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Charles E. Griswold
Flies were collected generally using hand held aerial nets sweep nets ,and stationary flight (malaise) traps. Perhaps 100 specimens were collected. An effort was made to collect three target groups for immediate study. Acroceridae (‘small headed flies’ are a primitive group of brachyceran flies that... | <urn:uuid:a49659e9-5640-4975-9618-294d55e3895d> | 3.28125 | 171 | Academic Writing | Science & Tech. | 20.21188 |
Gravity and Extreme Magnetism Small Explorer
Mission Project Home Page - http://gems.gsfc.nasa.gov/
The Gravity and Extreme Magnetism Small Explorer (GEMS) did not pass its confirmation review in 2012 and never moved into the development phase.
GEMS would have used an X-ray telescope to measure the polarization of the ... | <urn:uuid:d54790e0-c377-4708-95c9-a3d89ecd9f06> | 3.90625 | 307 | Knowledge Article | Science & Tech. | 46.197912 |
(x2 + xy + ax - b2)2 = (b2 - x2)(x - y + a)2
Dürer calls the curve 'ein muschellini' which means a conchoid, but since it is not a true conchoid we have called it Dürer's shell curve (muschellini = conchoid = shell).
This curve arose from Dürer's work on perspective. He constructed the curve in the following way. He dr... | <urn:uuid:b12f5cba-20ca-4cf7-a26c-44e5010f5f67> | 3.6875 | 375 | Knowledge Article | Science & Tech. | 74.239535 |
- Sunspots [2.74 mb]
Sunspots are visible evidence of
much larger magnetic activity and structures on the Sun. Extreme
ultraviolet and X-ray images of the Sun (all taken the same day)
reveal magnetic activity unseen in the visible spectrum.
- The Dynamic Sun [3.58 mb]
The rotating Sun seen in
extreme ultraviolet light ... | <urn:uuid:b307539f-e447-4e2e-bdd1-c41e457f558d> | 3.5 | 659 | Content Listing | Science & Tech. | 60.679267 |
Having obtained a or, more compactly a , we can compute the probability of any point in the vector space5.2. However, evaluating the pdf in such a manner is not necessarily the ultimate objective. Often, some components of the vector are given as input () and the learning system is required the estimate the missing com... | <urn:uuid:d237c068-a227-49bb-bba5-de15ac730bba> | 3.328125 | 1,117 | Academic Writing | Science & Tech. | 36.955134 |
Csóka, György and Kovács, Tibor (1999): Xilofág rovarok - Xylophagous insects. Hungarian Forest Research Institute. Erdészeti Turományos Intézet, Agroinform Kiadó, Budapest, 189 pp.
Mn: Nagy nyárfacincér / En: Large poplar longhorn
22-31 mm. Occurs in Europe, in the Caucasus and Siberia. Widespread in Hungary but only ... | <urn:uuid:f942f33e-b29f-470c-b2d4-6756c946db16> | 2.78125 | 325 | Knowledge Article | Science & Tech. | 57.422928 |
If f is a function from a certain set A to the same set A, then for any x in A, f(x) is also an element of A. Consequently, it makes sense to apply f to the element f(x). If we do this, we obtain another element of A, which could be denoted by f(f(x)). Similarly, we could apply f to f(f(x)), to obtain f(f(f(x))). If we... | <urn:uuid:37161fa6-cc50-49fa-807f-9bb06fc62ab6> | 3.609375 | 1,267 | Knowledge Article | Science & Tech. | 76.298674 |
3. The sun is about 863,700 miles wide. It is about 110 times wider than the Earth.
4. The sun is the center of our solar system which is located on the edge of a spiral arm called Orion's Arm, and is one-half to two-thirds of the way (28,000 light-years) from the center of our Milky Way galaxy.
5. The sun is mostly hy... | <urn:uuid:df39c02d-04e0-42f3-ab30-2d9b76d1ae7c> | 3.734375 | 257 | Listicle | Science & Tech. | 83.780357 |
The following HTML text is provided to enhance online
readability. Many aspects of typography translate only awkwardly to HTML.
Please use the page image
as the authoritative form to ensure accuracy.
Predicting Invasions of Nonindigenous Plants and Plant Pests
traits. Cody and Overton (1996) described the reduction in ... | <urn:uuid:480d6e10-9cd9-459b-ba84-1707e2b84a0c> | 3.578125 | 655 | Knowledge Article | Science & Tech. | 21.195548 |
Chandra Discovers Relativistic Pinball Machine
This extraordinarily deep Chandra image shows Casseiopeia A (Cas A, for short), the youngest supernova remnant in the Milky Way. New analysis shows that this supernova remnant acts like a relativistic pinball machine by accelerating electrons to enormous energies. The blue... | <urn:uuid:4992cb4a-3116-4bdb-a3f6-38e720864685> | 3.171875 | 145 | Truncated | Science & Tech. | 36.912857 |
SCRAPS of food could soon be helping power your home, thanks to an ultra-cheap bacteria-driven battery. Its developers hope that instead of feeding the dog or making garden compost, organic household waste could top up your home's electricity.
Although such "microbial fuel cells" (MFCs) have been developed in the past,... | <urn:uuid:afc862a4-0aca-4769-aa15-b3ad590e586f> | 3.0625 | 216 | Truncated | Science & Tech. | 47.152063 |
As i walk the beach at Seal Rock State Park, I observe numerous tide pool enthusiasts enjoying the colorful anemones and leathery sea stars. Beachcombers sort through the proverbial seashells on the seashore, but I notice everyone ignores “the wrack”—the salad-like heap of seaweeds cast upon the beach. Well, almost eve... | <urn:uuid:79dfdd30-d683-4a16-9428-ad9ed03e10b1> | 2.71875 | 1,088 | Nonfiction Writing | Science & Tech. | 41.090983 |
Strandline - secrets of the seashore
Amongst the seaweed and debris on the strandline, various animal eggs and egg cases may be washed ashore. These provide clues to how various marine animals protect their eggs to help increase the chance of their young surviving. These include the leathery egg cases of rays, dogfish ... | <urn:uuid:dc52bc1f-89d5-43e4-a861-c7d48e150bef> | 3.640625 | 659 | Knowledge Article | Science & Tech. | 55.360674 |
Crossing the Barrier; June/July 2006; Scientific American Mind; by Grit Vollmer; 6 Page(s)
Paul Ehrlich had just injected aniline dye--used to color blue jeans--into a rat's bloodstream. For years the immunologist had been working on ways to stain cells so they would be more visible under a microscope, and aniline look... | <urn:uuid:8d916ea2-c32e-4551-ae5f-f0904062bffa> | 3.4375 | 245 | Truncated | Science & Tech. | 47.375643 |
Information contained on this page is provided by NewsUSA, an independent third-party content provider. WorldNow and this Station make no warranties or representations in connection therewith.(NewsUSA/American Chemical Society) - Chemistry plays a critical role in most of life's daily activities, but we tend to take it... | <urn:uuid:b21781fa-12c1-43fb-bb88-0d9e679862c4> | 3.03125 | 107 | Truncated | Science & Tech. | 22.891241 |
Some Frost/Freeze Knowledge
By Stephen Gode on September 25, 2012, 11:29am
Use your ← → (arrow) keys to browse more stories.
In the map above, the 10% probability of 32°F or less on an earlier date for most of interior Connecticut is highlighted for September 15th to October 1st. The extreme northeast and northwest por... | <urn:uuid:17b78aac-2eea-4788-ae4b-a091927af6f9> | 2.890625 | 634 | Tutorial | Science & Tech. | 39.607177 |
Coastal Habitat Loss
Homes, jetties, seawalls, canals, and other structures built on beaches or wetlands often destroy habitat for sea turtles, birds, fish, and other sea life. Salt and tidal marshes, wetlands, mangroves, and coral reefs also suffer when development is unsustainable.
Wetlands, mangroves and sea grasses... | <urn:uuid:9e12b050-7887-4812-8a3a-655df94bced5> | 3.625 | 405 | Knowledge Article | Science & Tech. | 27.450476 |
The Great Observatories Origins Deep Survey (GOODS) : An Observational Legacy for Studying Galaxy Evolution
Prof Marc Dickinson
The following was written during the final plenary talk of the first day at the American Astronomical Society Meeting in St Louis. I was going to post as we went along, but the wireless connec... | <urn:uuid:e3394fbf-44d6-4f70-9ded-3f8db620e875> | 2.953125 | 1,694 | Personal Blog | Science & Tech. | 48.536495 |
The Galilean transformation is used to transform between the coordinates of two reference frames which differ only by constant relative motion within the constructs of Newtonian physics. This is the passive transformation point of view. The equations below, although apparently obvious, break down at speeds that approac... | <urn:uuid:7cd0d19d-f1b6-4df1-951b-391e76219d4b> | 4.125 | 1,082 | Knowledge Article | Science & Tech. | 53.0349 |
If You Build It
Constructed wetlands provide an ideal solution for dealing with stormwater in increasingly urbanized environments
- By Scott D. Wallace
- Apr 01, 2006
Stormwater managers around the country are challenged by growing regulatory requirements in the face of increasingly urbanized land uses. As cities conti... | <urn:uuid:0cceb033-26cc-4928-9025-40aa70c09135> | 3.25 | 1,944 | Knowledge Article | Science & Tech. | 33.187785 |
at this LINK...
Published: October 31, 2009 3:00 a.m.
a compendium of research findings from Harper’s magazine:
•As honeybees continued to vanish from their hives, researchers supported by the National Honey Board pointed to pesticide accumulation in beeswax as a contributing factor in Colony Collapse Disorder. The res... | <urn:uuid:6c6cb009-a526-47c5-88fa-4e36fbf20592> | 2.796875 | 437 | Comment Section | Science & Tech. | 40.775092 |
Michael Fowler 10/29/07
As a warm up to analyzing how a wave function transforms under rotation, we review the effect of linear translation on a single particle wave function . We have already seen an example of this: the coherent states of a simple harmonic oscillator discussed earlier were (at t = 0) identical to the... | <urn:uuid:c324d6ac-1799-4759-9cfd-a10718ffbbca> | 3.109375 | 2,579 | Academic Writing | Science & Tech. | 32.05525 |
National Geographic has an article "Taming the Wild" by Evan Ratliff on the now famousunder-the-radar experiment by a renegade Soviet geneticist, who had been previously sent to the Gulag by the Lysenkoists, to breed a domesticated silver fox that would be a amiable as a dog
In fact, says Anna Kukekova, a Cornell resea... | <urn:uuid:78f8beff-32a9-4149-9674-7a19c5846185> | 3.28125 | 1,615 | Personal Blog | Science & Tech. | 44.250835 |
Temperatures of about 20 000°K with ion densities ranging from 1017 to 1018 cm−3 have been produced in helium by means of explosive‐driven shocks. Helium was used because of its relatively simple structure, but this choice eliminated usual shock methods because of the high sound speed and high ionization potential. Sho... | <urn:uuid:40426c7a-ebf0-4326-94cc-47175818991b> | 3.203125 | 226 | Academic Writing | Science & Tech. | 23.01375 |
What orbits the Earth at 17,500 miles per hour, is 360 feet wide, 260 feet long and has a crew of 3? It is the International Space Station, also known as the I.S.S. It is going to be finished in the year 2006. The countries that are putting it together are the United States, Russia, Japan, Canada, Brazil, Austria, Belg... | <urn:uuid:991becfd-9c85-4bda-9c57-df0359bc1e99> | 3.109375 | 913 | Knowledge Article | Science & Tech. | 79.164163 |
If I have a triangle with the coodinates A(0,0) B (30,0) and C (30,40)
Is the centre of gravity 1/3 of the base and 1/3 of the height?
would this make it (10, 40/3) ??
The area of the triangle is
You now need a triangle such that
The ratio of the main triangle's height to the base is
You need to have or
The center of g... | <urn:uuid:d2de28d5-af2d-45a3-8ec0-c97cb3836c78> | 3.109375 | 155 | Q&A Forum | Science & Tech. | 87.208934 |
Value Changes During Conversions
A conversion from a value type stores a copy of the source value in the destination of the conversion. However, this copy is not an exact image of the source value. The destination data type stores values differently, and even the value being represented might change, depending on the k... | <urn:uuid:6b684080-ff2e-4635-a278-ba4627e2c3ec> | 3.9375 | 308 | Documentation | Software Dev. | 38.686966 |
Blue buttons are just one of the many small critters that live in the oceans. They are often mistaken for jellyfish or colored plastic when they wash up on beaches, but they are actually free-floating colonies of hydrozoa.
Blue buttons have two main parts: the central disk, which is about an inch across and yellow brow... | <urn:uuid:52ae800d-975e-46f0-8834-3fbcad6f5052> | 3.265625 | 284 | Personal Blog | Science & Tech. | 66.892318 |
This video, captured by University of California Santa Cruz professor Giacomo Bernardi, shows an orange-dotted tuskfish (Choerodon anchorago) cracking open a clam by throwing it against a rock. Other fish from the wrasse family have also been observed using similar techniques to crack open clams. These include the blac... | <urn:uuid:d98ea315-e619-4a80-9330-81452be2abf6> | 3.640625 | 288 | Personal Blog | Science & Tech. | 39.102717 |
Sand swimming is a specialized locomotion used by several species of lizards and snakes. The following was posted on the Physics Central website. Be sure to visit the website and view the videos that include a Sandfish (Scincus scincus, Family Scincidae) swimming through sand.
Swimming through sand: The secret of sandf... | <urn:uuid:2ac9a017-4387-4eb6-80fa-7d4b1023efad> | 3.578125 | 1,175 | Personal Blog | Science & Tech. | 55.897858 |
Maxwell's equations are,
Where the vectors are defined in the usual way. Also,
Taking a Fourier transform with respect to the time variable, we have,
See ``Electromagnetics" for more.
The integral form is also commonly given.
Energy of the Field
Power Flow into a Volume
The Poynting vector gives the direction of power ... | <urn:uuid:448ffe15-86a7-4c69-9b74-c88fc9fc3437> | 3.21875 | 224 | Knowledge Article | Science & Tech. | 44.331347 |
Study predicts climate change impacts on polar bear litter size
When little food is available, polar bears are known to rely on stores of energy for survival and reproduction. The reliance on energy stores in pregnant females however, limits the survival rates of their cubs. Using data obtainable under current conditio... | <urn:uuid:1f0566ed-dd9f-4088-9c17-4ed56da0e8bc> | 2.9375 | 196 | Truncated | Science & Tech. | 36.054538 |
Living in a Dying Solar System, Part 2: Delaying Doomsday
With this essay by Ray Villard, news director for the Hubble Space Telescope, Astrobiology Magazine presents another in our series of 'Gedanken', or thought, experiments - musings by noted scientists on scientific mysteries in a series of "what if" scenarios. Ge... | <urn:uuid:cf511a1a-2426-4dab-82bf-a69a7024ffc7> | 3.34375 | 1,381 | Truncated | Science & Tech. | 39.945361 |
PRANBURI, Thailand — They are better known as stealthy killing machines to take out suspected terrorists with pinpoint accuracy. But drones are also being put to more benign use in skies across several continents to track endangered wildlife, spot poachers, and chart forest loss.
Although it is still the ‘‘dawn of dron... | <urn:uuid:a2ea5cb7-8637-43d9-921a-e1c65fda8b44> | 2.859375 | 1,138 | Truncated | Science & Tech. | 28.120323 |
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.
atmosphere and precipitation
...the formation of liquid cloud droplets or ice crystals depends on which phase of water occurs. A cloud in which on... | <urn:uuid:4fb2a480-a18d-4fe5-b8b9-9ddee6f3c2b5> | 3.25 | 147 | Knowledge Article | Science & Tech. | 63.48 |
Infrared imaging is only one example
of using wavelengths other than visible light to gather
information about Earth. Most satellites today measure
energy at many wavelengths. This is called multispectral
imaging. Images taken at different wavelengths can be
combined to make composite images by displaying the
image for... | <urn:uuid:dc90912d-2556-4ed4-8619-ee870ba84896> | 3.765625 | 277 | Tutorial | Science & Tech. | 35.079603 |
This short program shows how a live video stream from a web cam (or from a video file) can be rendered in OpenGL as a texture. The live video stream is captured using the Open Source Computer Vision library (OpenCV). The program also shows how an OpenCV image can be converted into OpenGL texture. This code can be used ... | <urn:uuid:f9e668ca-a721-497d-9301-f636606e067e> | 3.171875 | 389 | Documentation | Software Dev. | 38.182208 |
Taken from Issue 22.
Although seemingly beautiful and serene, this fiery image shows the hundreds of millions of stars at the turbulent heart of the Milky Way, all cocooned in cosmic gas and dust. The life of such a star is visible in its entirety, from the dusty regions of star birth, populations of young stars, agein... | <urn:uuid:c005a996-9085-43b1-aaca-635b3aae2363> | 3.375 | 392 | Truncated | Science & Tech. | 38.360385 |
Unit 4: Ecosystems // Section 8: Evolution and Natural Selection in Ecosystems
As species interact, their relationships with competitors, predators, and prey contribute to natural selection and thus influence their evolution over many generations. To illustrate this concept, consider how evolution has influenced the fa... | <urn:uuid:3a412859-2e69-4fc2-ae43-aa9d74142f38> | 4.4375 | 1,137 | Academic Writing | Science & Tech. | 25.005611 |
Cod Food Web
I was again amazed with the infinite ramifications of scale-free networks and the applications of this recent knowledge. Led by a few short citations in the books I’ve been reading, I started researching complex networks in the context of food webs, particularly marine food webs – binary feeding relationsh... | <urn:uuid:b41507b0-7a47-499d-9384-6d6482385dac> | 2.734375 | 753 | Academic Writing | Science & Tech. | 30.22648 |
Canadarm can't even move itself -- on earth
The Canadarm can move some heavy stuff in space, but it can't even move itself on earth.
"Meant for a weightless environment, Canadarm cannot even lift itself off the ground in Earth's gravity. A special test room was built to allow the arm to flex its joints under operating ... | <urn:uuid:1c4a1a6f-8a18-44ca-9895-3f040c1d4d1e> | 3.125 | 104 | Comment Section | Science & Tech. | 42.620183 |
Why We Use Telemetry
Telemetry helps scientists study animals where they cannot directly observe them. Ushagat Island, Alaska, home to Steller sea lions, sea otters, killer whales, and harbor seals is one of these isolated places. These marine mammals are connected with each other in food webs that affect their surviva... | <urn:uuid:aef2a324-1f6a-41f5-bf92-ce510afedf35> | 3.25 | 463 | Knowledge Article | Science & Tech. | 43.171416 |
Space Weather throughout the Solar System
The Sun is surrounded by a "bubble" in space called the heliosphere. In a sense, we Earthlings live within the outer atmosphere of our Sun. The solar wind fills the heliosphere with energetic particles and magnetic fields, extending the outermost reaches of the solar atmosphere... | <urn:uuid:21c6f858-147a-44b0-a4c4-52cc6b7a4353> | 4.0625 | 423 | Knowledge Article | Science & Tech. | 38.998178 |
Overfishing has already depleted the populations of many fish in coastal regions and on the continental shelf. As a result, fishing's moved ever deeper into the oceans. Unfortunately, in the dark and cold, fish grow slowly, and some species take as long as humans do to reach reproductive age. A study reported in the Ne... | <urn:uuid:f24045b5-618a-4350-bf03-3e36fc8485e7> | 3.5 | 409 | Comment Section | Science & Tech. | 38.566522 |
The following sections describe the standard types that are built into the interpreter. These are the numeric types, sequence types, and several others, including types themselves. There is no explicit Boolean type; use integers instead.
Some operations are supported by several object types; in particular,
all objects ... | <urn:uuid:c5049951-372f-4ded-8145-7fd4029b0bb4> | 2.796875 | 97 | Documentation | Software Dev. | 33.528 |
- Fish, Frank E. and Howle, Laurens E. and Murray, Mark M., Hydrodynamic flow control in marine mammals,
INTEGRATIVE AND COMPARATIVE BIOLOGY, vol. 48 no. 6
pp. 788--800 [doi] .
(last updated on 2011/07/03)
Synopsis The ability to control the flow of water around the body dictates the performance of marine mammals ill t... | <urn:uuid:84eab4a6-dedd-4489-9e90-238d134e61f7> | 2.90625 | 341 | Academic Writing | Science & Tech. | 27.720755 |
Day 2: Curriculum Development
Scott Kittelman's talk addressed key tools for in-class experiments related to climate and weather. Through his talk, the difference between an experiment and a demonstration became clear – the simpler the better. Some simple experiments were suggested. For example, latent heat could be de... | <urn:uuid:c66bd2e5-7d00-4a12-81df-6a02efc7ba07> | 3.53125 | 749 | Content Listing | Science & Tech. | 33.512353 |
“About 74,000 years ago,” Lynas began, “a volcanic event nearly wiped out humanity. We were down to just a thousand or so embattled breeding pairs. We’ve made a bit of a comeback since then. We’re over seven billion strong. In half a million years we’ve gone from prodding anthills with sticks to building a worldwide di... | <urn:uuid:f0cef600-6aa9-4baf-8890-e2ffdf936b2c> | 3.8125 | 1,121 | Personal Blog | Science & Tech. | 51.854011 |
5. An 80-Foot-High Tsunami Hits the U.S. East Coast
Imagine a series of tsunami waves racing across the Atlantic Ocean at more than 500 mph, headed directly for the United States. As the tsunami waves near shore, they reach a staggering height of more than 80 feet, inundating the Eastern Seaboard and washing inland sev... | <urn:uuid:ec8160ab-7716-48d2-bc9a-7a40ada181c6> | 3.40625 | 1,386 | Listicle | Science & Tech. | 46.428347 |
[Tutor] my first program
Tue, 15 Feb 2000 06:55:35 -0500 (EST)
This is a little program I designed to test experimental odds against
There is a problem.
After much deliberation, I simplified the formula that I was using to make
the differentiation percentage with, which ended up doing the exact same
thing, just simpler... | <urn:uuid:54bbf4d8-f8ce-48d9-aa1c-d42e9ce5d756> | 2.984375 | 196 | Comment Section | Software Dev. | 71.809345 |
FWC scientists discover new bass species
May 07, 2013
Male panther rescued with sister as kittens in 2011 is released
April 03, 2013
FWC looking for cause of pelican deaths in Brevard
March 19, 2013
Red tide bloom affecting manatees along southwest Florida coast
March 11, 2013
Headed to the beach? Help biologists monit... | <urn:uuid:0b8658ef-5720-4ea4-9edc-89123231dcd4> | 3 | 477 | Content Listing | Science & Tech. | 32.163713 |
This is continuing from the previous post (http://pdg3.lbl.gov/atlasblog/?p=1071), where I discussed how we convert data collected by ATLAS into usable objects. Here I explain the steps to get a Physics result.
I can now use our data sample to prove/disprove the predictions of Supersymmetry (SUSY), string theory or wha... | <urn:uuid:71ef77ec-7651-4656-9b3a-35025b2e33af> | 2.84375 | 1,442 | Personal Blog | Science & Tech. | 50.675205 |
This question really boils down to a more general one:
What degree of photometric precision can be achieved by a smartphone camera?
To put this question in context, let me give a brief explanation of what is fundamentally different about a scientific image sensor versus a consumer grade sensor.
As you would expect, a s... | <urn:uuid:69f397b7-973c-4e83-85fd-31dd8d620bf1> | 2.703125 | 701 | Q&A Forum | Science & Tech. | 37.869417 |
What is the difference between a scalar and a vector?
A scalar is a numerical quantity. .
It has magnitude (size) only.
Examples: A car is moving at 55 miles per hour.. . . . . . . .
A ball is thrown at 30 feet per second.
A vector has magnitude and
Examples: A car is moving at 55 mph to the northeast.. . . . . . . .
A... | <urn:uuid:97e0de6e-bf6c-4dbc-aafe-702c60af7895> | 3.390625 | 172 | Q&A Forum | Science & Tech. | 82.375032 |
A close series of consecutive exposures are combined in this intriguing
composite of the Full Moon slowly crawling,
across the sky.
Beginning on the upper right at 19:42 UT and ending at 22:14 UT on
the sequence follows the Moon from Germany as it passes
through Earth's shadow in a partial lunar eclipse.
Near the top, ... | <urn:uuid:dc543f21-7698-4639-b534-05142a0b5f50> | 3.0625 | 185 | Knowledge Article | Science & Tech. | 54.126009 |
What is 'Java'?
Java is an object-oriented computer language from Sun Microsystems.
Compared to many other languages, such as FORTRAN and LISP, Java is a relative newcomer on the scene. It started out in 1995 as a simple C-like language whose main advantages were automatic garbage collection and the ability to bring we... | <urn:uuid:e0bc4aa7-f12f-4d44-bf18-86b9e6d7b85d> | 3.3125 | 345 | Knowledge Article | Software Dev. | 48.474878 |
Everywhere humans have ever gone, they have left garbage in their wake. This includes space, too. Right now, there are thousands of man-made satellites orbiting Earth, most of which can be classified as space junk. Obviously, with so much floating around space, it is only natural that space program planners are growing... | <urn:uuid:90e82fe4-bab8-472d-b732-7b5d16d292f4> | 3.765625 | 629 | Personal Blog | Science & Tech. | 45.339947 |
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Revision as of 18:52, 9 January 2009
MIDI is a system for control of digital music instruments. The MIDI standard also defines a file format to store such control data. MIDI treats music as a sequence of notes. Audio signal processing is not its purpose.
- MIDI files ... | <urn:uuid:f89c9401-856b-4e1e-8e20-431bdcef11c7> | 2.734375 | 134 | Documentation | Software Dev. | 50.516612 |
he German mathematician and astronomer Johannes Kepler (1571 1630) was an avowed Platonist, and set out early in his professional career to demonstrate that the motion of the planets was circular, in accordance with the established Aristotelian doctrine, and that they could be described in terms of the Platonic solids.... | <urn:uuid:b62dcc74-2b1b-46d3-8b5f-a838e0455cca> | 4.53125 | 611 | Knowledge Article | Science & Tech. | 31.462864 |
Name: Patricia A Marengo
Why does the Sun burn if there is no oxygen in space?
The Sun 'burns' nuclear fuel that does not need oxygen. Nuclear energy
comes in two forms: fission in which heavy elements are broken down into
lighter ones; and fusion in which light elements are 'fused' together to
make heavier elements. S... | <urn:uuid:c328f018-56d2-4d11-9128-680227c12590> | 3.3125 | 85 | Q&A Forum | Science & Tech. | 54.054611 |
Thunderstorms affect relatively small areas when compared with hurricanes and winter storms. The typical thunderstorm is 15 miles in diameter and lasts an average of 30 minutes. Despite their small size, ALL thunderstorms are dangerous! Of the estimated 100,000 thunderstorms that occur each year in the United States, a... | <urn:uuid:bfc957b5-5e03-441d-8c42-bde63cfc9d97> | 3.71875 | 1,758 | Knowledge Article | Science & Tech. | 44.058268 |
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Eric A. Cornell held his Nobel Lecture December 8, 2001, at Aula Magna, Stockholm University. He was presented by Professor Mats Jonson, Chairman of the Nobel Committee for Physics. Summary: Fundamental ideas behind creating Bose-E... | <urn:uuid:bcda4f8f-e2dc-4d6a-8e73-3cc2db858337> | 3.140625 | 189 | Truncated | Science & Tech. | 39.809992 |
News From the Field
Physicists Discover New Way to Visualize Warped Space and Time
April 11, 2011
When black holes slam into each other, the surrounding space and time surge and undulate like a heaving sea during a storm. This warping of space and time is so complicated that physicists haven't been able to understand t... | <urn:uuid:79411a1e-0f93-44b6-9fd9-220782a671f8> | 2.90625 | 293 | Content Listing | Science & Tech. | 70.519789 |
Looking at Cells Under the Energy Microscope
When we discussed heat and entropy, it became crystal clear that thermodynamics is critically important to cells and cell function. Now, let's take a closer look at the involvement of thermodynamics in cellular biochemical reactions. The second law of thermodynamics (yep, it... | <urn:uuid:c7d11ec6-8cdc-4add-b93e-4017f42d452b> | 3.390625 | 758 | Personal Blog | Science & Tech. | 43.792054 |
Amazingly, if we were actually able to convert matter perfectly to energy with 1 kg of matter being completely annihilated, the energy produced from just that small amount of matter is about 42.95 mega tons of TNT. So an adult male weighing in at around 200 pounds has somewhere in the vicinity of 4000 megatons of TNT p... | <urn:uuid:0fb757d5-1dda-4071-a32e-f6d5ea8a994e> | 2.921875 | 282 | Personal Blog | Science & Tech. | 48.091733 |
Extensible Markup Language (XML) is a simple, very flexible text format derived from SGML. Originally designed to meet the challenges of large-scale electronic publishing, XML is also playing an increasingly important role in the exchange of a wide variety of data on the Web and elsewhere. (Taken from the W3C)
XML has ... | <urn:uuid:c0d86c55-418b-4e6c-9fd0-19b66a9befb0> | 2.9375 | 150 | Knowledge Article | Software Dev. | 46.351299 |
Metalastic Wheels (1962)
On 7 November 1962, NASA told the world that it had selected Grumman Aircraft Engineering Company to manufacture the Apollo Lunar Module (LM) manned moon lander. Even before the U.S. civilian space agency tapped the company to build the LM, Grumman engineers had begun to look beyond Apollo. In ... | <urn:uuid:290188cd-53a5-4837-ad54-4f35846feeeb> | 3.96875 | 712 | Personal Blog | Science & Tech. | 39.346636 |
7.5.1 File Objects
Python's built-in file objects are implemented entirely on the
FILE* support from the C standard library. This is an
implementation detail and may change in future releases of Python.
This subtype of PyObject represents a Python file object.
- PyTypeObject PyFile_Type
This instance of PyTypeObject re... | <urn:uuid:c3319340-dbc1-4c87-a5fb-3a7e0384d499> | 2.953125 | 761 | Documentation | Software Dev. | 51.696939 |
A framer wants to enclose a rectangular field by a fence divide it into two smaller rectangular fields by constructing another fence parallel to one side of the field.
The farmer has 3000 yards of fencing. Find the dimension of the field so that total enclosed area is a maximum. (hint let h be the height and w be the w... | <urn:uuid:68427eba-42cf-4f44-8f89-b9b5c014a478> | 3.109375 | 139 | Q&A Forum | Science & Tech. | 60.654868 |
1. make a sketch of the situation (see attachment)
2. A solid with a mass of 25 kg develops a vetrical force of
3. Cable and pole have to develop an uplifting force of the same value. In my sketch this uplifting force is labeled
4. The angle between pole and cable is
5. The cable is pulling upward.
6. The pole is pushi... | <urn:uuid:d2e20a94-79ee-467d-a5b8-f1aae5bf650a> | 3.765625 | 162 | Q&A Forum | Science & Tech. | 83.494714 |
A common feature of the X-ray-bright shells surrounding the radio bubbles shown in Section 2 is that the pressure measured for the shells is approximately equal to that just outside of them. In other words, there is no evidence for a strong shock. Another feature common to many of these objects is that the pressure mea... | <urn:uuid:51615665-d7cc-4c94-8f65-5c6131c8e0ea> | 3.359375 | 508 | Academic Writing | Science & Tech. | 55.804032 |
This image of the northern wall of Coprates Chasma, in Valles Marineris, was taken by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) at 1227 UTC (8:27 a.m. EDT) on June 16, 2007, near 13.99 degrees south latitude, 303.09 degrees east longitude. CRISM's image was taken in 544 colors covering 0.36-3.92 ... | <urn:uuid:a5120a14-43f6-4160-b78f-67e353f2eaed> | 3.640625 | 989 | Knowledge Article | Science & Tech. | 46.85914 |
Science subject and location tags
Articles, documents and multimedia from ABC Science
Monday, 20 May 2013
A recent slowdown in global warming means the harshest climate change predictions are less likely in the immediate decades, say an international team of scientists.
Friday, 10 May 2013
The cooling effect of clouds ... | <urn:uuid:ce616814-bde3-4aad-bec9-b16edcc6bc58> | 2.796875 | 489 | Content Listing | Science & Tech. | 38.656594 |
November 2, 2009
In this paper you will read about Isaac Newton’s three laws of motion.
Sir Isaac Newton was a British physicist. Many people regard him as the greatest physicist of all time. His work is often compared with that of Archimedes and Galileo. The scientific discoveries that he made have given way to new sc... | <urn:uuid:63dce835-f4f2-42e8-9dae-8cc69c889198> | 3.8125 | 428 | Truncated | Science & Tech. | 66.427988 |
What's happened to the setting Sun?
In early 2009, the Moon eclipsed part of the Sun as visible from parts of
Africa, Australia, and Asia.
In particular the above image, taken from the
Mall of Asia
seawall, caught a partially eclipsed Sun setting over
Manila Bay in the
Piers are visible in
silhouette in the foreground.... | <urn:uuid:33bb4ddd-a5bc-40c1-8f4c-b2aed22596f5> | 2.921875 | 187 | Personal Blog | Science & Tech. | 43.1825 |
neuron/wire artificial synapse
lhaarsma at opal.tufts.edu
Fri Sep 20 14:03:14 EST 1996
A few years ago I heard a story in the popular media about
a research group who cultured nerve cells in such a way that
they formed terminals at specific locations, close to electrodes
on a circuit board, allowing some electrical sig... | <urn:uuid:e8c83932-4293-487e-a099-0ffaab08f83b> | 2.75 | 133 | Comment Section | Science & Tech. | 59.07986 |
Virile crayfish (Orconectes virilis
Virile crayfish have been recorded in some lengths of river in the London area, these are the only known populations in the UK. They are not a European species and originate from the USA and Canada. Virile crayfish are likely to be carriers of crayfish plague and can increase in numb... | <urn:uuid:76a1b030-294d-4936-988a-8e5ae97c53b0> | 2.8125 | 223 | Knowledge Article | Science & Tech. | 42.150333 |
provided sufficient work is done to move the pencil from George’s end and the ends are fixed as mentioned before, the only thing that possibly can result from this is that the whole pencil is translated in the direction of the force, including the unperturbed position about which any fexural vibration is occuring. Thus... | <urn:uuid:73f810f5-7c1e-4e1b-9f49-dc2b73096cba> | 2.890625 | 486 | Comment Section | Science & Tech. | 41.847634 |
|Earth Exploration Toolbook Chapter: Analyzing Wetlands|
The Ramsar Wetlands Data Gateway is a database containing information on protected international wetlands. In this activity, users search the database to find a wetland that they are interested in helping to protect. Using the database search capabilities, users ... | <urn:uuid:bc312185-9035-4e50-8c82-0d0e52d668a0> | 3.4375 | 404 | Content Listing | Science & Tech. | 23.446092 |
Superficially, georgiaites look like volcanic glass, or obsidian; however, there was no volcanic activity in or near Georgia 35 million years ago, and georgiaites lack the mineral crystals that characterize volcanic glass. Natural glasses of the same age from Texas, called bediasites, and smaller spherules of glass dat... | <urn:uuid:cc9153e6-534b-454f-900d-4eda7a545869> | 3.625 | 612 | Knowledge Article | Science & Tech. | 40.089119 |
A 3D animation shows the crucial RNA editing step called splicing
Spinal Muscular Atrophy (SMA) is an inherited condition. Humans have two closely related versions of the SMN gene, SMN1 and SMN2. SMN1 is fully functional but SMN2 is only partially functional. SMA occurs when an individual inherits two mutated SMN1 gene... | <urn:uuid:e545580b-c043-4e66-9d28-8fb4669598df> | 3.546875 | 337 | Knowledge Article | Science & Tech. | 50.281913 |
Have you ever come in from a day of sledding or ice skating and sat down for a drink of cold chocolate? Or had a glass of hot lemonade in the summer? Probably not. We use hot water for some things and cold water for others. Have you ever thought about what makes hot water hot and cold water cold?
A water molecule is ma... | <urn:uuid:d8331599-de39-4b09-942a-65cf8bd71206> | 3.796875 | 355 | Knowledge Article | Science & Tech. | 55.946478 |
- Special Report: Syria's Islamists seize control as moderates dither
- Angelina Jolie stunt double sues News Corp over hacking
- Global shares firm, dollar steady before Fed decision
- Kanye West wins over critics with 'daring' new album 'Yeezus'
- Journalist who brought down U.S. general is killed in Los Angeles car ... | <urn:uuid:1ab7c3f4-de49-4606-a527-90de25d1427a> | 2.875 | 822 | Truncated | Science & Tech. | 31.823422 |
Jan. 23, 2013 Amongst the range of domestic livestock species, the goat is not just the 'black sheep' but a resource of survival in impoverished countries, and many breeds are at great risk of disappearing. This is the case according to researchers of the Regional Service of Agro-Food Research and Development in their ... | <urn:uuid:ecd936e4-0a66-40ee-a298-7f118dc214cb> | 3.4375 | 791 | Truncated | Science & Tech. | 29.440504 |
Often seen in backyards, gardens and fields, the American toad is a common and adaptable species found all across the state, limited only by access to water for breeding. Solitary and mainly nocturnal, they are most active during warm, humid weather.
Description: The American toad is 2 to 3.5 inches long, has short leg... | <urn:uuid:69eab1aa-2c11-4dbf-b3f9-4cea9cfaceab> | 3.484375 | 636 | Knowledge Article | Science & Tech. | 55.365333 |
It sounds like magic: walls, curtains, even dresses could be rendered transparent by bathing them in a specially crafted beam of light. Rescuers could use the beam to peer through rubble after an earthquake, while doctors could gaze at a damaged lung after making a patient's skin and ribs vanish.?... At the flick of a ... | <urn:uuid:9cd95e56-9bef-4986-b2f1-29a6c2a223a7> | 3.140625 | 351 | Personal Blog | Science & Tech. | 56.16321 |
Messier 45 is more commonly referred to as the Pleiades, and is the most famous open star cluster among amateur astronomers and the general public alike. Easily visible to the naked eye during the northern Winter, this cluster has been featured in literature over three millennia! Research compilations now suggest that ... | <urn:uuid:f64603c7-23be-466c-8dde-336358fc3424> | 4.03125 | 1,176 | Knowledge Article | Science & Tech. | 39.114084 |
For some of our readers we are getting back to the very basics form in this post. But if you are about to pursing web design either a career or just for a hobby, you must be able to do more than just simply design a pretty page. Today web designers aren’t just the designer anymore they need to become some what a expert... | <urn:uuid:be62d60f-e844-41ae-b964-d1c23b295776> | 3 | 605 | Tutorial | Software Dev. | 56.573572 |
A tiny bit of language support can turn a simple text box into a compact and powerful way to let a user quickly supply complex data. An application can constrain the allowable text to adhere to a small and computer-friendly grammar that mirrors somewhat a natural human language. Even a highly constrained grammar can st... | <urn:uuid:b9e93f21-9573-4395-9103-3168754f00a6> | 3.296875 | 991 | Personal Blog | Software Dev. | 40.571163 |
Lets start from experimental data. What is an electron, what do we know about an electron? It is too small to touch or see or smell. Everything we know about an electron comes from several levels of proxies. We end up measuring a track circle in a magnetic field and get e/m, consistently for different "electrons" and w... | <urn:uuid:27870e59-377f-47c8-9709-38f6a13617e8> | 3.109375 | 660 | Q&A Forum | Science & Tech. | 54.007146 |
This is really weird, New World Post-pandemic Reforestation Helped Start Little Ice Age, Say Scientists:
Stanford University researchers have conducted a comprehensive analysis of data detailing the amount of charcoal contained in soils and lake sediments at the sites of both pre-Columbian population centers in the Ame... | <urn:uuid:047f354a-4227-493c-bb1c-2e4a93320aeb> | 3.015625 | 484 | Personal Blog | Science & Tech. | 21.646522 |
Examples of browser compatibility issues:
3. Misalignment of controls on the web page which looks frustrating to the customer
4. Web page looking cluttered on mobile browsers
Having elaborated on browser compatibility, let us discuss a very popular tool called selenium grid that provides a very easy way to execute mult... | <urn:uuid:73f86c2d-35ca-4ab2-916e-18ca46097632> | 2.796875 | 467 | Personal Blog | Software Dev. | 35.8224 |
AL9 Directive alpine species
Habitats Directive species
The EU Habitats Directive includes 14 species which occur primarily in alpine habitats. One of these species, Arctic Marsh Sedge, can also be found in the boreal region where its conservation status was evaluated as favourable. The rest of the species are restrict... | <urn:uuid:908c5953-85e7-4d75-a5b5-1d8cec451d58> | 3.640625 | 420 | Knowledge Article | Science & Tech. | 34.748272 |
Return to Vignettes of Ancient Mathematics
Definition of faster (Physics Z 2.232a23-7)
Since every magnitude is divisible into magnitudes (for it was proved that it is impossible for a continuous magnitude to be from indivisible ones, but every magnitude is continuoous), then it is necessary that (a) the faster travers... | <urn:uuid:9089b7ed-da51-4a61-b683-29e2d6f99dfb> | 4.21875 | 632 | Academic Writing | Science & Tech. | 68.08438 |
|Themes > Science > Chemistry > Inorganic Chemistry > Acids and Bases > Typical Acids and Bases|
Compounds that contain hydrogen bound to a nonmetal are called nonmetal hydrides. Because they contain hydrogen in the +1 oxidation state, these compounds can act as a source of the H+ ion in water.
Metal hydrides, on the o... | <urn:uuid:f789b874-69c7-4b20-914b-23d675bfbaf6> | 4.125 | 516 | Knowledge Article | Science & Tech. | 36.91588 |
Many different scenarios have been written on achieving a substantial reduction in carbon emissions. In all these scenarios Carbon Capture and Sequestration (CCS) plays a significant role, as the predicted use of fossil fuels will continue to grow. There are two factors that determine the success of large-scale employm... | <urn:uuid:c91562b3-b252-4f66-97da-13b669fe11f7> | 2.875 | 370 | Knowledge Article | Science & Tech. | 28.179277 |
The Horn Antenna at Bell Telephone Laboratories in Holmdel, New Jersey, was constructed in 1959 to support Project Echo--the National Aeronautics and Space Administration's passive communications satellite project.
The antenna is 50 feet in length with a radiating aperture of 20 x 20 feet and is made of aluminum. The ... | <urn:uuid:725ad9a1-5dab-4938-8e7f-631a0e9e4653> | 3.34375 | 2,156 | Knowledge Article | Science & Tech. | 50.574425 |
Oracle Programming with PL/SQL Collections, Page 2
The Varray is short for Variable Array. A Varray stores elements of the same type in the order in which they are added. The number of elements in a Varray must be known at the time of its declaration. In other words, a Varray has a fixed lower and upper bounds, making ... | <urn:uuid:5f3fa543-0e02-4115-a6f8-b789536ee626> | 3.546875 | 1,149 | Documentation | Software Dev. | 36.071512 |
|While it's easy to understand gas pressure
(as gas is heated it expands, increasing pressure, and as it cools, it contracts,
decreasing pressure), magnetic pressure may be a tougher concept to grasp.
David Dearborn explains, "If you take those places where there are
concentrations of magnetic field and put them togeth... | <urn:uuid:c5363477-1926-455e-95a5-04d03bd95a04> | 4.25 | 719 | Knowledge Article | Science & Tech. | 50.919348 |
Núñez Group Research
Biophysics of Bacterial Biofilms
Biofilms are complex microbial communities that grow at interfaces. Bacteria in biofilms are phenotypically different than their planktonic (free swimming) relatives; they adapt to the communal, sessile lifestyle by expressing a specific complement of genes that all... | <urn:uuid:6152325f-a7cf-49c0-8dbe-402801fb01b1> | 2.6875 | 921 | Academic Writing | Science & Tech. | 20.326881 |