text large_stringlengths 148 17k | id large_stringlengths 47 47 | score float64 2.69 5.31 | tokens int64 36 7.79k | format large_stringclasses 13
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Introduces the fundamentals of XML, including how to read a basic XML document, the XML document structure, and viewing XML source documents. It shows how to build an XML data document, including creating elements and element modes, naming XML objects, and creating declarations and well-formed documents. Building DTDs ... | <urn:uuid:48953aed-32ae-45ff-95d3-348af67cb95d> | 3.234375 | 1,043 | Content Listing | Software Dev. | 48.284224 |
- slide 1 of 4
Instead of directly answering the question of "Do engineers use differential equations?" I would like to take you through some background first and then see whether differential equations are used by engineers.
Years ago when I was working as a design engineer for a shock absorber manufacturing company, ... | <urn:uuid:497721dc-f127-40e8-9a81-8810f29cb8dd> | 2.734375 | 936 | Truncated | Science & Tech. | 31.414779 |
windstormArticle Free Pass
windstorm, a wind that is strong enough to cause at least light damage to trees and buildings and may or may not be accompanied by precipitation. Wind speeds during a windstorm typically exceed 55 km (34 miles) per hour. Wind damage can be attributed to gusts (short bursts of high-speed winds... | <urn:uuid:ac36eead-b9df-471f-a5ed-8dbe7e8874a2> | 4.1875 | 954 | Knowledge Article | Science & Tech. | 53.198498 |
We currently think that the universe is some 13.7 billion years old. With that in mind, the zoomed-in cutaway above is pointing to a very, very distant galaxy, which we've observed 420 million years after the big bang. That means the light we're seeing from it spent 13.3 billion years traveling through the cosmos. Whoa... | <urn:uuid:f3107447-c326-4567-8f57-589f64330cad> | 3.265625 | 529 | Personal Blog | Science & Tech. | 57.315656 |
Your program takes a phone number with alphabet as an input, converts it into numeric digits, and outputs the result to the standard output.The phone number is XXXXX of number, alphabet (lowercase and uppercase), and dash(-).Your program outputs numbers only, ignoring all dashes in user's input.You can safely assume th... | <urn:uuid:1016957c-a6d5-4cc9-b197-cb5a114494ce> | 3.109375 | 466 | Q&A Forum | Software Dev. | 73.045082 |
Evolving Technology, Advancing Science
July 9–13, 2012
Presented at the Lunar and Planetary Institute
Other Data Sources
Images from all the missions discussed during the Mars Revealed workshop can be found on the Jet Propulsion Laboratory’s Planetary Photojournal website. From the homepage, click on the picture of Mar... | <urn:uuid:fe40ff19-d36b-40ae-a905-4f71f65a561a> | 3.234375 | 325 | Knowledge Article | Science & Tech. | 45.924572 |
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 12 results on physics.org and 42 results in our database of sites
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Newton's Second Law of Motion
Learn about NASCAR racing at the National Science Foundation's Science of Speed website.Flickr Physics
Visit The Physics Classroom's Flickr Galleries and take a visual overview of Newton's laws of motion.Flickr Physics
Visit The Physics Classroom's Flickr Galleries and take a visual explor... | <urn:uuid:da66d92f-c501-4b60-8b7e-5efae79de822> | 3.390625 | 1,640 | Tutorial | Science & Tech. | 50.849015 |
I inaugurate this blog with an article on PyPy, an implementation of Python very interesting in terms of performances because, as we shall see in this article, it is possible to compete with statically compiled languages such as C or C++. The article will break down as follows:
- What is Python ?
- What are the differe... | <urn:uuid:505f3154-07b0-48a1-9f1a-a177486aa012> | 3.03125 | 1,331 | Personal Blog | Software Dev. | 34.260959 |
Bullock, S. H., H. A. Mooney, and E. Medina, eds. 1995. Seasonally dry tropical forests. New York: Cambridge University Press. 450 pp.
Frankie, G. W. 1997. Endangered havens for diversity. Book review of S. H. Bullock et al., eds. Seasonally Dry Tropical Forests (1995). BioScience 47:322–24.
Holdridge, L. R., W. C. Gre... | <urn:uuid:b068183f-d8f0-4a5d-beae-ece60ffb7ee3> | 2.875 | 455 | Content Listing | Science & Tech. | 66.864828 |
If you were to trace human evolution backward in time and space, you’d eventually end up in Africa. There, millions of years ago, animal species evolved to walk upright on two legs and spend more of their lives on the ground than in the trees. Homo sapiens, the species you belong to if you’re reading this article, had ... | <urn:uuid:8aed3082-d669-4398-9564-3560a7bae567> | 4.125 | 865 | Knowledge Article | Science & Tech. | 40.469486 |
"It Was a Mistake" | Sympathy for the Devils | You Get What You Pay For | As the World Warms |
Woe is Us | Up to Speed
Woe Is Us: Ready, set, panic.
If a tree falls in a forest and no one hears it, does it cause an earthquake? After studying the 2010 earthquake in Haiti that killed more than 200,000 people, University ... | <urn:uuid:cf2b0c0b-0040-4c4f-9626-fbdd8af13af4> | 3.1875 | 353 | Knowledge Article | Science & Tech. | 60.937637 |
Hot, Dry, and Cloudy (Artist Concept)
This artist's concept animation shows a cloudy Jupiter-like planet that orbits very close to its fiery hot star. NASA's Spitzer Space Telescope was recently used to capture spectra, or molecular fingerprints, of two "hot Jupiter" worlds like the one depicted here. This is the first... | <urn:uuid:3a985031-5ecf-4f58-979c-fa7c53626be0> | 4.03125 | 752 | Truncated | Science & Tech. | 54.735306 |
An HTML table with a <thead>, <tfoot>, and a <tbody> element:
The <thead> tag is supported in all major browsers.
The <thead> tag is used to group header content in an HTML table.
Browsers can use these elements to enable scrolling of the table body independently of the header and footer. Also, when printing a large ta... | <urn:uuid:423fad72-67ee-4273-9da2-d797df07b721> | 2.96875 | 391 | Documentation | Software Dev. | 59.567647 |
© 2003 - 2007 WELLOG
All Rights Reserved
PART II, PAGE 2
The interaction of acoustic waves in a rock matrix affect velocity and attenuation of the acoustic signal. Rock density, porosity, saturation and fracturing have different affects that contribute to a very complex acoustic signal which contains an abundance of in... | <urn:uuid:13c5a205-7414-4152-95b6-ff59058149d9> | 3.5 | 1,358 | Tutorial | Science & Tech. | 54.576492 |
Despite the need to reduce carbon dioxide emissions, the burning of coal has only been accelerating.
Stories Tagged "electricity"
Researchers demonstrate a significant jump in the efficiency with which heat can be converted directly into electricity.
ArrayPower says its "sequenced inverter" will cut the cost of solar b... | <urn:uuid:d9cfd1b3-140e-4126-94d5-1d104bba1cb8> | 3.171875 | 202 | Content Listing | Science & Tech. | 37.527923 |
The pure musical tone produced by striking a tuning fork is said to have a certain pure pitch or frequency. That frequency is the number of times that the sound waves compress and dilate in a second, or, for water waves and other types of vibration, the number of times the wave rises or falls in a second. Frequencies a... | <urn:uuid:fdddb104-aae7-489d-a8a9-eef6ec6877a0> | 4.21875 | 217 | Knowledge Article | Science & Tech. | 52.242702 |
Glimpsing the Edge of the Universe: Results from the Hubble Space Telescope
Dr. Bruce Margon (University of California, Santa Cruz)
Listen (mp3 file, 24 MB)
The Hubble Space Telescope has circled the Earth 15 times every day for more than 16 years. Dr. Margon, who was until recently the Associate Director for Science f... | <urn:uuid:5edcb7a2-f82e-46de-a5fc-28f6c28d5c7e> | 2.71875 | 128 | Truncated | Science & Tech. | 43.367231 |
The term “tarantula hawk” applies to more than one species of large wasp. It even applies to more than one genus. Here in the United States, the genera Pepsis and Hemipepsis are the only tarantula hawks, and the largest of our spider wasps in the family Pompilidae. Hemipepsis ustulata is a common species across much of... | <urn:uuid:2b849057-6207-4131-8aff-0bf9905a17a3> | 3.21875 | 994 | Personal Blog | Science & Tech. | 42.426377 |
Some beginner questions.
I am currently trying to learn C++ from a book (Sams teach yourself C++) and I had several questions.
Does using the following.
Instead of calling them again every time have any effect on the programs execution or is it just laziness? With calling them again every time I mean for example.
using... | <urn:uuid:892c2fca-6172-4c6c-aad4-2e0599590579> | 2.96875 | 211 | Comment Section | Software Dev. | 66.993333 |
Interim recovery plan no. 133
Gillian Stack & Andrew Brown
Department of Conservation and Land Management, WA, 2003
|Scientific Name:||Lambertia echinata subsp. occidentalis||Common Name:||Western Prickly Honeysuckle|
|Family:||Proteaceae||Flowering Period:||October - December|
|Dept Region:||South West||Dept District:... | <urn:uuid:ea79944f-2f55-407b-ad52-c4b95aa8e372> | 2.890625 | 1,656 | Knowledge Article | Science & Tech. | 25.646735 |
Fabrication method can affect the use of block copolymer thin films
A new study by a team including scientists from the National Institute of Standards and Technology (NIST) indicates that thin polymer films can have different properties depending on the method by which they are made. The results* suggest that deeper w... | <urn:uuid:289906f2-c6d6-474a-9feb-e471e7eb0030> | 3.6875 | 870 | Content Listing | Science & Tech. | 35.885269 |
See also the
Browse High School Equations, Graphs, Translations
Stars indicate particularly interesting answers or
good places to begin browsing.
Selected answers to common questions:
Direct and indirect variation.
Slope, slope-intercept, standard form.
- Pre-calculus Function Question [2/8/1996]
Does the function f(x)... | <urn:uuid:7361df05-fdf5-432a-bc75-df64018cddea> | 3.796875 | 1,815 | Q&A Forum | Science & Tech. | 79.729059 |
Phoenix was the first to explore the surface of a polar region on Mars, areas rich in water-ice (right).
The spacecraft landed farther north than any previous spacecraft to land on the Martian surface.
It was the first mission in NASA's Mars Scout program.
Phoenix inherited its lander. Originally the lander was to be u... | <urn:uuid:7cce63d7-0d2d-4916-bc83-8113a26ae882> | 3.9375 | 147 | Knowledge Article | Science & Tech. | 51.149918 |
NASA eClips: Transits
A 'transit' occurs whenever one object moves in front of another object as viewed from your particular location in space. We observe this phenomenon thousands of times every day because we live in a 3-dimensional world that is crowded by many different kinds of objects as we move past them. In ast... | <urn:uuid:ac47ca8a-3fae-4e9a-aef6-52dcfca644ac> | 4.15625 | 582 | Tutorial | Science & Tech. | 43.624069 |
Energy in the Real World
Solar and Wind are not renewable. The energy from solar and from wind is of course renewable but the devices used to capture the energy of the sun and wind is not renewable. Nor are they green or sustainable.
An oak tree is renewable. A horse is renewable. They reproduce themselves. The human-m... | <urn:uuid:5e554516-9f51-4794-b573-7875f430f502> | 3.25 | 1,223 | Personal Blog | Science & Tech. | 37.840539 |
Science subject and location tags
Articles, documents and multimedia from ABC Science
Monday, 22 October 2012
Pesticides used in farming are also killing worker bees and damaging their ability to gather food, meaning colonies that are vital for plant pollination are more likely to fail when they are used, according to ... | <urn:uuid:469520a4-b7d2-4b47-a72e-5a847d90d38b> | 2.71875 | 516 | Content Listing | Science & Tech. | 42.112304 |
All members of this family have five-petaled flowers in which the superior ovary ripens to form a "pod", technically called a legume, whose two sides split apart, releasing the seeds which are attached to one or both seams. The legumous plants are classified into three subfamilies, sometimes raised to the rank of famil... | <urn:uuid:178cf41b-aa81-4354-8c46-bc895a3cad56> | 3.984375 | 354 | Knowledge Article | Science & Tech. | 27.782925 |
JEXL stands for Java EXpression Language. It's not a part of the GATK as such; it's a software library that can be used by Java-based programs like the GATK. It can be used for many things, but in the context of the GATK, it has one very specific use: making it possible to operate on subsets of variants from VCF files ... | <urn:uuid:7d2d851a-79cb-4b2a-a922-8e9c4b771d38> | 2.734375 | 4,264 | Documentation | Software Dev. | 63.345558 |
The Water Use Efficiency of Tropical Dry-Forest Trees
Brienen, R.J.W., Wanek, W. and Hietz, P. 2011. Stable carbon isotopes in tree rings indicate improved water use efficiency and drought responses of a tropical dry forest tree species. Trees 25: 103-113.
Noting that "increases in Wi have been observed in short-term e... | <urn:uuid:5d9e3eb7-3e3e-46d3-b487-a765ecdc42df> | 2.953125 | 799 | Academic Writing | Science & Tech. | 70.621023 |
Gene-Chips is run by computational chemist Leming Shi, "a fan" of DNA arrays who works as a contractor for the Food and Drug Administration. The site's design is simple yet effective: It's one long page of text sprinkled with hyperlinks. Shi describes how the chips work, the basic setup (robotics for making chips, labe... | <urn:uuid:f38288c7-e751-43a4-9fe0-be1d0aa31e1e> | 3.03125 | 191 | Knowledge Article | Science & Tech. | 39.23489 |
Alternate name: European Mantid
Family: Mantidae, Mantids view all from this family
Description A large mantis; color ranges from bright green to tan, wing extend beyond tip of abdomen. Large compound eyes tan to chocolate-brown. Distinguished easily by a black-ringed brown spot beneath the fore coxae (walking legs). S... | <urn:uuid:a68513e6-cc4a-4aa9-8ad0-8bab63ee7d7e> | 3.359375 | 377 | Knowledge Article | Science & Tech. | 44.405 |
Credit: NASA/CXC/Ohio State Univ./C.Grier et al.; Optical: NASA/STScI, ESO/WFI; Infrared: NASA/JPL-Caltech
Spiral Galaxy NGC 3627 - The spiral galaxy NGC 3627 is located about 30 million light years from Earth. This composite image includes X-ray data from NASA's Chandra X-ray Observatory (blue), infrared data from the... | <urn:uuid:ac601855-9db4-4f02-b029-13a94b28b000> | 3.78125 | 306 | Knowledge Article | Science & Tech. | 42.230909 |
Pine Tree Cone Production
Name: Myra Jean
We live in Wisconsin and have noticed that the
conifers are especially laden with cones this year. Many other
years the trees have had cones mostly at the top. But this year
many of the trees are heavy with cones top to bottom, to the point
where the look brown rather than the ... | <urn:uuid:f9d5cda6-becb-4bfd-9856-c63997e8ea68> | 3.5625 | 372 | Q&A Forum | Science & Tech. | 51.517703 |
On October 4 and 5, a coronal mass ejection from the sun sent an explosion of particles speeding toward earth. Three days later, those particles hit the earth's magnetic field. The magnetic field funneled the particles into the atmosphere near the poles, where they collided with gases in the upper atmosphere to release... | <urn:uuid:f551f1f3-aa56-4301-9445-5614af0c97df> | 2.84375 | 2,136 | Content Listing | Science & Tech. | 56.833542 |
You did not define what this inch of space was composed of.
If this inch of space was air, it would be physically different
than liquid water being in that space. Why is it physically different? Because water is not compressible and maybe not decompressible either. In order for a vacuum to originate in that space, some... | <urn:uuid:9db1152f-e475-4433-85f5-25152ec17d58> | 3.125 | 475 | Comment Section | Science & Tech. | 65.313545 |
When someone mentions 'salinity' and 'water' in the same sentence, most people think of the ocean, the Gulf or coastal bays. However, simply put, 'salinity' refers to the amount of salts dissolved in water, any water, and that includes "freshwater". Generally speaking, the salts that constitute salinity in oceans are t... | <urn:uuid:9487002a-00b3-413d-b06e-e6b5f477ecef> | 3.90625 | 1,369 | Knowledge Article | Science & Tech. | 41.935206 |
Now lets see what exactly is HTML (Hyper Text Markup Language). It is a type of data file which is transferred to the client machine. The HTML file gets translated and displayed on the screen if the client is using a Web browser like Netscape Navigator, Microsoft Internet Explorer etc. Let me give you a brief descripti... | <urn:uuid:fbb1e60d-14b2-4763-8eb8-28e314af1bf7> | 3.671875 | 520 | Documentation | Software Dev. | 70.341769 |
Authors: Azzam AlMosallami
Radio metric data from Pioneer 10/11 indicate an apparent anomalous, constant, acceleration acting on the spacecraft with a magnitude ~ , directed towards the Sun[1,2]. Turyshev examined the constancy and direction of the Pioneer anomaly, and concluded that the data a temporally decaying ano... | <urn:uuid:7787b7ef-3140-4d5b-980e-55255fab0645> | 3 | 335 | Academic Writing | Science & Tech. | 34.422629 |
Conventional microscopes look through slices of tissue far thinner than a piece of paper. Stained and mounted on slides, the images of cells are like tiny stained glass windows.
But the technology of the past few years has changed microscopes profoundly. Not only can they magnify to a much greater degree, they can diss... | <urn:uuid:15a213f2-8951-49bb-bba7-fe4d75f60561> | 3.59375 | 1,079 | Audio Transcript | Science & Tech. | 47.014214 |
(CNN) -- Concentrations of greenhouse gases in the Earth's atmosphere reached record highs in 2011, according to new data published by the World Meteorological Organization (WMO).
The WMO's annual Greenhouse Gas Bulletin, released Tuesday, reports that carbon dioxide rose to 390.9 parts per million (ppm), up two ppm on... | <urn:uuid:2a71eda9-a333-4ef9-b417-4b2b23e4b303> | 3.703125 | 580 | Truncated | Science & Tech. | 41.108407 |
We live in a strange, beautiful, and often alien-looking world. Case in point: the crystal-clear Jewel Caterpillar of Central and South America, pictured here in all its translucent glory.
This particular caterpillar (which is known more formally as Acraga Coa, and metamorphoses into this equally stunning orange moth) ... | <urn:uuid:83bc6833-ece8-4e69-ba13-4ac1e5ba092c> | 2.75 | 256 | Truncated | Science & Tech. | 36.567153 |
Are there spaces in between air molecules? If yes what is in those
Not only is there empty space in between molecules, there is empty
space INSIDE molecules and atoms!
This question is actually a very old one - the greeks debated
"atomism", with the objection to "atoms" being that if you have
atoms, then you must have ... | <urn:uuid:237782b1-5fb0-4261-ac67-f658a49514ea> | 2.765625 | 171 | Knowledge Article | Science & Tech. | 41.582273 |
Power was increased by 71% and the figure of merit increased to 1.5
Northwestern University researchers (along with colleagues from University of Michigan and the Jet Propulsion Lab) discovered that adding two metals, antimony and lead, to the well-known semiconductor lead-telluride, produces a thermoelectric material ... | <urn:uuid:6da0cabb-dde1-4d1a-9695-f4464c4e10cf> | 4.03125 | 778 | Knowledge Article | Science & Tech. | 34.388037 |
Goals: This mission, like its twin Venera 12, called for a flyby spacecraft and a lander to explore Venus' ionosphere, atmosphere and surface and the interplanetary environment.
Accomplishments: The flyby craft studied the solar wind, gamma-ray bursts, ultraviolet radiation, and Venus' ionosphere. It passed the planet ... | <urn:uuid:33be572e-85ad-4fe4-949b-a83285cca5e0> | 3.734375 | 178 | Knowledge Article | Science & Tech. | 27.187535 |
Learn more physics!
If higgs bosons grab on to particles why do these free particles continue traveling--i.e., per Newton's first law?
- Mehran (age 62)
Many newspaper articles have said that the Higgs field acts like a "cosmic molasses". That's a terrible analogy. Molasses causes friction, which makes things come to r... | <urn:uuid:272582f8-ac26-4cdb-bb9f-40234baf9d33> | 2.90625 | 194 | Q&A Forum | Science & Tech. | 67.213495 |
Science Fair Project Encyclopedia
Saprotroph (also saprobe) is an organism that obtains its nutrients from non-living organic matter, usually dead and decaying plant or animal matter, by absorbing soluble organic compounds.
Saprotrophs cannot make food for themselves, so they are a type of heterotroph. They are useful ... | <urn:uuid:2c36c9e1-b80e-4abd-a11a-10c0cb99ed08> | 3.109375 | 124 | Knowledge Article | Science & Tech. | 30.733333 |
July 25, 2011
The super-heated gas emits X-ray and ultraviolet radiation; Earth’s upper atmosphere absorbs it, which changes our atmosphere’s properties. This can disrupt communication, navigation, and surveillance systems, and also alter the orbits of satellites.
X-ray and ultraviolet radiation, energetic particles, a... | <urn:uuid:e31d17a6-836a-4cb6-9485-6219e6015784> | 3.171875 | 295 | Truncated | Science & Tech. | 29.738979 |
Dan VandenAkker & Ross Norman
Summer Research 2006
Download the printer friendly Word Document version of this page.
All the experiments on this page involved a radio-frequency oscillator circuit adapted from "Alkali Metal Vapor Spectral Lamps," W.E. Bell, A.L. Bloom, & J. Lynch, Rev. Sci. Instr. Vol. 32, pg 688 (1961)... | <urn:uuid:20b1a37f-ec1a-423a-af83-cc337809c22b> | 3.625 | 1,013 | Academic Writing | Science & Tech. | 41.318554 |
will anybody be able to help me!:) :(
im trying to write a java program really simply using edit plus using things such as println,joptionpane etc to try and do:
Using appropriate techniques design implement and test a simple program that accepts a measurement in stone and pounds from the user, and outputs the measurem... | <urn:uuid:8d25d089-50f5-4d4a-a8f4-dea60c7a3aef> | 2.875 | 155 | Q&A Forum | Software Dev. | 67.452273 |
IN THE near vacuum of interstellar space, temperatures hover just above absolute zero, where even the wobbling of atoms grinds to a halt. Dotting this empty, frigid world are huge globs of gas and dust grains, so numerous they block out nearly all light. And outside the shelter of these interstellar clouds, bombarding ... | <urn:uuid:156b416d-c915-4854-bd3f-e88f78307eae> | 4.0625 | 214 | Truncated | Science & Tech. | 49.196767 |
Mechanics: Momentum and Collisions
Momentum and Collisions: Audio Guided Solution
A 92-kg fullback moving south with a speed of 5.8 m/s is tackled by a 110-kg lineman running west with a speed of 3.6 m/s. Assuming momentum conservation, determine the speed and direction of the two players immediately after the tackle.
... | <urn:uuid:5deab528-0ffe-4fbe-9d88-da0aab6daced> | 3.84375 | 300 | Tutorial | Science & Tech. | 66.579544 |
A mind-boggling quantity of information is being presented at the Lunar and Planetary Science Conference. In my first report from the meeting, I try to make sense of the Curiosity and Opportunity sessions.
As February turned to March, Opportunity was conducting some of its final science investigations on Matijevic Hill... | <urn:uuid:7bac7c0a-c203-4a64-9d20-f19db8ac2a87> | 2.765625 | 272 | Personal Blog | Science & Tech. | 25.378333 |
Pinyon Jay (Gymnorhinus cyanocephalus)
Associated Species: Other species that may use habitats in a similar way and/or respond similarly
to threats, management, and conservation activities include Ash-throated Flycatcher, Juniper
Titmouse, and Bewick's Wren.
Distribution: Pinyon Jays range the semiarid lands of the Wes... | <urn:uuid:faee4622-7b12-4036-b1fa-7891b1bda940> | 3.375 | 800 | Knowledge Article | Science & Tech. | 49.925993 |
- Remove any labels from the bottle and fill it all the way to the top with water.
- Add a ketchup pack to the bottle.
- If the ketchup floats, you're all set - go to step 4. If the ketchup sinks in the bottle, go to step 5.
- For the floating ketchup pack simply screw the cap on the bottle and squeeze the sides of the... | <urn:uuid:30a9dbd6-e65d-44a1-8872-05bb64fdc420> | 2.953125 | 598 | Tutorial | Science & Tech. | 71.122005 |
|Global Warming and Land Ice|
Over the past century, sea level has slowly been rising. This is in part due to the addition of water to the oceans through either the melting of or the "calving" off of icebergs from the world's land ice. Many individual mountain glaciers and ice caps are known to have been retreating, co... | <urn:uuid:68d9a9fc-c0bf-4e73-bbfc-f0f51eec5f6f> | 4.40625 | 476 | Knowledge Article | Science & Tech. | 34.245012 |
The full text of this article is available by subscription only.
Irving P. Krick, one of the first WIDELY-KNOWN commercial meteorologists in the United States, cut a controversial swath across the meteorological field during the middle of the twentieth century and, in so doing, earned both avid fans and fervent critics... | <urn:uuid:aff974f4-b336-4737-a1a3-3079b6db88d7> | 3.015625 | 184 | Truncated | Science & Tech. | 29.999559 |
Acid rain damages buildings like this one in Copola, Mexico.
Click on image for full size
Have you ever heard of acid rain? Acid rain is what happens when some types of air pollution is washed out of the sky by rain. Sometimes, the pollution can be washed out by snow, sleet, hail, mist or fog, but it is still called ac... | <urn:uuid:9c605566-3839-4eb3-916b-03a55f687d5b> | 3.5 | 717 | Knowledge Article | Science & Tech. | 67.698974 |
January 29, 2007
From Original Article By
Earlier this month, amateur fisherman Haruo Kanbe stared out at sea in horror — a monster fish was swimming directly towards him. At first glance the creature snaking through the water looked like a giant eel. The cloudy eyes were especially striking. Triangular teeth flashed i... | <urn:uuid:af97642e-d6fc-4293-93e0-366b0b0a4900> | 3.84375 | 315 | Truncated | Science & Tech. | 53.022694 |
That first bullet is the reason that adding the space reads your new line from the buffer.
A directive is one of the following:
A sequence of white-space characters (space, tab, newline, etc.; see isspace(3)). This directive matches any amount of white space, including none, in the input.
• An ordinary character (i.e.,... | <urn:uuid:da6ee8cb-d70c-4ed0-99b0-c64ef2cae2c8> | 3.171875 | 169 | Documentation | Software Dev. | 56.531148 |
Conditions of Use
The sun is a very important energy source.
It gives heat and light to Earth. Plants need light to grow. Light acts with water and carbon dioxide in a plant to make its food.
People use the sun's energy to make electricity. Special solar panels are used to convert (change) the sun's energy into electri... | <urn:uuid:67fcce3d-3ca7-4d3e-bddb-9db205ec46d7> | 2.78125 | 290 | Comment Section | Science & Tech. | 78.122879 |
Monday, September 24, 2012 - 18:30 in Astronomy & Space
NASA's rover Curiosity touched a Martian rock with its robotic arm for the first time on Sept. 22, assessing what chemical elements are in the rock called "Jake Matijevic."
- Curiosity on Mars sits on rocks similar to those found in marshes in MexicoTue, 30 Oct 20... | <urn:uuid:f52b34ac-b5ad-4f7c-a68e-cc1aab599e79> | 3.46875 | 177 | Content Listing | Science & Tech. | 35.955 |
One of the first topics we covered in astrogeology is impact craters. They are characterized by circular or ellipitical depressions in a planetary body and sometimes contain central peaks. The shape is a function of the angle at which the impactor hits the body and the central peak is a product of isostatic rebound. Th... | <urn:uuid:931af8ed-f369-4a08-a899-3e47310cb7c1> | 3.90625 | 166 | Personal Blog | Science & Tech. | 48.446591 |
Ever hear the terms "fat," "protein," and "carbohydrate"? That's because of William Prout. Born in 1785, he was the first person in history to figure out the basic components of foodstuffs. A brilliant chemist, he's still best known for having one of the nearest misses in all of science. Probably he shouldn't have name... | <urn:uuid:74accdf7-c1e0-48e1-9fec-eb449cced802> | 3.46875 | 578 | Nonfiction Writing | Science & Tech. | 51.348396 |
Pub. date: 2008 | Online Pub. Date: November 27, 2007 | DOI: 10.4135/9781412953948 | Print ISBN: 9781412928168 | Online ISBN: 9781412953948| Publisher:SAGE Publications, Inc.About this encyclopedia
Central Limit Theorem
A series of theorems in mathematical statistics called the central limit theorems provide theoretica... | <urn:uuid:97deb6b8-11cf-4ded-9974-5f448493dfec> | 3.796875 | 245 | Truncated | Science & Tech. | 44.126288 |
From Latin: rectus "right" + angle
Drag the orange dots on each vertex
to reshape the rectangle.
The rectangle, like the
is one of the most commonly known
quadrilaterals. It is defined as having all four interior angles 90°
Properties of a rectangle
- Opposite sides are
Adjust the rectangle above and satisfy yourself t... | <urn:uuid:c85111a5-288b-4c5c-accb-369825667bc8> | 4 | 297 | Knowledge Article | Science & Tech. | 29.602 |
I. Analog location: The Davis Mountains in
Reasons for: Our location in Houston
is too tropical to be considered as an analog location. Even on our
school grounds, we have too many buildings, plants, trees and people
for it to be like the Moon. We wanted something more similar to the
Moon’s environment. In the Davis Mo... | <urn:uuid:f2eee659-b45a-4aac-ad05-0f30909e960b> | 3.78125 | 1,540 | Tutorial | Science & Tech. | 53.046618 |
A 10,000 Pound Elephant Can Be Restrained by a Puny Rope. (Pssst, Your Development Team Can Be Too.)
Elephants can easily grow in excess of 5 tons each, tearing through trees, brush, and even houses if they get in their way. These lumbering giants are roamers by nature, and typically care very little about what obstacl... | <urn:uuid:04c0983b-dca4-4e57-b603-31e028b18408> | 2.734375 | 2,056 | Personal Blog | Software Dev. | 41.754146 |
With the help of Stokes' theorem, Ampère's integral law (1.4.1) can now be stated as
That is, by virtue of (2.5.4), the contour integral in (1.4.1) is replaced by a surface integral. The surface S is fixed in time, so the time derivative in (1) can be taken inside the integral. Because S is also arbitrary, the integran... | <urn:uuid:a1bab1f0-3be5-47ce-8486-bc6408048ee6> | 3.078125 | 395 | Academic Writing | Science & Tech. | 71.68819 |
Altering the mechanism of a reaction so that the activation energy is lower is the second major way to speed up the reaction. A catalyst can do this by participating in the activated complex for the rate-limiting step, even though the catalyst itself is neither a reactant nor a product in the overall stoichiometric equ... | <urn:uuid:6550e7bb-d6c8-4a3c-9a43-d96f1df32d7e> | 3.4375 | 1,334 | Knowledge Article | Science & Tech. | 47.911028 |
>> Study Material
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>> Reversible and Irreversible Cells
Reversible and Irreversible cells
REVERSIBLE AND IRREVERSIBLE CELLS
Daniell cell has the emf value 1.09 volt. If an opposing emf exactly equal to 1.09 volt is applied to the cell, the cell reaction,
Zn + Cu2+ --> Cu + Zn2+... | <urn:uuid:7e2d41b2-0001-4ba5-b787-64944520d0e8> | 2.9375 | 313 | Knowledge Article | Science & Tech. | 51.474574 |
Nitrate and phosphate are useful as fertilizers in agriculture and gardening. Nitrate and phosphate aid agricultural production by producing more abundant crops. However, since the mass production of ammonia during the 1940's by way of the Haber process, it has been noted that a phenomenon known as “nitrate pollution” ... | <urn:uuid:e1407548-fd3a-432b-b54f-f623135381e5> | 3.8125 | 465 | Tutorial | Science & Tech. | 39.807984 |
Radical New Theory: "Our Universe may be the interior of a black hole existing in another universe” (Today's Most Popular)
“Our own Universe may be the interior of a black hole existing in another universe.” In a remarkable paper about the nature of space and the origin of time, Nikodem Poplawski, a physicist at Indian... | <urn:uuid:032e4607-905b-4271-b23d-0e56c3d40663> | 3.171875 | 705 | Personal Blog | Science & Tech. | 30.144099 |
Move the points by dragging them. Reload the page to restore the initial configuration.
There are many proofs known, but one of the most attractive is due to the nineteenth century Belgian mathematician Germinal Dandelin. It has the virtue of being perhaps the most geometric in flavour. This proof has much in common wi... | <urn:uuid:be0bce54-7424-4913-bc42-aecb616346cb> | 3.078125 | 451 | Knowledge Article | Science & Tech. | 58.24378 |
Benefits And Costs Of Migrating Species
January 19, 2001
Whether by choice or chance, when humans have gone to new places, other species new to those lands have often journeyed with them. While some migrations can impose heavy social costs -- such as the introduction of new diseases -- the benefits are often enormous.
... | <urn:uuid:9c08b519-dc61-4349-9c31-eaa91bcf35df> | 3.453125 | 378 | Truncated | Science & Tech. | 39.755175 |
MOUNTAINEERS climbing Mount Everest will have to battle with a cloak of ozone that descends over the peak as the day wears on.
During expeditions to Everest in the summer of 2001 and 2002, Tong Zhu from Peking University in Beijing, China, and his colleagues measured ozone and carbon monoxide levels at an altitude of 5... | <urn:uuid:f1080119-d2b6-4a40-b327-9a954f99ec45> | 3.703125 | 216 | Truncated | Science & Tech. | 54.22 |
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Planet Vs. Star
Wed Oct 15 16:34:00 BST 2008 by Anonymous
Actually, size isn't as significant. When they redefined planetary objects (i.e. When Pluto became a dwarf planet, instead of a planet), had to do with the body of mass have a clear orbit, void of interstellar debris. The body can... | <urn:uuid:455fa62e-1bc9-4f75-8112-1ead3092262e> | 2.890625 | 92 | Comment Section | Science & Tech. | 70.483094 |
NOAA: Warmest Global Sea-Surface Temperatures for August and Summer
September 16, 2009
Global surface temperature anomalies for the month of August 2009. Temperature is compared to the average global temperature from 1961-1990.
Visualization of world’s land and ocean surface temperature.
High resolution (Credit: NOAA)
... | <urn:uuid:61a40aaf-3dbd-4f85-a5b8-9b62852b736b> | 3.078125 | 734 | Knowledge Article | Science & Tech. | 51.838135 |
18 May 2011
Posted in WFTV Severe Weather Center 9
Have you ever wondered what a vortex is and how natural vortices including tornadoes, whirlpools and cyclones move the way they do? Try the tornado in a bottle experiment to find out. A vortex is a whirling mass of water, air or fire that creates a visible tornado-like... | <urn:uuid:d5a2bbfa-10de-44e5-99ab-cafebcd68609> | 3.875 | 609 | Tutorial | Science & Tech. | 60.182069 |
Summary: §1.1: NEWTON'S LAW OF COOLING
Imagine some object like a cannon ball suspended in a swimming
pool by a rope. The cannon ball is at some temperature; perhaps
hotter thant the water, perhaps cooler. We can think of it as being a
`point source' of heat flow in or out. We are interested in the tem-
perature T (in ... | <urn:uuid:df5b9686-ff79-4c5f-bebd-0ef1e88e96fd> | 3.65625 | 258 | Academic Writing | Science & Tech. | 60.154615 |
According to the mythos of the BattleTech tabletop/computer/video games, novels, comics, and anime shows, the principles behind faster-than-light travel will be discovered at Stanford University in just six years. (Get ready, people!)
About a century later, further work will be done on the theories of Drs. Thomas Kearn... | <urn:uuid:bd3bdc2c-d920-444d-ba4b-9117f2268f3b> | 2.921875 | 225 | Listicle | Science & Tech. | 39.80907 |
Data reported by the weather station: 84510 (LEJR)
Latitude: 36.75 | Longitude: -6.06 | Altitude: 27
Weather Jerez de la Frontera aeropuerto
|Main||Year 1985 climate||Select a month|
To calculate annual averages, we analyzed data of 364 days (99.73% of year).
If in the average or annual total of some data is missing in... | <urn:uuid:271f2f5a-84fa-464c-8a60-559def2fcbd2> | 2.734375 | 372 | Structured Data | Science & Tech. | 70.489641 |
Downslope flow of ash and rock debris resulting from volcanic activity.
Mount Rainier - Living Safely With a Volcano in Your Backyard [ More info] One of our Nation's most dangerous volcanoes, Mount Rainier has been the source of countless eruptions and volcanic mudflows, and many people live in the areas that will be ... | <urn:uuid:1d44e32d-6100-4d50-a6e7-4bde92e553b6> | 3.4375 | 223 | Content Listing | Science & Tech. | 47.430158 |
This is a picture of the meteorite ALH84001.
Click on image for full size
The possible discovery of Life on Mars
In July, 1996, it was announced that Dr. David McKay, along with a team of
scientists at Johnson Space Center (a division of NASA), had discovered
possible fossils of bacteria
in a meteorite named ALH84001 t... | <urn:uuid:b640ee83-19bb-48dc-8201-4712cf7f20a7> | 3.65625 | 790 | Knowledge Article | Science & Tech. | 52.81512 |
Some of the excited engineers and staff on landing day.
Click on image for full size
Jet Propulsion Laboratory, Pasadena, CA
Headlines declare: Mars Pathfinder Lands on July 4th
The Mars Pathfinder was launched in December 1996 on a Delta II rocket. The spacecraft entered the atmosphere on July 4th, 1997, where a heat ... | <urn:uuid:43c31644-f9fc-411b-9637-7c907444076c> | 3.359375 | 600 | Content Listing | Science & Tech. | 66.699393 |
EXPERIMENT TITLE: What Does It Matter?
CONCEPT(S): Relationship between mass and volume.
VIDEO SEGMENTS (click the links below to view):
LESSON PLAN: Lesson plan (PDF)
Teacher’s Domain Video- Density and Buoyancy: Testing Liquids
Science Education Resource Center at Carleton College- How do I calculate density?
Suite10... | <urn:uuid:1bb83001-2bfb-4b11-bd8b-684d54c58b78> | 3.15625 | 99 | Truncated | Science & Tech. | 38.532143 |
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For 300,000 years, protons and atomic nuclei continued to roam about in a almost totally opaque sea of photons, electrons and neutrinos--opaque because the photons couldn't travel far without bumping into another particle. Any electron that combined with a proton o... | <urn:uuid:f64a6704-8f6e-4fbd-80c1-c48fb6548a9c> | 3.703125 | 380 | Knowledge Article | Science & Tech. | 38.617235 |
| Forward | Back | Up | Map | Glossary | Information |
Astrophysicists are using increasingly sophisticated arrays of ground-based and space-borne instruments to look out and back to the most distant (and oldest!) regions of the universe. They're constructing a map of the large-scale organization of the universe that i... | <urn:uuid:91ac13fb-106b-49aa-8c82-f8cfd36a3bf6> | 3.984375 | 1,510 | Knowledge Article | Science & Tech. | 36.55357 |
flash wrote:Assuming the atmosphere extends to 100 miles, a vertical dive at 60,000 mph gives only 6 seconds to vaporize before it hits the surface. That doesn't seem to be a lot of time. But then the energy is proportional to v2 and 60,000 squared is a big number.
Exactly. The huge forces mean there's no way for a bod... | <urn:uuid:e0f373e4-6463-41ee-9086-69312dac0acf> | 3.453125 | 427 | Comment Section | Science & Tech. | 61.408421 |
The stunning video below, shows large leptocephali filmed by divers at three locations within the Indonesian Archipelago from 2009 to 2011.
The observations were made from December to April in Lembeh Strait adjacent to north-eastern Sulawesi Island, at Ambon Island and at Bali.
The leptocephali are about 300 - 400 mm l... | <urn:uuid:08ecbdcf-7cae-42f4-b74c-05a3c1603594> | 2.921875 | 332 | Knowledge Article | Science & Tech. | 28.765 |
GG cilia have GC-G
image by Cambrian Liu
Many cells from all eras of evolution, from bacteria to humans, possess specialized tails called cilia that can perform a variety of functions. In bacteria, cilia can be used to provide locomotion and structural support. In zebrafish, cilia are used to model organs asymmetricall... | <urn:uuid:6af3514a-2260-4346-8a12-a91f7a7f8348> | 3.4375 | 184 | Knowledge Article | Science & Tech. | 38.542378 |
Given the large amount of science news published online and in print each day, it's always nice to find follow-ups on the relatively obscure topics posted here.
And so I smiled earlier today when I saw on ScienceDaily an article about the latest research on CoRoT-7b, the fast-orbiting exoplanet some 500 light years awa... | <urn:uuid:2be4da8b-78b7-430f-8b8e-8d01b370de7d> | 3.4375 | 558 | Personal Blog | Science & Tech. | 30.165303 |
As I mentioned earlier, I’m teaching a first-year seminar this semester called “Science or Nonsense?” On Monday and Wednesday this week we discussed some math/stats/numeracy topics. We talked about the Sally Clark murder trial, the prosecutor’s fallacy, the use of DNA testing in law enforcement, Simpson’s paradox, the ... | <urn:uuid:94e7ed6b-06db-4381-b32d-727f411609d7> | 2.96875 | 681 | Personal Blog | Science & Tech. | 59.157768 |
The Sepiidae have a tropical/temperate distribution. They are mostly shallow-water animals although they are known from depths of about 600 m (Lu and Roper, 1991). They have an unusual biogeographic pattern (seen below, in white) in which they are absent from the Americas. Young, et al. (1998) suggest that by the time ... | <urn:uuid:78a3518a-3379-4e1a-a4a0-ced53c377ead> | 3.078125 | 131 | Knowledge Article | Science & Tech. | 57.03902 |
hastable uses some hash function on an object to store.
This hash function essentially calculates the position of the object in the table.
If we use a
HashMap and the size can not fit more elements then these collections are resized to accomodate more elements.
This means that each stored element must be rehashed to ca... | <urn:uuid:838f38d3-2c68-4a58-824d-eb1a764dd8d4> | 2.71875 | 190 | Q&A Forum | Software Dev. | 43.283691 |
Three colour (BVI) image of a distant overdense region of galaxies taken by the Hubble Space Telescope. The image is focused on a spiral galaxy similar to the Milky Way but located at z = 1, i.e. 8 billion years ago. Twice the mass of the Milky Way, it has a star formation rate thirty times higher due to the surroundin... | <urn:uuid:90294861-e4f1-45b9-9aac-99e6354a73a0> | 3.265625 | 661 | Content Listing | Science & Tech. | 39.680907 |
Equals and hashcode methods are two primary but yet one of most important methods for java developers to be aware of. Java intends to provide equals and hashcode for every class to test the equality and to provide a hash or digest based on content of class. Importance of hashcode increases when we use the object in dif... | <urn:uuid:79ea8e4f-a415-48ee-8a0c-60a5be5736e6> | 3.5 | 944 | Personal Blog | Software Dev. | 41.86727 |
This is an intriguing question, I have read many different opinions but nothing to clearly substantiate their claims. Others in the Scientific arena when pressed are afraid to give an answer. Checking the JPL data which is an ephemeris produced by the Jet Propulsion Laboratory shows that Jupiter certainly doesn’t orbit... | <urn:uuid:695750c9-91ac-466c-ab8e-968a49cf2bb1> | 2.71875 | 2,091 | Personal Blog | Science & Tech. | 45.871252 |
|Google Maps shows you the Cape Verde Islands in|
relation to the rest of the Eastern Atlantic Basin
Typically we end up with approximately two Cape Verde type storms per season. July, August, and September are the prime months for development, but we can see them in June and October as well. Katia and Ophelia were cla... | <urn:uuid:2b10e986-5445-48d6-8160-686b745bfc5a> | 2.765625 | 389 | Personal Blog | Science & Tech. | 42.252231 |
by Dan Lester
|If humans could get close to the planetary surface, perhaps just in orbit above it, truly cognitive teleoperation could be achieved at multiple sites with high-quality virtual presence.|
This vision seriously colors the public view of space robotics in ways that are less than constructive. While Spirit a... | <urn:uuid:45ccad84-8f79-44fe-99ea-33dc8b125689> | 2.90625 | 1,417 | Nonfiction Writing | Science & Tech. | 40.448367 |