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What would happen if there were no longer any trees? Well, we could just make our own. Via AOL News:
It’s not nice to fool Mother Nature. Or is it? If you’re not getting enough air, you might want to spend time sitting under a newly designed artificial tree that converts carbon dioxide into breathable oxygen.
In the mo... | <urn:uuid:53352ebc-633d-43a8-81ec-d45a0a3779a3> | 3.484375 | 178 | Truncated | Science & Tech. | 46.438043 |
Saffir/Simpson Hurricane Scale
For Nationwide Doppler Radars check out Doppler Radars
All hurricanes are dangerous, but some are more so than others. The storm surge, wind and other factors determine the hurricane's destructive power. To make comparisons easier, hurricane forecasters use a disaster potential scale whic... | <urn:uuid:4bc0a934-c0e9-4fe1-977d-cff180b2bdeb> | 2.890625 | 470 | Knowledge Article | Science & Tech. | 43.866027 |
The sun gives off radio waves at many different wavelengths. Different layers of the sun tend to give off waves a different wavelengths, so we can observe individual layers by focusing on certain wavelengths. This allows us to compare different phenomena on different layers of the sun to find patterns and connections. ... | <urn:uuid:b16abb95-c464-45a3-8ada-873b54132a35> | 4 | 940 | Knowledge Article | Science & Tech. | 45.126668 |
[...] read also says how many bytes of the file were returned, so end of file is assumed when a read says "zero bytes are being returned." [...]
When a program reads from your terminal, each input line is given to the program by the kernel only when you type its newline (i.e, press RETURN). [...]
Now try something diff... | <urn:uuid:03272e6d-1df5-4300-8a5e-0fbdb5cd7614> | 3.046875 | 325 | Comment Section | Software Dev. | 74.774825 |
open - open for reading or writing
Open opens the file name for reading (if mode is 0), writing (if mode
is 1) or for both reading and writing (if mode is 2). Name is the
address of a string of ASCII characters representing a path name, ter-
minated by a null character.
The file is positioned at the beginning (byte 0).... | <urn:uuid:527142d8-8a9f-40ac-a3aa-068619c8ada9> | 3.546875 | 199 | Documentation | Software Dev. | 59.925 |
Archive for May, 2008
Question: How Do I Do An Science Fair Experiment On This?
I’m doing a science fair project on ‘which places have more bacteria on their bathroom door handles”
I was going to test my school
A shopping mall
Restaurant and my house
Now I don’t know how to do this please help!?
Thanks Michael Dervin y... | <urn:uuid:e99f5d88-3e68-4bd6-a5f5-57f36c2de4b2> | 2.78125 | 713 | Content Listing | Science & Tech. | 58.754454 |
Because your model's data management requirements, such as the agent's memory, is more complicated than can be reasonably managed with lists, and you don't want or don't have an external database extension to work from.
You can use breeds of turtles to create both flat and relational databases. NetLogo's built-in WITH ... | <urn:uuid:18fe8c2b-fadb-4242-9d66-1205b0fa4e01> | 2.828125 | 649 | Documentation | Software Dev. | 34.768182 |
Comment: 08:31 - 09:35 (01:04)
Source: Annenberg/CPB Resources - Earth Revealed - 9. Earthquakes
Keywords: "James Sadd", earthquake, seismograph, China, "initial ground motion", vibration, "duplex pendulum", "San Francisco Earthquake", strength, duration, epicenter
Our transcription: In the second century the Chinese b... | <urn:uuid:b58fc4ab-f927-46ae-84e5-c6f4d25cc755> | 3.578125 | 308 | Knowledge Article | Science & Tech. | 34.653051 |
restricted stopping power
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.
study of particle beam decay
...screening, the relativistic stopping power tends to infinity as the electron velocity ap... | <urn:uuid:f9125556-0d09-415c-8fc4-8691ea9fc93e> | 2.796875 | 146 | Knowledge Article | Science & Tech. | 54.309674 |
Assuming that the only significant contribution to the angular momentum comes from the spinning of the flywheel about its center, what is the angular momentum vector about the pivot at ? Specify the components of with respect to the axes shown in the diagram. Write the components in order , ,...
A long, straight wire c... | <urn:uuid:1e98f47a-b1cc-491b-8bf9-fbd6814fb9b0> | 3.171875 | 742 | Q&A Forum | Science & Tech. | 66.843808 |
O.G, on Aug 20 2009, 02:30, said:
What would happen if they found that pi wasn't irrational? What would they do with their time then?
Well seeing as how countless proofs have been giving that show Pi to be irrational (google search) we would have o assume one of two things - we have errors in our methods for calculatin... | <urn:uuid:729ea801-2cd3-4fd2-843a-e160512ab397> | 3 | 215 | Comment Section | Science & Tech. | 63.181869 |
Report an inappropriate comment
Tue Sep 25 19:48:50 BST 2012 by Eric Kvaalen
But you've missed the crucial point. It's not a question of when the person observes the three fireworks. The person is supposed to CALCULATE when they went off, by subtracting the time that it took for the light to get to him (we assume he ha... | <urn:uuid:c56a23b8-7204-4d61-b68d-57cf2f605935> | 2.8125 | 175 | Comment Section | Science & Tech. | 54.445274 |
Search our database of handpicked sites
Looking for a great physics site? We've tracked down the very best and checked them for accuracy. Just fill out the fields below and we'll do the rest.
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We found 16 results on physics.org and 98 results in our database of sites
97 are Websites,
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and ... | <urn:uuid:67582d6c-2d1f-47ba-a52a-8e6dde841563> | 2.96875 | 394 | Content Listing | Science & Tech. | 53.134929 |
There are two kinds of tags. Those tags which require an ending, are called range tags. They are called "range tags" because they cover a range of text. Examples of range tags are <HTML>, <HEAD>, <BODY>, <TITLE>. Range tags require ending tags (</HTML>, </HEAD>, </BODY>, </TITLE>)
<HTML> <HEAD> <TITLE>My Home Page</TIT... | <urn:uuid:31be3906-dd6f-4d53-aaba-e7806fb774eb> | 3.0625 | 144 | Knowledge Article | Software Dev. | 64.885199 |
In this illustration we will inform you about the use and implementation of <h2> tag in html5. The <h2> tag is used to specify the header of level2. HTML5 have 6 levels of header (<h1> to <h6>). The importance of header is that it is decreases from h1 to h6. The each header is specific to the font and size of the text.... | <urn:uuid:b04e5711-ce39-4dd2-8ef2-00c2838a4963> | 3.53125 | 224 | Documentation | Software Dev. | 74.316992 |
How does the greenhouse effect work, and what is its relationship to the warming trend? Using animations adapted from NASA, this video produced by ThinkTV demonstrates how naturally-produced greenhouse gases trap the Sun's heat in the lower atmosphere. The greenhouse effect is essential to life on Earth. But scientists... | <urn:uuid:eaa84953-2c05-45eb-89e9-b6306ea27da2> | 4.40625 | 729 | Knowledge Article | Science & Tech. | 36.207546 |
QUESTION: Do insects experience pain if you mistreat them? Will they know pain in any way relative to a human's experience of pain?
– Daniel Johnson
ANSWER: Two quotations from recent scientific papers summarize the lack of consensus on this matter:
“Of course, invertebrate organisms do not experience pain per se.” (Na... | <urn:uuid:591498d0-cd1d-48e7-8f5b-d91c3456f171> | 3.296875 | 631 | Q&A Forum | Science & Tech. | 42.087295 |
Changing Planet: Survival of Trees
Trees contain some of nature's most accurate evidence of the past. Their growth layers, appearing as rings in the cross section of the tree trunk, record evidence of floods, droughts, insect attacks, lightning strikes, earthquakes and even changes of carbon dioxide levels that occurre... | <urn:uuid:8c838843-1356-4bb4-b1b5-0817daa18f0f> | 3.84375 | 585 | Tutorial | Science & Tech. | 54.941388 |
While it's recommended that you learn more about HTML and CSS via other sources online, here is a brief introductory guide to some basic funtions in HTML.
Like grammar is to writing, the HTML syntax lays out the ground rules that makes the whole thing work. It's a lot simpler than grammar rules though!
Rule #1: There a... | <urn:uuid:2206530a-2bd4-4180-881a-cb0b5412d0f8> | 3.8125 | 1,384 | Tutorial | Software Dev. | 75.840254 |
Scientific name: Zygaena filipendulae
June - August. All over Britain, mainly coastal in Scotland. Medium-sized black moth with six red, occasionally yellow, spots. Frequents flowery grassland, woodland rides and sandhills.
The only British burnet moth with six red spots on each forewing, although care must be taken wi... | <urn:uuid:802be353-f495-412a-aa48-a6265f4ab596> | 3.34375 | 292 | Knowledge Article | Science & Tech. | 40.27 |
SPECIES CODE: E057 V01
Listed Threatened with Critical Habitat on September 27, 1985 (50 FR 39117 39123). Recovery Plan completed on April 27, 1998.
Note: All descriptions are abstracted and/or excerpted from the Federal Register (1985) and the Recovery Plan (1988).
The Warner sucker is a member of the Catostomidae
fam... | <urn:uuid:01abe40d-fcf9-4c6a-bb47-7e19f281406c> | 2.953125 | 734 | Knowledge Article | Science & Tech. | 44.115489 |
hi, is this question wrong or am i wrong?
A crate of mass 100 kg rests on a rough horizontal factory floor. The coefficient of friction between the floor and the crate is 1/7. A storeman applies a horizontal force of F newtons to the crate in order to move it to a different location.
Gravity is 9.8 ms^-2
a) Show that i... | <urn:uuid:82a420da-5f2b-4f85-9768-493f08584fe2> | 2.953125 | 140 | Q&A Forum | Science & Tech. | 99.955336 |
Both research groups published their findings in the October 14, 2004, issue of the journal Nature. Howard Hughes Medical Institute researcher Michael Rosbash at Brandeis University led one group; Franois Rouyer at the Centre National de la Recherche Scientifique in France led the second group. Graduate students Dan St... | <urn:uuid:25d6e385-559e-478b-ba51-8045bf599bbf> | 3.0625 | 376 | Knowledge Article | Science & Tech. | 31.632631 |
actually main function is a user defined function for the C
compiler developer.... but it is a built in or predefined
function according to the users using that compiler.... why
it is called as a predefined function because , the
prototype has already been defined in the compiler itself
we the users can't change the me... | <urn:uuid:7733faba-7b83-4955-bdfd-c9d58ac76888> | 3.734375 | 631 | Q&A Forum | Software Dev. | 72.998938 |
Glenn Theodore Seaborg
Glenn T. Seaborg in 1942, adjusting a Geiger counter. Courtesy Ernest Orlando Lawrence Berkeley National Laboratory.
Glenn Theodore Seaborg (1912–1999) was involved in identifying nine transuranium elements (94 through 102) and served as chairman of the U.S. Atomic Energy Commission (AEC) from 19... | <urn:uuid:108134af-30b1-488d-b1b8-497a837a174d> | 3.21875 | 646 | Knowledge Article | Science & Tech. | 41.210519 |
Assignment for 05-830, User Interface Software, Spring, 1997.
This benchmark is representative of interfaces used for the creation of and editing of images stored as bitmaps. It will allow the user to draw lines, paint lines with a square brush, erase portions of the bitmap, and draw roundtangles, in a fixed drawing wi... | <urn:uuid:646522d1-7d0b-412f-801a-98ec77eb756f> | 2.75 | 1,532 | Tutorial | Software Dev. | 50.327215 |
SEARCHING FOR A `SUBWAY TO THE STARS'
In an article published March 15, 1995 in the scientific journal Physical Review D, physicists John G. Cramer, Gregory Benford, Geoffrey A. Landis, Robert Forward, Matt Visser and Michael Morris argue that the search for dark matter in the universe could be expanded to include exot... | <urn:uuid:568464e6-a691-42d8-8bb8-99e8a8406bce> | 3.125 | 1,221 | Knowledge Article | Science & Tech. | 36.911626 |
error stops execution and displays an error message.
This is thrown when the user calls error. The String is the argument given to error.
C-specific Marshalling support: Handling of C "errno" error codes.
Routines for testing return values and raising a userError exception in case of values indicating an error state.
S... | <urn:uuid:2c505041-cffc-4688-a593-ba3e8bb7b51e> | 3.21875 | 546 | Documentation | Software Dev. | 47.407677 |
|-- You specialize in "detonation." Could you explain that to us? How does it differ from ordinary combustion?
Matsuo: We are most unlikely to experience detonation in everyday life, though it could occur in a gas explosion under particular circumstances. Ordinary flames spread according to what physicists call the "di... | <urn:uuid:eb664f6b-e2db-4b8a-bb91-05e8f24724a1> | 3.46875 | 363 | Audio Transcript | Science & Tech. | 42.529989 |
For creating devices in the device directory see:
This is a new type of device interface to Linux. It's optional starting with kernel 2.4. It's more efficient than the conventional interface and makes it easy to deal with a huge number of devices. The device names have all changed as well. But there's an option to cont... | <urn:uuid:529d4ed5-db6f-49fa-9f6b-b49f1b4a77de> | 3.046875 | 1,176 | Tutorial | Software Dev. | 74.614914 |
refernece: Feltes und Neuhöfer Evelyn.Feltes@t-online.de
The name Death's-head Hawkmoth refers to one of the three species (A. atropos, A. styx and A. lachesis) of moth in the genus Acherontia. The former species is primarily found in Europe, the latter two are Asian. These moths are easily distinguishable by the vague... | <urn:uuid:cad4bcd2-2794-40a6-a480-dcba8c704e00> | 2.984375 | 263 | Knowledge Article | Science & Tech. | 43.364448 |
Grass carp are freshwater fish that feed primarily on aquatic plants. In the 1970s, they were introduced to a number of lakes and ponds in Florida as part of an experimental effort to control aquatic weeds, particularly the exotic plant Hydrilla (Hydrilla verticulata). The goal was to use these herbivorous fish to "gra... | <urn:uuid:183d4345-14c7-4583-9e3a-9b455108b103> | 2.78125 | 702 | Knowledge Article | Science & Tech. | 34.988484 |
Tropical Cyclone Report (TCR); Tropical Storm Aletta
Tropical Cyclone Report
Tropical Storm Aletta
14 May-19 May 2012
Aletta was a rare out of season tropical storm that formed about a day before the official start of the eastern North Pacific hurricane season. Since reliable satellite measurements were taken in 1966, ... | <urn:uuid:f57e2902-6123-4bc7-bce3-30aeddc77565> | 3.125 | 1,044 | Knowledge Article | Science & Tech. | 31.811829 |
USGS Multimedia Gallery
Title: Measuring Sound Speed with an XBT
Description: A U.S. Coast Guard member is preparing to launch an Expendable Bathythermograph (XBT) to help calculate the speed of sound in the ocean. The launcher sends a probe into the water to measure depth and temperature variation below the ship. Ther... | <urn:uuid:8f626807-c1b0-42be-b910-4f80a1030afa> | 3.703125 | 302 | Truncated | Science & Tech. | 53.76819 |
Rinaldo J. Brun
The paths of cloud droplets into two engine inlets have been calculated for a wide range of meteorological and flight conditions. The amount of water in droplet form ingested by the inlets and the amount and distribution of water impinging on the inlet walls are obtained from these droplet-trajectory ca... | <urn:uuid:6c4489f9-4b82-4820-a92b-4a8d68664497> | 3.453125 | 205 | Academic Writing | Science & Tech. | 41.518428 |
What have all these programs and expeditions taught us about the ocean?
Let's look at some milestones in our ever increasing understanding of the
oceans beginning with the first scientific investigations of the 17th
century. Initially progress was slow. First came very simple observations
of far reaching importance by ... | <urn:uuid:15dd95fc-d902-4e75-8a9c-13e65a90fb71> | 3.421875 | 1,167 | Knowledge Article | Science & Tech. | 30.761458 |
The CMB we see is the state of the universe when it became transparent, 380000 years after the Big Bang. Our lines of sight away from us can't see any farther than this. Think of the Sun, which is a big ball of gas, but appears to have a surface because that is where the accumulated gas along the line of sight to the c... | <urn:uuid:5af27dc5-542d-4bc9-bfbd-b57abc2c7d35> | 4.0625 | 409 | Q&A Forum | Science & Tech. | 38.305155 |
|Above, Salvinia molesta infesting a body of water. Photo source: Wikipedia. Below, a drop of water sits atop eggbeater-shaped hairs on a Salvinia molesta leaf. Image courtesy of Ohio State University.|
|Above, the tips of the hairs on a Salvina molesta leaf stick to water with enough force to keep this droplet from ro... | <urn:uuid:7d4f991c-c776-4360-b6e5-fa2392be3260> | 3.53125 | 175 | Truncated | Science & Tech. | 39.305699 |
One of aluminum's weaknesses
is it's lack of strength is its pure form. To get around this and preserve aluminum's low density and lightweight other elements are added to the metal to "pin" dislocations reducing ductility
but increasing strength. By this method some aluminum alloys can be as strong as steel. Adding dif... | <urn:uuid:21b6fb63-f39a-4ad5-ba47-78436dffae74> | 4.03125 | 492 | Knowledge Article | Science & Tech. | 33.662 |
Pascal - Identifiers
Identifiers are used in programming languages to "identify" or name a keyword, variable, constant, function, procedure, type, or program.
Identifiers in pascal can have up to 255 significant characters, meaning that the first 255 characters of each identifier must be unique. Identifiers in pascal m... | <urn:uuid:c26dda06-13c1-44a5-accf-c24a98a03537> | 4.03125 | 171 | Documentation | Software Dev. | 27.6925 |
Science Fair Project Encyclopedia
Friedrich Wilhelm Bessel (July 22, 1784 – March 17, 1846) was a German mathematician, astronomer, and systematizer of the Bessel functions (which, despite their name, were discovered by Daniel Bernoulli). He was born in Minden, Westphalia and died of cancer in Königsberg (now Kaliningr... | <urn:uuid:8283be0b-4a2d-43b0-a797-4da27eca9666> | 3.59375 | 696 | Knowledge Article | Science & Tech. | 37.855181 |
In recent years,
over fifty extrasolar
have been detected
via various methods
which we'll discuss
What is an
It refers to a planet that resides outside our solar system. Now,
this might seem pretty obvious, but some of the extra-solar planets
that have been detected have been extremely large; planets that have
been man... | <urn:uuid:985edb26-5a11-4469-a1b1-8ee8c47f8640> | 3.796875 | 2,489 | Knowledge Article | Science & Tech. | 44.660988 |
Land snails are
some of the most brilliantly colored and patterned terrestrial
gastropod mollusks, especially those found in the
tropics. The Florida Everglades is the home to the boldly
Liguus fasciatus which have diversified into almost 60
color forms. Destruction of the snail's habitat and zealous
collection of the ... | <urn:uuid:00c9d8d5-6891-428f-a57e-62cf4edf02d8> | 3.4375 | 336 | Knowledge Article | Science & Tech. | 46.013574 |
Earth Institute News
about Manhattan Earthquake 01/17/01
This is a seismogram of the earthquake of January 17, 2001 recorded at the Lamont-Doherty Earth Observatory in Palisades NY.
Time proceeds from the left to the right with first quiet before the earthquake; then the arrival of the p-wave followed by an increased a... | <urn:uuid:46b93ba1-0ce5-4c46-a70d-a146790702a9> | 3.421875 | 250 | Knowledge Article | Science & Tech. | 34.596176 |
sunspots, dark, usually irregularly shaped spots on the sun's surface that are actually solar magnetic storms. The Chinese recorded dark features on the sun seen with the naked eye in 28 B.C. Other observers including Kepler suspected that these events might be transits of Mercury or Venus. Galileo observed them system... | <urn:uuid:8c6e00d6-c08b-4466-9146-f2a6271b417f> | 4.40625 | 637 | Knowledge Article | Science & Tech. | 40.988177 |
Ben Franklin's Lightning Rod
What would you think if you saw a man chasing a thunder and lightning storm on horseback? You would probably wonder what on Earth he was trying to do. Well, if you lived in the 1700s and knew Benjamin Franklin, this is just what you might see during a terrible storm. Ben was fascinated by s... | <urn:uuid:21c00e71-5027-47bc-8ad4-8c06c0dfb1d2> | 3.171875 | 1,179 | Knowledge Article | Science & Tech. | 52.992912 |
Linux Shell Scripting Tutorial (LSST) v1.05r3
Chapter 1: Introduction : Linux Shell basics
Shell script defined as:
"Shell Script is series of command written in plain text file. Shell script is just like batch file is MS-DOS but have more power than the MS-DOS batch file."
|How to use Shell|| |
Why to Write Shell Scri... | <urn:uuid:f4f3015f-569b-4664-84e0-fefcadf7278e> | 2.796875 | 82 | Truncated | Software Dev. | 81.055461 |
Carbon Capture and Storage
Global warming is one of the biggest issues of our time and it is largely the consequence of growing concentrations of greenhouse gases, particularly CO2, in the atmosphere.
In 2005 there has been significant media coverage of carbon capture and storage starting with the G8 meeting in July, t... | <urn:uuid:57af8aa4-5e5b-4ecd-9bcd-5f6b241116b7> | 3.53125 | 1,031 | Knowledge Article | Science & Tech. | 25.984509 |
Some Lines From The Presentation
Nitrogen is a very interesting element, and it is used for many purposes. The word "Nitrogen" means, "giving rise to niter." Niter is a substance rich in Nitrogen, and was discovered before Nitrogen was. Nitrogen is the seventh element on the Periodic Table. Its symbol on the Periodic T... | <urn:uuid:308c5811-0ffe-40a7-8013-10eb4896fe32> | 3.46875 | 672 | Knowledge Article | Science & Tech. | 39.450631 |
10 Science Experiments That Looked Like the End of the World
It’s official: The Large Hadron Collider helped to find a new particle, and it didn’t turn the world inside out. Everybody relax! But history is full of strange experiments that people predicted might bring about the end of the human race… and in some cases, ... | <urn:uuid:c0b0b82a-e49b-45df-a267-8da3eb22b717> | 3.625 | 1,489 | Listicle | Science & Tech. | 35.532164 |
Rates of Quaternary Ice Movement Across the Vestfold Hills from Exposure Age Dating.Entry ID: ASAC_831
Abstract: The data set consist of in-situ cosmogenic Be-10 and Al-26 surface exposure ages for subglacial erratics in the Vestfold Hills.
Samples were collected during the 1994/95 summer season and processed at the re... | <urn:uuid:bad76d9e-47e4-40b9-9e05-954116812c55> | 3.3125 | 1,255 | Academic Writing | Science & Tech. | 36.94446 |
Many of the subroutines come in families which differ only in the datatype of the associated parameter(s) . The datatype of these subroutines is indicated by the last letter of the subroutine name (e.g., 'j' in 'ftpkyj') as follows:
x - bit b - character*1 (unsigned byte) i - short integer (I*2) j - integer (I*4, 32-bi... | <urn:uuid:3188968b-3b5f-483e-a273-767515f22fab> | 3.390625 | 595 | Documentation | Software Dev. | 51.722218 |
Stellar Death of High Mass Stars
When stars go supernova
While most stars become planetary nebula at the end of their lives, stars of more than 8 solar masses when they became main-sequence stars will die in fiery explosions.
Other types of supernova
An accreting white dwarf in a close binary system can also become a s... | <urn:uuid:2a7b395e-9fb6-4a50-87be-4d73bd17ae6a> | 3.4375 | 282 | Knowledge Article | Science & Tech. | 32.300065 |
If you don’t wake up every single day and think how extraordinarily lucky you are, watch this simulation of a 500km wide asteroid hitting our home …
Flinging pebbles at an asteroid sounds like a fruitless task, but a new calculation shows that this could deflect an Earthbound rock.
It takes surprisingly little force to... | <urn:uuid:c7629289-5852-4acc-85bd-fec2dc879d35> | 3.8125 | 249 | Personal Blog | Science & Tech. | 41.568295 |
Beginning in January 2013, unusually high numbers of stranded California sea lion pups have been observed on the Southern California coast. Marine mammals naturally come ashore along our beaches if they are sick, wounded, or injured. This year, pups have been washing up with obvious signs of emaciation, dehydration, an... | <urn:uuid:048d935d-0895-40ce-b6d9-e561909e915a> | 3.359375 | 2,574 | Content Listing | Science & Tech. | 43.413576 |
All concatenative code is built on top of a concatenative and compositional language called Scat with extensible syntax and semantics. The term concatenative refers to program syntax being build from concatenation of subprogram names. The term compositional refers to program semantics where concatenation is interpreted... | <urn:uuid:b4627f0d-6a53-4a41-9fa4-b01748636904> | 2.96875 | 691 | Documentation | Software Dev. | 36.470027 |
All of this has happened before, and it will all happen again. –Peter Pan
Much like any new venture where the outcome is uncertain, there are a lot of fears surrounding the LHC. And I know, because it occasionally shows up in my comment threads, in my inbox, or in my office.
Could it form a black hole and destroy Earth... | <urn:uuid:52be7d0e-4526-431e-ae8f-59d4fb79a847> | 2.796875 | 557 | Personal Blog | Science & Tech. | 59.439585 |
What’s in a Name? (developed by the Northwest Fisheries Science Center)
The spirit of a ship. . . a historical tradition
Traditionally, NOAA fisheries vessels have been named for historical figures (i.e., deceased for five years or more) who have made significant contributions to fishery science, development, managemen... | <urn:uuid:b0a837b9-50fc-4a30-9c8d-d56a61c9f6e0> | 3.1875 | 503 | Knowledge Article | Science & Tech. | 31.77743 |
Lise Meitner with Otto Hahn. Meitner discovered nuclear fission.
In 1939 an English physicist received a cable from Sweden, and it seemed to make no sense. The clouds of WW-II were gathering over Europe, and here came a chatty cable about somebody he'd never heard of named Maud Ray Kent. Now who was Maud Ray Kent!
But ... | <urn:uuid:cccd2183-ef4a-48d5-82f9-2009926bdca0> | 3.734375 | 368 | Nonfiction Writing | Science & Tech. | 62.922609 |
Science Fair Project Encyclopedia
A scale factor is a number which scales some quantity. For example, in the case of 2 meters, the number 2 scales the standard meter quantity. In other words the distance 2 meters is twice the length of the meter standard. In essence the scale factor is 2.
There is also a scale factor f... | <urn:uuid:e2bae86b-c580-4b09-a597-891d14974edf> | 3.515625 | 104 | Knowledge Article | Science & Tech. | 54.909155 |
Embedded clusters are stellar clusters that are partially or fully
embedded in interstellar gas and dust within molecular clouds. They
consist of extremely young, recently formed or forming stars.
Because they are immersed in significant amounts of interstellar
dust they are typically invisible at optical wavelengths. ... | <urn:uuid:e7062552-b035-45b6-a430-2d418a6d1a29> | 3.65625 | 463 | Knowledge Article | Science & Tech. | 35.347251 |
Within the lowest kilometer above the sea surface the easterly flow is particularly steady and has a distinct equatorward component. Hence, the prevailing winds in the tropical North Atlantic and North Pacific are from the northeast, and those in the tropical South Atlantic and South Pacific are from the southeast. In ... | <urn:uuid:2bafa3ce-d80f-4da2-a737-e9841c85f008> | 3.75 | 376 | Knowledge Article | Science & Tech. | 36.539086 |
In March, astronomers at Rutgers University studying the supernova remnant Tycho revealed a surprise. Using the Chandra orbiting x-ray telescope, they found unexpectedly structured patterns within Tycho. Normally supernova remnants are chaotic, says Kristoffer Eriksen, who worked on the project. The scientists had anti... | <urn:uuid:171eecaa-e4e2-42dc-8ef4-f5d8e37ee7df> | 3.390625 | 205 | Truncated | Science & Tech. | 35.671534 |
WHY ARE WE INTERESTED IN INTERIOR LEAST TERNS AND PIPING PLOVERS?
Interior Least Tern and Piping Plover populations have declined due to:
- broad-scale alteration of natural river systems
- loss of midstream river nesting habitat
- loss of overwintering habitat
- hunting for the restaurant and millinery trades in the l... | <urn:uuid:9b298e98-3b05-48e0-a808-c73e45065d40> | 3.03125 | 433 | Knowledge Article | Science & Tech. | 30.685 |
How Many Leaves Are On This Tree?
Many of my questions come from my kids. As we were cleaning up leaves, we pushed all the leaves from one tree into a corner. My daughter asked me to estimate the number of leaves in the pile (yes, she is going to be a great blogger one day). Are there a million leaves in the pile? My o... | <urn:uuid:d3c4a419-efb9-4bea-b440-b59f3696a6df> | 3.703125 | 736 | Personal Blog | Science & Tech. | 74.74628 |
BACKGROUND: A chemical engineer at Drexel University has developed a handheld, simple to use sensor that can quickly spot contamination by deadly strains of the E coli or by listeria, helping food producers find out whether their products are have dangerous amounts of E coli or Listeria before they are shipped out to c... | <urn:uuid:ddfb9d41-353e-4897-980b-c4e9738068bc> | 3.65625 | 565 | Knowledge Article | Science & Tech. | 42.796334 |
Now we’re cooking.
Operation of a new Spanish solar thermal plant just kicked into high gear, taking the title as the world’s largest commercial tower-type collector.
The remarkable solar collection facility with the rather unremarkable name – the PS20 – passed its initial trial run with flying colors, surpassing expec... | <urn:uuid:7c0643fd-268c-425a-9b0d-24dc16d17a46> | 2.875 | 796 | Personal Blog | Science & Tech. | 52.922573 |
program DemoFiles; var F:TEXT; begin assign(f,'FileName.TXT'); rewrite(f); writeln(f,'Hello there'); close(f); end.The file variable "f" is used in this Pascal example in much the same way that a file handle is used in an assembly language program - to gain access to the file that was created in the program.
Function (... | <urn:uuid:b24f0371-1f8a-426c-b8cf-fa0a366feaab> | 3.5625 | 3,967 | Documentation | Software Dev. | 55.142861 |
The USGS Water Science School
This picture shows a common sight seen during fair-weather days where there are mountain and ridges in the landscape. Maybe you've wondered why big, puffy clouds seem to like to hang out near mountain ridges and above mountain peaks. The mountains are not putting out more humid air than ot... | <urn:uuid:1bdc40df-d288-4b71-820b-72b8690b836a> | 4.40625 | 256 | Knowledge Article | Science & Tech. | 42.233571 |
DI'ATOMA'CEIE (Xeo-Lat. nom. pl. from Siaroa4, tom(• severance. cliofrio to in, to cut throu•h., from Sid, din. through 71/Avfip, tentio. in, to cot 1. At) immense group of unicellular algae, estimated at 10,000 species, The cells are solitary or united in various ways into colonies that are frequently elaborately bran... | <urn:uuid:be241955-1b8b-4907-8808-4cd9cd125226> | 2.796875 | 732 | Knowledge Article | Science & Tech. | 46.041729 |
Biodiversity 16 June 2010 * Biodiversity.ppt Biodiversity 16 June 2010 Biodiversity.ppt * Variety of living things, number of kinds Ecological diversity different ...
Objectives. Define and describe “biodiversity” Explain how biodiversity is used as a measure of the health of an ecosystem. Connect how increased biodive... | <urn:uuid:14204394-473a-40a0-84b3-192f7ebcdadd> | 3.265625 | 877 | Content Listing | Science & Tech. | 24.005007 |
The formation of tactoids from thixotropic sols, of Schiller layers from iron‐oxide sols, the separation of tobacco virus solutions and bentonite sols into two liquid layers and the crystallization of proteins are regarded as examples of unipolar coacervation (micelles having like charges) which must involve attractive... | <urn:uuid:21206f9c-198f-473e-b78d-4669afe28cea> | 2.984375 | 1,006 | Academic Writing | Science & Tech. | 25.40652 |
Figure 11. This graph shows the difference from the observed tide (red) and predicted tide (blue). The difference is the storm surge amount (green). Tides exceeded the 12-foot level 5 times in 4 days at the Portland Harbor tide gauge. Just before midnight on February 25, 2010, the Portland Tide Gauge recorded a 4.37 fo... | <urn:uuid:56d01610-f817-4bf0-8013-dcfdbed5e203> | 3.046875 | 192 | Knowledge Article | Science & Tech. | 77.187375 |
Formatted Numeric Output
May 18, 2012
It is often necessary for programs to produce numeric output in various formats, and most languages provide libraries for this purpose; for instance, C provides the
printf function, which includes the
f format specifications for decimal numbers (integers) and floating point numbers... | <urn:uuid:1f7331df-855d-43fa-aa0d-a51e196ddf4e> | 3.5625 | 138 | Tutorial | Software Dev. | 23.913095 |
HOW STORMS DEVELOP: Storm clouds form as moisture evaporates from the earth into the atmosphere. The air cools off rapidly as it reaches higher altitudes. Sometimes a cold front -- where the cold air from one air mass meets the surrounding air -- will force warm, moist air upward into the colder air. This cools the wat... | <urn:uuid:51d8131a-2d29-41f5-a3cf-cbae17320cf6> | 4.21875 | 264 | Knowledge Article | Science & Tech. | 42.672122 |
New Findings About Mysterious Mercury: Event Monday, 11/5
by AMNH on
Having outlasted its original one-year mission as the first spacecraft to orbit the planet Mercury, the MESSENGER spacecraft is still hard at work investigating the chemistry, composition and geological history of the solar system's innermost planet.
... | <urn:uuid:ef4697b4-56d6-4f6a-81d8-59b42d65ffe0> | 3.765625 | 693 | Audio Transcript | Science & Tech. | 37.204079 |
Tuesday 21 May
Hornet (Vespa crabro)
What’s the World’s Favourite Species?Find out here.
Hornet fact file
- Find out more
- Print factsheet
The hornet is an impressive insect, and is Britain's largest social wasp (4). Despite its rather fearsome appearance, it is rarely aggressive (1); this species has been much malign... | <urn:uuid:65a591dd-ff74-44ed-ae9b-4daffff597d4> | 3.515625 | 1,613 | Knowledge Article | Science & Tech. | 38.73622 |
What's happening in the sky over
A meteor shower.
Over the past weekend the
Leonid meteor shower has
The image -- actually a composite of six exposures of about 30 seconds
each -- was taken in 2001, a year when there was a much more active
At that time, Earth was moving through a particularly dense swarm
of sand-sized ... | <urn:uuid:21dd1615-fd47-4ed9-a969-256fbb038edd> | 3.09375 | 172 | Personal Blog | Science & Tech. | 42.686275 |
Why freeze-thaw cycles generate a gradient
klenchin at REMOVE_TO_REPLY.facstaff.wisc.edu
Sat Sep 9 09:25:06 EST 2000
rosie.redfield at zoology.oxford.ac.uk (Rosie Redfield) wrote:
>The presence of a solute such as sucrose interferes with formation of ice
>crystals and so lowers the freezing point of the solution. But s... | <urn:uuid:14a29455-f0ee-4679-b34a-b2a5fa0d30b2> | 2.6875 | 181 | Comment Section | Science & Tech. | 61.370742 |
slide 1 slide 2 slide 3 Short Example
Debugging is what you do to fix your program when it doesn't work. [As opposed to what you do when it does not compile. -- 20 May 1996] The term originated with the first tube computers. Sadly debugging has always been a part of computer programming. Modern programming techniques t... | <urn:uuid:d0a210c9-9424-43ab-8123-a54580af2f98> | 4.125 | 279 | Tutorial | Software Dev. | 71.572065 |
Multiplying by 2-Digit Numbers
Books for Students
The Information Please Kids' Almanac
Alice Siegel and Margo McLoone-Basta
Houghton Mifflin, 1992.
This informative book may be used throughout the grade.
Counting on Frank
Gareth Stevens, 1991.
The main character has a series of humorous mathematics revelations such as,... | <urn:uuid:d9b7ed58-310f-400c-be84-3ad7d08e2209> | 4.34375 | 623 | Content Listing | Science & Tech. | 42.130581 |
Periodic Table - Tags - chemistry
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- What is the chemical formula for aluminum? I have a project due and that is the last thing I need and I can't find it anywhere.
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Allen St. John, Contributor
I provide an alternative take on sports, entertainment and pop culture
Yesterday, my friend and collaborator Ainissa Ramirez wrote a very popular guest post, entitled The Higgs Boson: Why You Should Care, and Sadly, Why You Don’t. Here’s her follow-up, explaining in very basic terms what the... | <urn:uuid:53646475-0d20-46c4-80ac-aa4c1427b40f> | 2.78125 | 566 | Personal Blog | Science & Tech. | 60.893536 |
This chapter describes functions for searching and sorting arrays of
arbitrary objects. You pass the appropriate comparison function to be
applied as an argument, along with the size of the objects in the array
and the total number of elements.
Comparison Functions: Defining how to compare two objects.
Since the sort a... | <urn:uuid:a2a88755-e42d-4bbe-9a7f-63c1b5c1fa15> | 2.71875 | 78 | Documentation | Software Dev. | 35.026175 |
: an uncharged elementary particle that has a mass nearly equal to that of the proton and is present in all known atomic nuclei except the hydrogen nucleus
One of the constituent particles of every atomic nucleus except ordinary hydrogen. Discovered in 1932 by James Chadwick (1891–1974), it has no electric charge and h... | <urn:uuid:40cea0e3-295c-46a1-a612-8bdd98eb3b05> | 3.875 | 199 | Knowledge Article | Science & Tech. | 42.050503 |
|Jan2-13, 05:05 AM||#1|
Energy Stored in a spring
Why is the energy stored in a spring 1/2 * distance * force? Isn't work just force * distance?
|Jan2-13, 05:42 AM||#2|
In the simple case of a constant force over a fixed distance you can just multiply force by distance. But in the case of a spring being compressed, the... | <urn:uuid:3686fa16-9814-4e46-a023-a776f8bc4467> | 3.203125 | 320 | Comment Section | Science & Tech. | 65.189922 |
|The sky is polarized, as any
bee will eagerly tell you. Humans (with the
possible exception of the Vikings) only
discovered this in 1809 thanks to
Arago. Sixty years later John Tyndall
demonstrated how this happens with his famous and beautiful
light-shinning-through-cloudy-matter experiments . Both the polarization
a... | <urn:uuid:7e9180e3-b1b1-4693-a99c-6ec18acc0a6f> | 3.359375 | 1,305 | Knowledge Article | Science & Tech. | 44.133057 |
Subsidiary SConscript files make it easy to create a build hierarchy because all of the file and directory names in a subsidiary SConscript files are interpreted relative to the directory in which the SConscript file lives. Typically, this allows the SConscript file containing the instructions to build a target file to... | <urn:uuid:ed7ad75a-079d-419d-bcb5-0c6584644d8c> | 3.140625 | 496 | Documentation | Software Dev. | 76.604913 |
Coral reefs, the most biodiverse ecosystems in the ocean, have been facing local and global pressures for some time. In an updated report titled, Reefs at Risk Revisited by the World Resources Institute (WRI), this pressure has reached the point that 75% percent of the world’s reefs are threatened, and 30% of endangere... | <urn:uuid:91d02184-bccb-4a0a-9c4b-efe8fd2f7496> | 4.09375 | 256 | Knowledge Article | Science & Tech. | 26.330846 |
Type systems (by alaric)
There are a number of type systems out there in different programming languages. In fact, there's zillions, but they boil down to a few basic approaches.
One of the biggest splits is between statically decidable type systems and more dynamic ones. In a totally static non-polymorphic type system... | <urn:uuid:0a0336a4-6b1d-4c55-a99f-59823c5061ee> | 3.609375 | 1,430 | Personal Blog | Software Dev. | 32.552153 |
Previous Lecture - - - - Next Lecture
Film Formation I
Ohring: Chapter 5, sections 1 - 3
We can characterize the process of getting atoms onto a surface with
We will examine each of these steps in turn.
impinging atoms must lose enough energy thermally to stay on surface
assume that E = kT so we can talk about energy o... | <urn:uuid:8f757535-9a69-4a37-9996-5289537b83e9> | 3.375 | 841 | Academic Writing | Science & Tech. | 27.266146 |
Click on image for full size
Image courtesy of Corel Photography
With over 2 million species, Kingdom Animalia is the largest of the kingdoms in terms of its species diversity. But when you think of an "animal", what image comes to mind? While mammals, birds, reptiles, amphibians, and fish are the most familiar to us ,... | <urn:uuid:09633e6a-b146-404e-97e4-b32dcd1cd7a5> | 3.375 | 743 | Content Listing | Science & Tech. | 47.73869 |
Night view of the incandescence at the summit on Copahue, taken May 9, 2013. Word of caution: night images can make the incandescence seem more intense through long exposures. Compare with this image taken the same night at ~3 km from the crater. Image: @marucaviahue / Twitter.
It has been a few months since anything m... | <urn:uuid:3fa38659-862d-43aa-a0eb-8dbf80b55da9> | 2.828125 | 1,100 | Personal Blog | Science & Tech. | 45.89148 |
Over is not Translucency
The Porter/Duff Over operator, also known as the “Normal” blend mode in Photoshop, computes the amount of light that is reflected when a pixel partially covers another:
The fraction of bg that is covered is denoted alpha. This operator is the correct one to use when the foreground image is an o... | <urn:uuid:a009c9dd-c494-4ab0-b197-29d7a6f4a922> | 3 | 2,263 | Documentation | Software Dev. | 62.488764 |
View Full Version : What holds clouds together?
05-03-2001, 09:38 AM
I was taking a flight back to the UK the other day, looking out of the window and got to wondering; what holds clouds together? On a sunny day over here you can get single (large) clouds (can't remember the name... cumulo-nimbus? Something like that) ... | <urn:uuid:ef6ca2f5-1b6e-41ef-bccf-a769581682b5> | 3.78125 | 1,318 | Comment Section | Science & Tech. | 70.80617 |
Other Chapters' Lyrics:
Other Chapters' Notes:
Earth Science Chapter 8
∑ Seismology is the study of earthquakes.
∑ Earthquakes occur mostly at the edges of tectonic plates, giant masses of solid rock that cover the earth.
∑ Faults, which are breaks in the Earthís crust, are especially present at tectonic plate boundari... | <urn:uuid:6ebfe42e-ce33-4d78-9146-22c6073eda14> | 3.78125 | 365 | Structured Data | Science & Tech. | 55.149283 |
By the time the yellow Haze had reached southern Utah, Marith Reheis was already camped out in Canyonlands National Park and trapping local desert dust for the U.S. Geological Survey.
“The weather had been absolutely perfect—not a cloud in the sky,” she recalls. “But that third morning, we saw a patch of sky that just ... | <urn:uuid:3a677e36-87ab-479d-bf33-7fdd9b95cf3d> | 3.65625 | 784 | Nonfiction Writing | Science & Tech. | 51.187305 |
Embedding Python is similar to extending it, but not quite. The difference is that when you extend Python, the main program of the application is still the Python interpreter, while if you embed Python, the main program may have nothing to do with Python -- instead, some parts of the application occasionally call the P... | <urn:uuid:ddb19f61-1cbf-48c8-8468-1e15f20e5c20> | 2.953125 | 257 | Documentation | Software Dev. | 35.590765 |
(Submitted May 20, 1998)
Why are the densest planets closest to the Sun?
It is because of the temperature gradient that was in the solar nebula,
from which the planets formed. The inner (hotter) parts could only condense
out the silicates, forming the terrestrial planets. The cooler part further
out could condense out ... | <urn:uuid:ef812699-0e17-4307-b10f-2163093e22ac> | 3.578125 | 169 | Q&A Forum | Science & Tech. | 51.481025 |
I use the standard orientation of the three coordinate axes.
* - - - - - - y
It is a paraboloid. Consider the following surface: .
What's this surface called?
is the -plane (the "floor" of the graph). What coordinate plane does define?
The -plane is the "left wall" of the graph. What's the trace of this surface in the ... | <urn:uuid:6e12b815-91a5-4177-9bd2-50024ea91f06> | 3.109375 | 158 | Q&A Forum | Science & Tech. | 68.062103 |