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This summer has seen prolonged drought and record heat across much of the United States. Such extremes often lead to the question whether these events were caused by climate change. Scientists usually tend to answer this question with ‘no’, pointing out that the climate system is chaotic and that it is not possible to ... | <urn:uuid:2eb9ad73-feff-465f-90aa-0c4ebdf15d5a> | 4.0625 | 439 | Nonfiction Writing | Science & Tech. | 47.932778 |
News, discoveries, and investigations from the worlds of science and health
In a paper published in Cell recently, scientists from the US and Thailand have, for the first time, successfully produced embryonic stem cells from human skin cells. That sounds interesting, but what are stem cells and where do they come from?... | <urn:uuid:7c82837d-9ac6-4b34-b7df-529af5ba12b6> | 3.140625 | 591 | Content Listing | Science & Tech. | 53.155071 |
I can conclude that axioms, for any system, are barriers, but also a connection boundaries between any two worlds that are axiomatically defined. I will keep the examples of Physics, as World # 1, with its own axioms and Laws, and Mathematics, as World # 2, with its own axioms. So, if these systems are separated and ar... | <urn:uuid:3dad0023-4f7f-4f64-9b98-2f9a858982e2> | 3.171875 | 1,305 | Personal Blog | Science & Tech. | 45.754571 |
Hard-hitting new German historical study uncovers fundamental flaws woven into the infant science of climatology. UN man-made global warming researchers misapply radiation laws, contradicting their use by all other branches of science.
German environmentalist and climate analyst, Dr. Matthias Kleespies, researching for... | <urn:uuid:4d3589fe-0d85-4ee0-87e7-923928e63825> | 3.125 | 707 | Personal Blog | Science & Tech. | 33.851369 |
Some observers and vendors, especially vendors of small
telescopes, claim that large apertures are useless or
even counter-productive under heavy light pollution.
In my opinion, and the opinion of most experienced
observers, there is essentially no truth to this claim.
If anything, satisfactory deep-sky observing requi... | <urn:uuid:315380d1-efb1-488c-888c-7fc43a5e048a> | 2.796875 | 1,006 | Personal Blog | Science & Tech. | 39.047075 |
If progenitors of quasars or protogalaxies form at high redshifts (larger than 10), then the millimeter domain is the best place to detect them (Loeb 1993; Braine 1995). Both continuum and line emission could be detected, provided enough sensitivity, with about 10 times more collecting surface as present ones (either w... | <urn:uuid:e71e1529-f9d3-4ffb-9775-226b4ef8b055> | 2.78125 | 1,148 | Academic Writing | Science & Tech. | 54.72055 |
Gills in Air
Is it possible for a fish to absorb any Oxygen from the
air at all? I have been told that it was, and would like some clarification.
Gills are more efficient than lungs in taking oxygen out of water or
air. The catch is that the gill filaments are so delicate they dry out
very quickly in air and become per... | <urn:uuid:ad750f8a-dc56-4c70-bcd7-eb25846e9603> | 2.765625 | 96 | Q&A Forum | Science & Tech. | 52.857895 |
Regional & Whole-Earth Structure
Earth structure taken from 'Earthquakes' by Kaye Shedlock and Louis C. Pakiser.
Seismology is the study of earthquakes and the Earth using seismic waves. From recordings of earthquake-generated waves, information about the earthquake source may be derived, including its magnitude, locat... | <urn:uuid:7330cdc7-8013-45e4-8b7a-2e7475ee5b80> | 3.90625 | 312 | Knowledge Article | Science & Tech. | 21.2125 |
As recreational boaters gear up for a summer of fun on coastal waters and the Great Lakes, NOAA is testing MyNOAACharts, a new mobile application that allows users to download NOAA nautical charts and editions of the U.S. Coast Pilot.
NOAA presented to the U.S. Coast Guard today a new report that finds that 36 sunken v... | <urn:uuid:3d16b4d2-cb16-4ae7-a028-74197ae62c62> | 2.734375 | 277 | Content Listing | Science & Tech. | 56.472397 |
Drilling Into Lake Vostok
Russian scientists hope this week to drill into lake Vostok, a lake buried beneath the ice of Antarctica. And not just a lake, Lake Vostok is one of the largest bodies of fresh water in the world, about the size of Lake Ontario, but about three times as deep. It’s covered by two miles of Antar... | <urn:uuid:47e41023-4831-4396-8ddd-0b72fccbfffd> | 2.890625 | 1,064 | Personal Blog | Science & Tech. | 52.462133 |
1. The authors note that the lunar surface partially depolarizes the light. Wouldn't this happen much more with light coming from very far that has hit multiple potentially depolarizing surfaces? Light could also be depolarized by dense atmospheres or by interstellar media like dust grains and ice grains. More interest... | <urn:uuid:6c3b2c3f-5d0e-40f0-b003-f20def035abe> | 3.5625 | 358 | Comment Section | Science & Tech. | 36.833312 |
|Articles & Tutorials|
|AS3 - Setting up a password input field|
|Sunday, 16 October 2011 13:51|
In this tutorial, I'll explain how to set up a password input text field, including password check.
So, first of all, we need to create a new TextField variable.
Then, do this in the Document Class constructor. Along with a... | <urn:uuid:81ce97a6-e8ef-41e0-8d1d-d2d4d86dc1fc> | 2.9375 | 414 | Tutorial | Software Dev. | 62.979319 |
Brainless slime mould has an external memory
Slime moulds use a form of spatial "memory" to navigate, despite not having a brain, a study has found.
Scientists in Australia studied the organisms in an experiment normally used to test robots.
They found that the slime mould could navigate around a U-shaped maze to a foo... | <urn:uuid:14fb1e9a-de8e-4d02-b0ae-0e32a4aae785> | 3.3125 | 850 | Truncated | Science & Tech. | 40.731361 |
GleicheniaceaeArticle Free Pass
Gleicheniaceae, the forking fern family, containing 6 genera and about 125 species, in the division Pteridophyta (the lower vascular plants). This relatively primitive family has a long fossil history dating back to the Jurassic Period (199.6 million to 145.5 million years ago). The exta... | <urn:uuid:e00a2e85-fe39-4a59-a0b0-30f1a6b2cbde> | 3.890625 | 338 | Knowledge Article | Science & Tech. | 43.064286 |
- Regulation of Streptomyces development: reach for the sky!
Trends in Microbiology, Volume 14, Issue 7, 1 July 2006, Pages 313-319
Dennis Claessen, Wouter de Jong, Lubbert Dijkhuizen and Han A.B. Wösten
AbstractStreptomyces coelicolor is characterized by a complex life cycle and serves as a model system for bacterial ... | <urn:uuid:1b562f5a-e024-48d5-86b5-677f2ec0f513> | 2.765625 | 890 | Content Listing | Science & Tech. | 34.746445 |
Full name: zeptonewton
Plural form: zeptonewtons
Category type: force
Scale factor: 1.0E-21
The SI derived unit for force is the newton.
1 newton is equal to 1.0E+21 zeptonewton.
Valid units must be of the force type.
You can use this form to select from known units:
I'm feeling lucky, show me some random units
The SI ... | <urn:uuid:b5785b9f-3b10-42f7-8657-ec4eceef508b> | 2.78125 | 219 | Structured Data | Science & Tech. | 63.469444 |
Department of Natural Resources
About Frogs !
Frog | Spring Peeper | Pickerel
Frog | Wood Frog | Blanchard
Cricket Frog | Gray Frog |
Green Frog | Leopard
Frog | Bullfrog | American
Illinois Frog and Toad Facts
toads do not cause warts.
Illinois anuran is the bullfrog, Rana catesbeiana,
which can attain a snout-to-vent... | <urn:uuid:944d7457-db98-413e-87a7-6f5509020750> | 3.46875 | 497 | Knowledge Article | Science & Tech. | 57.916409 |
Let's think about gravity and gravitywheels. Gravity is a force pulling together all matter, and things that have a lot of matter such as planets pull more strongly. So the more mass an object has, the heavier it is.
But distance comes in to it too; it depends on how far you are from something, how strong the attractio... | <urn:uuid:1cfd6aa6-d0e9-4d21-9916-b854cb7d373f> | 3.65625 | 1,298 | Personal Blog | Science & Tech. | 44.139517 |
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 359.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
A latex balloon, wall thickness 3.091 x... | <urn:uuid:8b0eb9a6-7f45-4bc1-88ec-034b6c0e7c47> | 2.703125 | 225 | Content Listing | Science & Tech. | 81.585373 |
First, we collected hourly data from ECONET stations in North Carolina. Overall, there are currently 37 ECONET stations across the state; however 15 of the stations either didn't have enough data, or had too many bogus observations. We ultimately kept the stations that had at least 7 years of data, as that would give u... | <urn:uuid:e1130a3e-cb04-4771-be28-1d5054006028> | 3.171875 | 204 | Documentation | Science & Tech. | 36.408395 |
SUNLIGHT glinting off alien oceans may help astronomers spot water on other worlds.
Darren Williams of Pennsylvania State University, Behrend, and Eric Gaidos of the University of Hawaii at Manoa modelled the way a distant planet would reflect light towards Earth as it orbits its star. They showed that when a wet plane... | <urn:uuid:c9ab0f05-4363-4b78-bbcd-cfff867d81b1> | 4 | 193 | Truncated | Science & Tech. | 50.85986 |
In 2010-2011, the annual rainfall for Northland varied from 90 percent to 160 percent of the mean annual rainfall for the region. More rain was recorded in eastern areas throughout the year. Generally, the region received average to above average rainfall for the year.
The map below shows the annual rainfall recorded f... | <urn:uuid:4aef225d-ad0d-4b6b-a25d-1be1690d67bf> | 2.9375 | 229 | Knowledge Article | Science & Tech. | 37.356538 |
Mike Newhall wrote:
> 1. What are "plane 14 language tags"?
they are a mirror set of the ascii graphic characters to what iso 10646 calls plane 14. plane 14 means for unicoders that the code points are from U+e0000 to U+effff - note that hex 'e' is decimal 14. these characters are used for tagging when you don't have m... | <urn:uuid:12b31d1d-559a-4eb5-a71a-008b866e133f> | 3.203125 | 608 | Comment Section | Software Dev. | 55.608535 |
In science news today, this just in: Saturn has yet another ring. Of course Saturn's primary rings are it's most well-known feature, this one is distinctly different in that it is far, far larger in scale, at an 8 million mile radius, or 50 times further out than the inner rings, and inclined roughly 27 degrees from th... | <urn:uuid:37e082fc-e381-4366-b1ae-ebabb30d0fd9> | 3.484375 | 501 | Personal Blog | Science & Tech. | 52.33343 |
Ramaswami, Geetha and Sukumar, R (2011) Woody plant seedling distribution under invasive Lantana camara thickets in a dry-forest plot in Mudumalai, southern India. In: Journal of Tropical Ecology, 27 (Part 4). pp. 365-373.
Woody_plant.pdf - Published Version
Restricted to Registered users only
Download (458Kb) | Reques... | <urn:uuid:013f9b5e-89ea-4d0e-b086-893102200a26> | 2.703125 | 549 | Academic Writing | Science & Tech. | 29.965738 |
You can copy a file quite easily. It's done with the File class of System.IO. Let's see how. First create a new folder on your C drive. Give it the name copiedFiles.
Add a new button to your form. Double click to get at the code, and set up the following files and directory paths:
string fileToCopy = "C:\\test1.txt";
s... | <urn:uuid:18d8569c-c11a-47a5-9a26-adbd49486062> | 3.3125 | 697 | Tutorial | Software Dev. | 69.439857 |
On 2011/10/11 02:22 PM, Rik Wasmus wrote:
>> Just to clarify having key indexes of (a,b) or (b,a) have no difference ?
> They DO.
> See it as lookup table which starts with 'a' in the first case, and 'b' in the
> second one. Looking for anything that matches 'b' for an index (a,b) requires
> a full scan as you don't kn... | <urn:uuid:e5e2b2c7-24c8-463e-9d97-1ac88dc5df59> | 2.96875 | 405 | Comment Section | Software Dev. | 70.032029 |
See also the
Dr. Math FAQ:
See also the
Browse High School Trigonometry
Stars indicate particularly interesting answers or
good places to begin browsing.
Selected answers to common questions:
Volume of a tank.
- Simplifying Trigonometric Expressions [9/13/1995]
A student asks for help simplifying and solving trigonomet... | <urn:uuid:13d85be5-8c32-4799-90be-b2b2461b3c19> | 2.859375 | 1,804 | Q&A Forum | Science & Tech. | 88.591545 |
In 1961, Yuri Gagarin became the first person to reach outer space and orbit the Earth. But Gagarin's flight may not have been possible without the help of many brave, furry astronauts that went into space before him. Throughout the 1950s and 1960s, the Soviet Union launched dozens of dogs into space to test flight con... | <urn:uuid:db21576a-b2b1-48f7-a4e7-2445fdfffc05> | 3.640625 | 535 | Knowledge Article | Science & Tech. | 52.625754 |
Selene blasts off for the Moon
Sep 14, 2007
The most sophisticated spacecraft to study the Moon in more than 30 years was launched today by JAXA, the Japanese Aerospace Exploration Agency. Called Selene, the mission will help scientists understand the Moon’s origin and evolution, and possibly even locate a site for a f... | <urn:uuid:d8f5f34c-3e57-4ab6-9844-f6f3f6527872> | 3.0625 | 570 | Truncated | Science & Tech. | 41.93157 |
Free Search (1445 videos)
Greenhouse in Space - Paolo Nespoli launching the project at ISS
- Title Greenhouse in Space - Paolo Nespoli launching the project at ISS
- Released 04/03/2011
- Length 00:20:24
- Language English
- Footage Type Interview
The Greenhouse in Space is an educational project by ESA involving schoo... | <urn:uuid:7295456d-2617-4aeb-9346-a7f8579d1d9c> | 2.765625 | 258 | Truncated | Science & Tech. | 24.43829 |
Large smoke plumes were produced by the Blackjack complex fire in southeastern Georgia's Okefenokee Swamp on May 8, 2002. Smoke from the fires, (which contributed to hazy skies across much of north Florida) is apparent in this image pair from the Multi-angle Imaging SpectroRadiometer. The fires started in late April, a... | <urn:uuid:efa74b84-877a-413d-817b-bbc60273d63a> | 3.640625 | 396 | Knowledge Article | Science & Tech. | 50.319234 |
Garden spider (Araneus diadematus)
|Size||Male length: 4-8 mm (2)|
Female length: 10-13 mm (2)
The garden spider is widespread and very common (1).
The garden spider (Araneus diadematus) is a very common, large orb-web spider (1). The colour is variable, ranging from pale yellow to blackish-brown (2), with pale marking... | <urn:uuid:8e33240f-aba0-4e41-a4cb-da41f8c349f1> | 3.46875 | 1,116 | Knowledge Article | Science & Tech. | 63.376272 |
Hydrogen Hints to History of Mars Water
Much controversy surrounds the origin, abundance and history of water on Mars. The sculpted channels of the Martian southern hemisphere speak loudly of flowing water, but this terrain is ancient. Consequently, planetary scientists often describe early Mars as "warm and wet" and c... | <urn:uuid:84d1beeb-7cb6-4158-8cc8-f68ce37f46e4> | 4.15625 | 623 | Knowledge Article | Science & Tech. | 22.333216 |
|Multiple temperature inversion layers, abnormally warmer air above cooler, produced the mock-mirage. The setting sun's rays are refracted by the unusual atmospheric density gradients to produce multiple images. Watch the video to see the topmost solar image 'A' slowly sink. Within the main inversion layer the upper so... | <urn:uuid:1b3a02b4-54e0-4559-bb4c-409f43373f90> | 3.015625 | 139 | Truncated | Science & Tech. | 43.5595 |
This page from the University of Tennessee details several ways the weather is affected by the Earth's rotation. It includes explanations of the Coriolis force, major wind patterns, and how cyclones are formed, complete with helpful diagrams and animations.
The University of Tennessee. Consequences of Rotation for Weat... | <urn:uuid:7737dede-a355-4e6f-bf98-fedcb19df6be> | 3.390625 | 229 | Knowledge Article | Science & Tech. | 56.807989 |
Climate change is mostly thought of as an overall warming of the planet along with localized changes and more drastic weather events. Higher high temperatures, lower low temperatures, heavier rain and snowfalls, and longer periods of drought, as well as other sharp weather events. But there could also be longer term tr... | <urn:uuid:6faa73d0-84bc-4ec8-929d-994ae3850796> | 3.84375 | 340 | Knowledge Article | Science & Tech. | 40.54875 |
Although you may not know it, you almost certainly use seaweeds in your everyday life.
Extracts from seaweeds are used in many products, including in shampoo, toothpaste, cosmetics and medicines, and in foods.
Seaweeds are at the base of the marine food chain. Like plants on land, they photosynthesise, turning the sun'... | <urn:uuid:e0a11b8a-61d5-423f-baf6-51f637723596> | 3.640625 | 287 | Knowledge Article | Science & Tech. | 51.221713 |
Shortly before our crazy biker pulls the reverse-Knievel—jumping far past the landing area instead of far short—we hear one of his compatriots shout, “You can go twice as fast!” This is a faulty hypothesis, as it turns out, but to the layman it would seem to make sense. After all, our biker had previously executed a gr... | <urn:uuid:09ef9b2e-8b29-4df2-b86a-ec6dd3cf8cd7> | 3.109375 | 418 | Truncated | Science & Tech. | 59.551232 |
Ultrabright Gamma-ray Burst "Blinded" NASA Telescope
2010 07 15
A flash of light that likely signaled the birth of a black hole was so bright it briefly blinded a NASA telescope—even though the light came from five billion light-years away.
From its orbit around Earth, the Swift telescope has been scanning the skies si... | <urn:uuid:3928f2e8-2047-49ac-a847-2c40e961e68c> | 3.609375 | 1,391 | Content Listing | Science & Tech. | 55.386732 |
Discontinuous layer of water at or near the Earth's surface. It includes all liquid and frozen surface waters, groundwater held in soil and rock, and atmospheric water vapour. Virtually all of these waters are in constant circulation through the hydrologic cycle. Although the components of the hydrosphere are undergoin... | <urn:uuid:b281e075-1dff-428a-b37d-1a9f8504ed06> | 4.125 | 241 | Knowledge Article | Science & Tech. | 41.915403 |
Date: March 24, 2009
We all heard stories about Earth pollution very often and one of the biggest problems is air pollution. It looks like people are aware that the air we breathe contains gases, which are produced mostly by vehicles that we drive (about 60% of all carbon monoxide emissions and up to 95% in cities!) So... | <urn:uuid:985ea5a9-a30a-44c3-b7c2-ee5d0569d4cb> | 2.796875 | 165 | Personal Blog | Science & Tech. | 53.945625 |
CLIMATE CHANGE EFFECT ON NITROGEN TRANSPORT AND ALGAL GROWTH
This project focused on the most important processes regulating the amount of nitrogen transported from land; arable-soil leaching, water discharge and nitrogen retention. In addition, the eutrophication problem with high algal-concentrations was explored for... | <urn:uuid:ee93f3f6-ca2a-459d-976b-45ee69ce8bf7> | 2.71875 | 855 | Academic Writing | Science & Tech. | 49.761472 |
What are Coral Reefs?
Coral colonies are made up of many tiny individual coral animals which create a skeleton made of rock that makes the structure we think of as coral reefs. These animals have many tiny plants living inside their cells which provide the coral with energy to survive and grow. Corals can supplement th... | <urn:uuid:d9447f67-1f37-4a30-87aa-fe6e13ee5af2> | 3.9375 | 1,012 | Knowledge Article | Science & Tech. | 41.394091 |
It has been an interesting year: An extremely brilliant supernova type Ia was observed in near cosmic space with an exceptionally long lightcurve. It was also revealed (via the planetary data system) that the descent profile derived for the Huygens probe did not use the altimeter, sonic or accelerometer data as planned... | <urn:uuid:ec8d9d37-8148-4c4a-b477-11dbf17a5e23> | 2.71875 | 1,079 | Comment Section | Science & Tech. | 33.22025 |
||This article needs additional citations for verification. (January 2009)|
Specular reflection is the mirror-like reflection of light (or of other kinds of wave) from a surface, in which light from a single incoming direction (a ray) is reflected into a single outgoing direction. Such behavior is described by the law ... | <urn:uuid:a585fd5c-e212-48e8-bd22-b874d0163213> | 4.125 | 1,070 | Knowledge Article | Science & Tech. | 34.441573 |
|SUNSPOTS 太阳黑子 (tàiyánghēiz ǐ)
The chart above is of modern sunspots. Sunspots were first observed and recorded in China during the Shang Dynasty (~1700 BC to ~1027 BC). In the I Ching, a very early observation of sunspots was recorded as "three suddenly bursting fires eating a chunk of the sun."
Shi Shen (石申 Shí Shēn)... | <urn:uuid:b5c3c30d-248f-453f-9f11-78740ccc54af> | 3.734375 | 1,175 | Knowledge Article | Science & Tech. | 62.854038 |
States and Shapes
States of Matter
Please also see bonding for information relating to this.
You must know the difference between solids liquids and gases by now so I won't patronise you, but there is some additional information. enthalpy of fusion is the energy needed to loosen forces holding particles together to go ... | <urn:uuid:ee0567a6-b50d-4d00-ab23-3379ae10bff3> | 3.859375 | 416 | Knowledge Article | Science & Tech. | 37.582941 |
Forest Growth and the Global Carbon Cycle
More than any other kind of vegetation, forests capture vast amounts of atmospheric carbon dioxide and store it in live and dead woody tissues (especially in stems and roots) and in forest floor and soil organic matter. But different forest types and developmental stages accumu... | <urn:uuid:eb87e67a-c426-45fc-88d7-147fcfffe36a> | 3.390625 | 155 | Knowledge Article | Science & Tech. | 25.896667 |
What is gravity really?
What is gravity really?
Because of gravity, if you drop something, it falls down, instead of up. Well, everybody knows that! But, what does this really mean? What is gravity?
Gravity has played a big part in making the universe the way it is. Gravity is what makes pieces of matter clump together... | <urn:uuid:3d68cd38-d3c4-45f7-8708-3a9951b135ca> | 3.390625 | 540 | Knowledge Article | Science & Tech. | 56.20451 |
When a molecule receives a proton, it is called the conjugate acid of the original molecule. For example, NH4+ is the conjugate acid of NH3. NH4+ and NH3 are a conjugate acid-base pair. One can be transformed into the other by undergoing a simple acid-base reaction.
The conjugate acid acts as an acid, with a strength i... | <urn:uuid:2b6dfe55-2f62-4149-a3fb-993da4212fff> | 3.53125 | 116 | Knowledge Article | Science & Tech. | 51.088056 |
We all know that climate changes and melting of ice caps and glaciers cause rise in water level. Recent study has shown that excessive usage of water by humans is also affecting sea level. During the latter half of the twentieth century, water level rose about 1.8 millimeters per year. This data was recorded from the t... | <urn:uuid:b3f151cd-2e2b-46df-960f-69e1450dda83> | 2.921875 | 132 | Personal Blog | Science & Tech. | 50.854341 |
Every Java program (no matter how simple or complex) contains a fundamental structure. The simplest thing you can do in a Java program is print some text.
This tutorial focuses on:
- Java program core code
- Printing text
- Including comments in Java code
Java program core code
Fundamental structure of a Java program c... | <urn:uuid:e771b269-2f5c-414d-b86e-22d04db80714> | 4.34375 | 408 | Tutorial | Software Dev. | 52.847619 |
AN OLD mystery over a rare, carnivorous plant which traps and kills insects but appears to possess no enzymes with which to digest them has finally been solved.
Alan Ellis and Jeremy Midgley, botanists at the University of Cape Town, claim that the plant, Roridula, relies on a tiny bug living on its leaves to digest it... | <urn:uuid:e3437733-ff71-4575-a964-c6cfa5f14268> | 3.5 | 218 | Truncated | Science & Tech. | 52.530048 |
Get flash to fully experience Pearltrees
Even very young children perform rudimentary experiments in order to learn about the world.
Theoretical physics is a branch of physics which employs mathematical models and abstractions of physics to rationalize, explain and predict natural phenomena .
A unit of measurement is a... | <urn:uuid:98674a34-b8fe-4295-9aac-683ab4752194> | 3.546875 | 396 | Content Listing | Science & Tech. | 28.505641 |
The Perl documentation has two different things that both end up being casually called "list": "list values" and "list literals". A "list literal" is that comma-ish thing that turns into the comma operator in a scalar context (last value wins). A "list value" is the result from executing an operator in a list context. ... | <urn:uuid:89582366-01ff-4c8c-af8f-994880a18645> | 3.046875 | 426 | Comment Section | Software Dev. | 73.57295 |
Earth Sciences is the study of the Earth and its neighbours in space. It deals with the origin, composition, and history of the planet as well as the physical, chemical, and biological processes that have changed and shaped it over the past 4.5 billion years.
Throughout history, humankind has viewed the planet we live ... | <urn:uuid:d77e949b-31bf-4185-870c-82995be4ee79> | 3.4375 | 202 | Knowledge Article | Science & Tech. | 40.659929 |
The National Hurricane Center located in Miami, Florida has six lists of names.
They use one list per year and rotate the list every sixth year.
Each list includes a name from letters in the alphabet.
They use letters A through P, R, S, T, V, and W.
These lists of names will be used over and over again.
If a particular... | <urn:uuid:39344992-11ec-4797-8ed6-a711c2883fbd> | 3.15625 | 198 | Knowledge Article | Science & Tech. | 51.651136 |
The McMurdo Dry Valleys of Antarctica are considered one of the least hospitable places on Earth; NASA has used them to simulate conditions that might prevail on Mars. The area gets little precipitation, and the water that is present is locked into ancient, thick glaciers that have been in the area for longer than mode... | <urn:uuid:20847ab4-fb77-426c-b7a6-477f0229de04> | 4.46875 | 736 | Truncated | Science & Tech. | 38.870735 |
Newton wrote more about alchemy than math and science combined.
Sir Isaac Newton is certainly one of the greatest scientists of all time. His most notable achievements include:
• Pointing out the force of gravity
• Designing a version of the telescope which is still in use today
• Creating equations for measuring the m... | <urn:uuid:591d41e5-5494-40a8-bacd-9315b3955a82> | 3.0625 | 384 | Personal Blog | Science & Tech. | 46.657222 |
Python is the best scripting language which I found it out perform Bash script as well as Lua. I like python’s scripting syntax, which is make sense and very convenient in string manipulations. Its now come to binary format manipulation, how convenient is python?
I have carry out some research on python into writing bi... | <urn:uuid:72103864-aa22-4764-9f4c-8ad2f247d50b> | 2.90625 | 390 | Personal Blog | Software Dev. | 73.950191 |
Algae and Cu
Name: Loretta L Lamb
What would be an easy to accomplish easy to understand
method to test algae and/or other microorganisms in
a pond water mini-environment (a gallon jar that
contains pond water and sediment along with various
naturally occurring populations) for the presence of copper
in the food chain?... | <urn:uuid:801fa74f-c412-4024-9301-4d1a6b03036a> | 3.03125 | 430 | Q&A Forum | Science & Tech. | 51.226453 |
The family of graphs of x^n + y^n =1 (for even n) includes the
circle. Why do the graphs look more and more square as n increases?
Draw graphs of the sine and modulus functions and explain the
The sine of an angle is equal to the cosine of its complement. Can
you explain why and does this rule extend beyond angles of 9... | <urn:uuid:07086768-bbd3-487f-aa64-62ecee44167e> | 3.0625 | 231 | Content Listing | Science & Tech. | 65.428163 |
September 2012 was a record-setting month for both of Earth’s poles, but for different reasons: sea ice in the Arctic fell to a record low minimum extent after a summer of melting while Antarctic sea ice froze to a record high extent during the South Pole winter. Is record Antarctic sea ice canceling out the losses in ... | <urn:uuid:c44688cb-caa1-4fdd-9a39-d71d0d6bdc61> | 3.65625 | 789 | Knowledge Article | Science & Tech. | 42.496802 |
Recently, I was teaching an undergraduate chemistry lab and we did an experiment where copper (I) oxide was oxidized to make copper (II) oxide. Some of the students reported seeing a green flame and they asked me what it was.
When you heat copper ions, the energy "excites" electrons and pushes them into higher energy l... | <urn:uuid:a9e6fa63-8203-4fae-8593-8af9d65f62ca> | 3.046875 | 138 | Q&A Forum | Science & Tech. | 42.396885 |
Chapter 1 of API Design
Guideline 1. Design objects for people, not for computers
by Bill Venners
Part 3 of 21
Besides complexity, another fundamental challenge
of software development is change. If a software project doesn't
fail initially, the resulting code base tends to have a long life.
With each new release comes... | <urn:uuid:3f33c3b1-a5e5-4295-8391-1dcbbc06f4c4> | 3 | 579 | Tutorial | Software Dev. | 34.92579 |
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.
any of the bats belonging to the genera Myotis (little brown bats) or Eptesicus (big brown bats). Both are vesper bats, and both are widely distri... | <urn:uuid:b45c3f8b-1f52-41fd-a59b-a73990b5eefe> | 2.796875 | 115 | Knowledge Article | Science & Tech. | 58.43146 |
Posted on 21/4/07 by Tim Koschützki
Today I feel like writing about one of the most important topics concerning php development: refactoring. Make sure you check the other articles in the Refactoring Category. They will contain examples of refactorings and the like.
Refactoring is the process of changing a software sys... | <urn:uuid:cbffc2b6-f471-408e-89b6-2cafd6df9a0e> | 3.015625 | 565 | Personal Blog | Software Dev. | 55.419488 |
Executes an IO computation with asynchronous exceptions masked. That is, any thread which attempts to raise an exception in the current thread with Control.Exception.throwTo will be blocked until asynchronous exceptions are unmasked again.
The argument passed to mask is a function that takes as its argument another fun... | <urn:uuid:82928b27-cfc6-4ce2-aa1e-dfa71fd83428> | 3.25 | 966 | Documentation | Software Dev. | 42.561228 |
measurements of the Martian orbit taken by the Danish astronomer Tycho Brahe led Kepler to conclude in 1609 that the planets follow elliptical paths around the Sun. At approximately that time, images from the first astronomical telescope inspired Galileo to propose that the planets are worlds in their own right and tha... | <urn:uuid:8cd23331-72ec-4c45-ba14-353605c4c9e6> | 4.1875 | 440 | Knowledge Article | Science & Tech. | 26.576217 |
Protecting Water Quantity: Streamflow and Sustainability
Throughout the world, water quantity issues are becoming more urgent, with some regions lacking sufficient water supplies and others dealing with an overabundance leading to flooding. Here in our watershed, streams and rivers are prone to both low flow and floodi... | <urn:uuid:c5d87f50-4133-4aa4-8a27-4336cfeefa6b> | 3.4375 | 375 | Knowledge Article | Science & Tech. | 23.365541 |
British physicist David Tyler discusses
the recent claims for the possibility of new species of finch developing on the famous Galapagos Islands - a possibility because the authors don’t think they are there yet, and they may never be. Tyler explains,
An ecological theory of speciation but no support for Darwinism
The ... | <urn:uuid:d040d36f-7ced-47a3-acdf-4757d9967a8c> | 3.5625 | 783 | Personal Blog | Science & Tech. | 48.110237 |
Super-Kamiokande, or Super-K for short, is a neutrino observatory in the city of Hida, Gifu Prefecture, Japan. The observatory was designed to search for proton decay, study solar and atmospheric neutrinos, and keep watch for supernovas in the Milky Way Galaxy.
The Super-K is located underground in Kamioka Mining and S... | <urn:uuid:12c89089-a5c4-4f1f-a3ef-67ecf1a1213e> | 3.5 | 856 | Knowledge Article | Science & Tech. | 34.41342 |
|home/solutions around the world/research/ground truthing|
Satellites reveal many objects on the Earth’s exterior from their vantage point in space, but until recently they’ve never been able to accurately detail what is BENEATH the surface of the ocean. In this film, a team of scientists ‘ground truth’ an innovative u... | <urn:uuid:f86ab187-9f68-4840-97aa-5ec44647e452> | 4 | 428 | Content Listing | Science & Tech. | 57.217245 |
For the team: M.Ashley, R.Garrido, G.Handler, L.Mantegazza, A.Nitta, E.Poretti, O.Prouton, E.Serkowitsch, R.Shobbrook, D.Sullivan, W.Zima
Investigators researching Delta Scuti stars have to live with a smaller number of detected pulsation frequencies than the astronomers studying white dwarfs and PG 1159-035 stars. For... | <urn:uuid:64dd6c0d-b431-495a-96b3-91c392151983> | 2.75 | 1,560 | Knowledge Article | Science & Tech. | 49.963026 |
Discoid cockroaches, used in this study, can be up to 3 inches long.
From the digestive system that demolishes glue and toothpaste comes the first living, breathing, digesting cyborg-insect power source. Researchers have created a fuel cell that needs only sugar from the cockroach’s hemolymph (basically the cockroach v... | <urn:uuid:ed54bd20-e594-4e69-9614-bef5c1adb4f6> | 3.234375 | 283 | Knowledge Article | Science & Tech. | 34.795903 |
To Answer what causes the blobs on the Gold– Scan different sample
posted by: lrose
Since Val and Lauren found the large objects , Dr, Kadel suggested we look at another substance that was irradiated. So Graphite is available and Molybdenum disulfide is also available. We tried Graphite first. Even though the Carbon at... | <urn:uuid:9b6482aa-f3b6-458d-b2a1-7f2f831d4188> | 2.828125 | 287 | Comment Section | Science & Tech. | 56.449563 |
There's surely an easier way to do #5 . . . but here's my solution.
| / \
/ | \
/ | \
C * | \
- - - - - + - - - * - - - * - -
| (4,0) \
The center of the circle is .
Since the circle is tangent to the line at point ,
. . the radius at is perpendicular to the line.
The center lies along this perpendicular.
The line is: ... | <urn:uuid:719d115a-03ee-4245-a252-74d758c44d1b> | 3.09375 | 206 | Tutorial | Science & Tech. | 70.474214 |
Neutrinos are produced in a variety of decays and interactions. For example, a neutron decays into a proton, an electron, and an anti-neutrino. In fact, it was through careful observation of radioactive decays that physicists hypothesized the neutrino's existence.
For example, when a neutron decays into an electron and... | <urn:uuid:8cd09ae0-c853-4ee1-8a76-2ec982cb35a6> | 3.875 | 144 | Knowledge Article | Science & Tech. | 42.848616 |
Lekelia D. Jenkins, a postdoctoral researcher at the University of Washington, writes from Ecuador, where she is studying factors in the cross-cultural adoption of marine conservation technologies like turtle excluder devices and circle hooks. She co-leads this project with Patrick Christie, who is an environmental soc... | <urn:uuid:21d96a5c-2723-4e9e-83be-8e4a1e733811> | 2.890625 | 443 | Personal Blog | Science & Tech. | 43.058057 |
So conservation biologists from theSmithsonian Tropical Research Institute netted six toucans from a rainforest near Gamboa, Panama, and strapped on lightweight backpacks containing a GPS tracker and an accelerometer. The backpacks recorded location and activity level, and were designed to fall off after 10 days.
By ma... | <urn:uuid:0a15caaf-5ac3-4036-87d3-2dd116e33e57> | 3.3125 | 214 | Personal Blog | Science & Tech. | 23.669048 |
Phytophagous insects may impose natural selection on plants, which favors resistant plant genotypes and drives the evolutionary diversification of plant species. However, the rapid evolution of plant traits that confer resistance to herbivores (such as aphids) is not for free. As assessed in Science by Züst et al. the ... | <urn:uuid:b580cd3a-a891-4255-aa83-50c5fc57fa8e> | 3.28125 | 568 | Academic Writing | Science & Tech. | 29.733149 |
Science Fair Project Encyclopedia
Carrageenan, is a family of linear sulphated polysaccharides typically obtained by alkali extraction from red seaweeds. It is named after Irish moss (Chondrus crispus, also known as Carrageen moss), which is called carraigín in Irish. It was originally isolated from this alga in 1844.
... | <urn:uuid:cc55d1c0-8dbe-468d-8249-36a09f5e4777> | 3.28125 | 776 | Knowledge Article | Science & Tech. | 25.779083 |
Discounting Greenhouse Gas Effects in the Distant Future-BECKER
Under present scientific calculations, environmental damage from global warming at current rates of CO2 emissions will be large, especially during the latter half of this century and throughout the next few centuries. With such long delayed effects, uncert... | <urn:uuid:42bee436-c918-41af-9cc2-1041da1f6558> | 3.34375 | 1,238 | Personal Blog | Science & Tech. | 31.05559 |
NASA or National Aeronautics and Space Administration.
Why send plants into space? Plants are of special interest to space biologists because of the profound effect gravity has on orienting plant growth. Scientists want to know how gravity is perceived by the plant and how to compensate for the effects of microgravity ... | <urn:uuid:c22b555d-028d-4950-a19d-fcdb357d4553> | 4.0625 | 792 | Content Listing | Science & Tech. | 25.795837 |
Decompose a time series into seasonal, trend and irregular components using moving averages. Deals with additive or multiplicative seasonal component.
decompose(x, type = c("additive", "multiplicative"), filter = NULL)
- A time series.
- The type of seasonal component. Can be abbreviated.
- A vector of filter coefficie... | <urn:uuid:35c6da54-18b4-4cdd-a5bd-0688fffbe784> | 3.140625 | 568 | Documentation | Software Dev. | 73.546618 |
The Learmonth Solar Radio Spectrograph observes the radio emmission of the Sun from 25 MHz to 180 Mhz. Solar radio spectrograph display radio bursts or "sweep" events. These are classified into particular types. A "Type II" spectral burst is believed to be due to plasma emmission that occurs following the passage of a ... | <urn:uuid:de028e7b-ebdf-47e9-855c-9bd64c763cd9> | 3.046875 | 211 | Knowledge Article | Science & Tech. | 25.597012 |
Distinctive asymmetrical ejecta surrounds a 140 meter (459 feet) diameter crater in the lunar highlands. The crater is located on the northeastern rim of the eroded crater Hommel. Image width is 600 meters (1,969 feet). The top of the image faces north. Credit: NASA/Goddard Space Flight Center/Arizona State University
... | <urn:uuid:1684182c-0989-47f4-ba98-e4cd4613a401> | 4.5 | 298 | Knowledge Article | Science & Tech. | 44.846923 |
50, 100 and 150 Years Ago; November 2006; Scientific American Magazine; by Staff Editor; 1 Page(s)
RESEARCHING "THE GAME"--"Our working hypothesis was that when two groups have conflicting aims--i.e., when one can achieve its ends only at the expense of the other--their members will become hostile to each other even th... | <urn:uuid:517dcaf7-c0c0-4cc7-8fac-020a11a16f39> | 2.734375 | 390 | Truncated | Science & Tech. | 49.144924 |
Early this morning physicists announced the discovery of a large new particle in the reams of data collected at the Large Hadron Collider in Switzerland. Is it the much sought-after Higgs boson? If so, here’s why that would be significant.
However the scientists have not said whether it’s actually the Higgs, because th... | <urn:uuid:476bb993-5440-49c2-8a70-d19e1084076d> | 2.828125 | 763 | Audio Transcript | Science & Tech. | 56.537027 |
A steroid is a terpenoid lipid that is characterized by having a carbon
skeleton formed from four fused rings. The rings typically are arranged in a 6-6-6-5 manner. Steroids are distinguished from each other based on the functional groups
that are attached to the rings.
Examples: estrogen, progesterone, testosterone, c... | <urn:uuid:8e086462-634a-4920-86bb-67395449747b> | 3.09375 | 107 | Structured Data | Science & Tech. | 63.617843 |
Magnesium burns extremely bright. Do not look directly at the flame.
Chemicals and Solutions:
Two 1L Erlenmeyer flasks
bunsen burner and matches
Make a steam bath by heating a small amount of water in an Erlenmeyer flask on a hot plate.
Holding a wooden splint with tongs, ignite it and place it in the boiling water. It... | <urn:uuid:70bd9039-2fe2-4747-a074-d8fb19b1d1a8> | 3.203125 | 209 | Tutorial | Science & Tech. | 65.901385 |
Earthquake & Volcano Stress Triggering
We study how one earthquake or volcanic event sets up the next by the transfer of stress, and we measure how earthquakes and volcanoes deform the earth's surface.
The origin and prevalence of triggered seismicity and remote aftershocks are under debate. As a result, they have been... | <urn:uuid:18530d38-db43-4eda-9967-34833f113cfb> | 3.171875 | 327 | Academic Writing | Science & Tech. | 42.193571 |
structure in Python
tjreedy at udel.edu
Tue Oct 21 05:10:51 CEST 2003
"Alberto Vera" <avera at coes.org.pe> wrote in message
news:mailman.279.1066691640.2192.python-list at python.org...
I have the next structure:
How Can I make it using Python?
How Can I update the value of 6?
How Can I insert a key called "C" and its... | <urn:uuid:8b3572aa-9851-4df3-b68f-50313ecf87ec> | 2.9375 | 175 | Comment Section | Software Dev. | 78.151587 |
About This Project
About This Project || What is a Tessellation? || Tessellation Tutorials || Tessellation Links
Tessellations have intrigued me since I began teaching 9th grade mathematics in 1990, as a topic that attracts the attention of a wide range of students. Tessellations are easily found everywhere in homes, f... | <urn:uuid:de6ea281-b934-4989-9a87-3132ca2527d3> | 3.859375 | 548 | Knowledge Article | Science & Tech. | 32.000969 |
Find the equation of plane which contains the line , and makes the angle of with the plane .
Actually don't have any idea so I need your help.
One given you can already use:
There's given the plane makes the angle with the plane , in general the angle between two planes is given by the formula:
Where and are the coordi... | <urn:uuid:2e5488bf-93eb-46f9-8a04-1faac9716c80> | 3.140625 | 149 | Q&A Forum | Science & Tech. | 53.849709 |
The Reference Frame: RSS AMSU: 2012 was 11th warmest year
As the preliminary data published two months ago indicated, the satellite temperature record RSS AMSU has indeed concluded that the year 2012 was the 11th warmest year on their 34-year-long record, rather close to the median.Global Warming Benefits Ratsnakes - S... | <urn:uuid:5486f3b1-6612-4269-b54c-cc4c90378a01> | 2.8125 | 287 | Personal Blog | Science & Tech. | 57.075804 |
was a balloon-borne instrument dedicated to measuring the Cosmic microwave background (CMB) temperature anisotropies. The study of this radiation is essential to obtain precise information on the evolution of the Universe
The Universe is commonly defined as the totality of everything that exists, including all matter a... | <urn:uuid:22ce9810-3bd2-45c4-90e1-0cbd167e20e4> | 3.78125 | 977 | Knowledge Article | Science & Tech. | 41.98316 |
Sunday 19 May
Galapagos coral (Polycyathus isabela)
What’s the World’s Favourite Species?Find out here.
Galapagos coral fact file
- Find out more
- Print factsheet
Galapagos coral description
A rare coral found only around the islands after which it is named, Polycyathus isabela generally forms low colonies in which th... | <urn:uuid:daac71da-214e-4e68-adb3-1178e53f6615> | 3.796875 | 1,480 | Knowledge Article | Science & Tech. | 28.102578 |
|Why does this Martian rock have so much zinc?
Roughly the size and shape of a
tilted coffee-table, this oddly flat, light-topped rock outcropping was chanced upon a few weeks ago by the
robotic Opportunity rover currently rolling across Mars.
Early last month Opportunity reached
Endeavour crater, the largest surface f... | <urn:uuid:88bbe77d-9133-4dcc-a88e-5b7ca8b2637c> | 3.46875 | 241 | Content Listing | Science & Tech. | 25.602305 |