | 109 | Q&A Forum | Science & Tech. | 53.512855 |
SOLUTION: Sketch the graph of the function y = 3 - 3x2. Label all intercepts.
Quadratic Equations and Parabolas
-> SOLUTION: Sketch the graph of the function y = 3 - 3x2. Label all intercepts.
You enter your algebra equation or inequality -
solves it step-by-step while providing clear explanations. Free on-line demo
so... | <urn:uuid:4ced0879-7b36-4e44-a3ac-2ecea229adb6> | 3.484375 | 329 | Tutorial | Science & Tech. | 68.657222 |
Science Fair Project Encyclopedia
Proteomics is the large-scale study of proteins, particularly their structures and functions. This term was coined to make an analogy with genomics, and while it is often viewed as the "next step", proteomics is much more complicated than genomics. Most importantly, while the genome is... | <urn:uuid:5b3f8d55-293a-4b95-b2d3-aea8d0ace1fc> | 3.46875 | 1,094 | Knowledge Article | Science & Tech. | 24.447348 |
How is passive current propagated?
G K GRAY
gord at homostudy.win-uk.net
Thu Oct 31 04:18:44 EST 1996
In article <leipzjn9-301096000943 at rts0107.ppp.wfu.edu>, Jeremy Leipzig (leipzjn9 at wfu.edu) writes:
>Does anyone know exactly how passive current spreads down a dendrite or
>myelinated axon. One of my professors sa... | <urn:uuid:780b0076-e0c3-460a-9fa3-30848bb1fcaf> | 2.828125 | 522 | Comment Section | Science & Tech. | 52.663549 |