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Science subject and location tags
Articles, documents and multimedia from ABC Science
Friday, 14 January 2011
The fossil of a never-before seen species of dinosaur that could have been among the first to roam the planet 230 million years ago has been unearthed in Argentina.
Tuesday, 11 January 2011
Dying young was not ... | <urn:uuid:d2feda84-68d5-4a7f-be13-f00452420e50> | 3.234375 | 578 | Content Listing | Science & Tech. | 32.982655 |
The scientific apparatus was developed by the Ioffe Physics-Technical Institute (FTI), Saint Petersburg. It undertook fundamental astrophysics research in cosmic gamma rays. The mission was conducted in collaboration with NASA. The Konus-A was equipped with a gamma ray detector that allowed localization of astronomical... | <urn:uuid:c5c388ba-fcec-4599-91c8-49de85871932> | 3.140625 | 157 | Knowledge Article | Science & Tech. | 49.125401 |
Return to my Mathematics pages
Go to my home page
Note: If your WWW browser cannot display special symbols, like ² or 2 or ±, then click here for the alternative Pythagorean Theorem page.
© Copyright 1997, Jim Loy
The Pythagorean Theorem states:
In a right triangle, with sides (legs) a and b, and hypotenuse c, then c²=... | <urn:uuid:a21aeaac-db00-44ec-8a97-0de9d812bf2b> | 4.28125 | 2,639 | Personal Blog | Science & Tech. | 71.309367 |
In addition to the symmetries described above, nuclear scientists use a number of other approximate symmetries to describe and predict the behavior of nuclei. Examples of these are charge independence, the expectation that, at the nuclear level, neutron-proton systems should behave the same as proton-proton or neutron-... | <urn:uuid:68814f56-ecfa-4484-80e0-5da274075a30> | 3.921875 | 219 | Knowledge Article | Science & Tech. | 22.916491 |
What Is a Carbon Footprint?
By Susan Kathleen Moran
"I think it's time to move on. Turns out, true love comes in a size 7 1/2 with a four-inch heel."Shoes, $840, Sergio Rossi.
Photo Credit: Karin Catt
What the term means
Its a measure of the total amount of harmful greenhouse-gas emissions that people produce, either d... | <urn:uuid:63c8cb8c-d9b2-4f3f-a0ed-34593cadfd8c> | 2.75 | 426 | Personal Blog | Science & Tech. | 51.341436 |
Selective extraction of gold(III) in the presence of Pd(II) and Pt(IV) by salting-out of the mixture of 2-propanol and water.
- PubMed: 18968825
The mixture of 2-propanol with water has been employed to extract Au(III) along with other precious metals such as Pd(II) and Pt(IV) by using NaCl in the concentration range o... | <urn:uuid:5b9b1ccb-3bbd-48e9-bb06-7bd3c953c579> | 2.703125 | 257 | Academic Writing | Science & Tech. | 79.477202 |
Tsunami: DART II Buoy
This giant Deep Ocean Assessment and Reporting of Tsunamis (DART) buoy was part of a tsunami warning system that consists of almost 40 buoys located in oceans around the world. Pressure sensors located thousands of feet below the buoy on the bottom of the ocean detect the tsunami as it passes by. ... | <urn:uuid:588cb1cc-2a9b-43a8-8c09-354a1dd87b64> | 4.03125 | 217 | Knowledge Article | Science & Tech. | 52.73632 |
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.
Climate Stabilization Targets: Emissions, Concentrations, and Impacts over Decades to Millennia
Maps similar to those in... | <urn:uuid:bdbbefe9-1be2-4328-bccf-bc3916b7e2f8> | 3.015625 | 592 | Academic Writing | Science & Tech. | 25.010195 |
In your article on fingerprints, Stephen Meagher is quoted as saying: "individual fingerprints are effectively unique" (17 September, p 6). Can this be true? Wouldn't identical twins also have identical fingerprints?
The editor writes:
• Although identical twins share the same genes they do not have identical fingerpri... | <urn:uuid:6a0b8b9e-8a0a-4860-9c3f-6e2d9d00dad9> | 3.265625 | 135 | Truncated | Science & Tech. | 43.515833 |
Hello, I would like to do an activity with the cub scouts.
I would like to have them build a telescope. I read up on the
Internet and it appears to be a simple thing, but so far my
telescope is not working. The telescope focuses, but objects in the
distance are not magnified and appear upside down. I am using a
telesco... | <urn:uuid:cf73cfe2-dc28-4801-89b7-124577a6bb69> | 2.921875 | 1,033 | Q&A Forum | Science & Tech. | 66.512013 |
NOAA / Space Weather Prediction Center
The top graph plots the annual average lead time of K6 Short-Term Warnings. Lead time is defined as the time between the warning being issued and when a K6 is measured at the Boulder magnetometer. A missed warning, where a K6 is observed but no warning was issued, is counted as a ... | <urn:uuid:92bdae56-e830-4cc1-a427-544314fed52b> | 2.875 | 255 | Knowledge Article | Science & Tech. | 46.62177 |
|Pomarine Jaeger by Patrick Coin|
After the Superstorm Sandy, pomarine jaegers were found in many places as unlikely as Pennsylvania. Rescued pelicans in Rhode Island were flown back to a place more like their natural home, Florida.
Birds of all stripes follow the wind during their yearly migrations. Sometimes the proc... | <urn:uuid:db63c277-35ba-41dc-bc7e-0543cb922332> | 3 | 359 | Personal Blog | Science & Tech. | 54.728245 |
Python os.fchown() Method
The method fchown() changes the owner and group id of the file given by fd to the numeric uid and gid. To leave one of the ids unchanged, set it to -1.
Note:This method is available Python 2.6 onwards.
Following is the syntax for fchown() method
os.fchown(fd, uid, gid);
fd -- This is the file ... | <urn:uuid:6a8949ae-4a99-41ca-bd10-6d60da27166b> | 2.828125 | 297 | Documentation | Software Dev. | 87.046009 |
One of the things that I want to see before I die is the Aurora Borealis (or its Antarctic equivalent, the Aurora Australis). But if the folks at NASA and the New Scientist are correct, seeing them may be the last thing I do, at least before my and everyone else's world falls apart.
Here's the scenario:
It is midnight ... | <urn:uuid:bff7909a-5efa-402d-961d-fd5a19ff9c01> | 3.046875 | 428 | Personal Blog | Science & Tech. | 53.996579 |
Background page states:
The United States Historical Climatology Network (USHCN) is a high-quality data set of daily and monthly records of basic meteorological variables from 1218 observing stations across the 48 contiguous United States. Daily data include observations of maximum and minimum temperature, precipitatio... | <urn:uuid:3c6223e0-7116-4b77-86d1-d104727f0a57> | 2.859375 | 418 | Knowledge Article | Science & Tech. | 24.970221 |
Crystal structure of lonsdaleite
|Crystal symmetry||Hexagonal dihexagonal dipyramidal
H-M symbol: (6/m 2/m 2/m)
Space group: P 63/mmc
|Unit cell||a = 2.51 Å, c = 4.12 Å; Z=4|
Gray in crystals, pale yellowish to brown inbroken fragments
|Crystal habit||Cubes in fine-grained aggregates|
|Mohs scale hardness||7-8|
|Optica... | <urn:uuid:bd800d85-a5f3-4875-89b6-5132268265a9> | 3.578125 | 1,944 | Knowledge Article | Science & Tech. | 68.65209 |
Posted by Steve on October 31, 2002 at 22:54:03:
1. State the amplitude (A) the period (T) and the frequency (f) for the periodic function 120sin(100 "pi symbol" t)V
2. Through how many degrees does a wheel rotate in 10ms if its angular velocity is 8 rad/s
3. Sketch one cycle of the given function showing the values of... | <urn:uuid:513f3805-a920-4b0e-a452-4dcd130cb888> | 3.15625 | 142 | Q&A Forum | Science & Tech. | 86.990176 |
Britain, as you may have noticed if you’re reading from there, has experienced some extreme weather in recent weeks. Floods have followed drought, with new records for rainfall in May and June. We’re not the only place facing bizarre weather. The US is halfway through another summer of extremes, with over 3,000 new rec... | <urn:uuid:af0f03ec-62f4-481c-88cb-3467a3952697> | 3.515625 | 624 | Knowledge Article | Science & Tech. | 47.478024 |
Starting with the number 180, take away 9 again and again, joining up the dots as you go. Watch out - don't join all the dots!
Mr McGregor has a magic potting shed. Overnight, the number of
plants in it doubles. He'd like to put the same number of plants in
each of three gardens, planting one garden each day. Can he do... | <urn:uuid:d8ee2a17-d5e3-4b8c-84c6-4a8e3d003958> | 4.0625 | 1,401 | Content Listing | Science & Tech. | 73.358256 |
Major Section: BOOKS
Example: ACL2 !>:cbd "/usr/home/smith/"The connected book directory is a nonempty string that specifies a directory as an absolute pathname. (See pathname for a discussion of file naming conventions.) When
include-bookis given a relative book name it elaborates it into a full book name, essentially... | <urn:uuid:e9024ecd-3878-495c-89dc-1ca1668d2abb> | 2.734375 | 1,109 | Documentation | Software Dev. | 42.116934 |
Ternary Search Tries
June 5, 2009
Several of our exercises (Mark V. Shaney, Word Frequencies, Dodgson’s Doublets, Anagrams) have used hash tables based on string keys. When the keys are strings, a useful alternative to hash tables is a data structure called a ternary search trie, which can be faster than a hash table b... | <urn:uuid:409b6da4-39f2-477d-9ddf-6d1369b343b2> | 3.78125 | 409 | Tutorial | Software Dev. | 48.216293 |
By Dr. Scott Noakes The University of Georgia Center for Applied Isotope Studies
Ocean acidification, a decrease in seawater pH (acidity scale) caused by the increase of anthropogenic (human-induced) carbon dioxide (CO2) into the atmosphere, has received considerable attention in recent years. As scientists gain an und... | <urn:uuid:73108229-6018-496f-8e41-108c9903a733> | 3.5 | 1,299 | Academic Writing | Science & Tech. | 29.953617 |
Jeffrey Marlow, a graduate student at the California Institute of Technology, writes from a workstation off the coast of Oregon, where he is studying life around deep-ocean vents.
Monday, Sept. 5
As the crew of the Atlantis swings the sample-laden gear elevator onto the starboard deck, crystal drops of seawater drip fr... | <urn:uuid:020d47fa-dc71-4ded-a1f6-ec176b98fb5b> | 2.9375 | 963 | Personal Blog | Science & Tech. | 39.230627 |
Scientific proof: climate change is happening now
As global warming tightens its grip, the effects are being felt from the highest mountain peaks to the depths of the oceans. In just the last few years there are numerous examples of how this is affecting people and nature all over the world.
- Global warming is melting... | <urn:uuid:2e2cfd72-fd99-4a30-9509-bd5b5bff5988> | 3.59375 | 503 | Knowledge Article | Science & Tech. | 54.133453 |
carbon group elementArticle Free Pass
Except for germanium and the artificially produced flerovium, all of these elements are familiar in daily life either as the pure element or in the form of compounds, although, except for silicon, none is particularly plentiful in the Earth’s crust. Carbon forms an almost infinite ... | <urn:uuid:bf0e5f91-9f97-4d59-9070-235b438cb436> | 4 | 2,093 | Knowledge Article | Science & Tech. | 58.724042 |
Simplify and write the trigonometric expression in terms of sine and cosine: sin x +(cot x)(cos x) = 1/f(x) f(x)= ?
If tan^2(t) - sin^2(t) = sin^a(t)\cos^b(t), then the positive power a = the positive power b =
If You do 100 j of work to elevate a bucket of water,what is its gravitational potential energy relative to i... | <urn:uuid:8706b98c-5bcd-4409-9014-bfc1fa9c3de4> | 2.890625 | 276 | Content Listing | Science & Tech. | 84.714449 |
Meteoroids are small particles from comets or asteroids, orbiting the sun.
Meteors are meteoroids that enter the Earth's atmosphere and vaporize, also known as shooting stars.
Meteorites are meteoroids that actually land on the Earth's surface. The pieces of the meteor that exploded in Russia are meteorites.
Generally ... | <urn:uuid:9211e4c4-8c52-4902-88d8-860de1f59b7a> | 3.96875 | 292 | Listicle | Science & Tech. | 54.645328 |
Activity 1: Southern Hemisphere, late summer or early fall
In this activity, students will be introduced to the factors that influence light pollution by observing the constellation Sagittarius.
Several websites have star maps that you can download. They include:
- Stellar magnitude
- Review the procedures for a nightt... | <urn:uuid:fd32932a-b16f-43ee-a28a-936b55a8725f> | 3.71875 | 514 | Tutorial | Science & Tech. | 52.009579 |
|Jun1-10, 06:43 AM||#1|
What does the electric field inside of a circuit look like? How do the field lines go within and outside of the wires? I heard that the electric field is tangential to the wire at every point but I don't see how or why this should be.
|Similar Threads for: Electric Field|
|Model semiconductor ->... | <urn:uuid:209a3411-f508-4c6f-aa8d-14c6536e5a09> | 3.171875 | 208 | Comment Section | Science & Tech. | 42.726589 |
Narrator: This is Science Today. A robotic telescope system called ROTSE, which was the first to capture a gamma ray burst in action, is surprisingly inexpensive compared to the standards of modern science. James Wren of the Los Alamos National Laboratory says everything on this system was pulled together with off the ... | <urn:uuid:39592542-bf06-4191-a865-2374efaab61d> | 3.671875 | 243 | Audio Transcript | Science & Tech. | 37.112188 |
|Picture 1: Himalayan Balsam - beauty or danger (Photo: M. Wolfangel)?|
|Picture 2: Raccoon - threat or enrichment (Photo: R. Groß)?|
Foreign animals and plants brought to Germany are often described as "intruders" by the media in these days. In Germany, 1322 "new" animal species have been detected so far, 262 of which... | <urn:uuid:fff48682-3271-49af-ae78-41bf7188bfcb> | 2.703125 | 2,338 | Knowledge Article | Science & Tech. | 32.500122 |
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2000 June 3
Explanation: Nine years ago the massive Compton Gamma Ray Observatory, the second of NASA's space-based great observatories, was deploye... | <urn:uuid:56669f9f-360b-4226-b709-e39a2343dce3> | 3.625 | 307 | Knowledge Article | Science & Tech. | 32.966923 |
Natural ecosystems, made up of abiotic factors (air, water, rocks, energy) and biotic factors (plants, animals, and microorganisms). The Earths biosphere, including the atmosphere (air), hydrosphere (water), and litosphere (land), constitutes a feedback of cybernatic system that reflects what Rene Dubos referred to as ... | <urn:uuid:3724b7f1-4842-4aa9-a3f7-beed36c15e29> | 3.234375 | 201 | Knowledge Article | Science & Tech. | 23.5708 |
The scheme/sandbox module provides utilities for creating “sandboxed” evaluators, which are configured in a particular way and can have restricted resources (memory and time), filesystem access, and network access.
input-program : any/c
The make-evaluator function creates an evaluator with a language and requires speci... | <urn:uuid:0f0065c2-26ae-44d6-b7e4-aab5d79da63b> | 2.765625 | 3,658 | Documentation | Software Dev. | 38.325347 |
Casting out nines
Casting out nines is a sanity check to ensure that hand computations of sums, differences, products, and quotients of integers are correct. By looking at the digital roots of the inputs and outputs, the casting-out-nines method can help one check arithmetic calculations. The method is so simple that m... | <urn:uuid:5a4feab6-82d2-47cc-b695-71b39fab9ae7> | 4 | 1,911 | Knowledge Article | Science & Tech. | 64.96383 |
"Broadens Understanding of Science"
From Optonics and Photonics Focus, February 18 2010:
Is Light slowing Down?
The speed of light is a universal constant — or is it? Some evidence seems to suggest it might actually be slowing down. Will we soon have to revise our cosmological beliefs?
If light were slowing down, we wo... | <urn:uuid:a04c1ee8-fa68-4d73-8d87-b3980cbd72b9> | 2.84375 | 456 | Personal Blog | Science & Tech. | 38.174171 |
In the figure above, a circle with center O is inscribed in the square WXYZ. The segment XZ has a length of 3√2. What is the radius of the circle?
(B) Triangle XYZ is an isosceles right triangle. The length of each leg is 3. Since the diameter of the circle is equal to the height of the square, the diameter is equal to... | <urn:uuid:ade97d6c-59bb-4e62-8b70-9288077902c0> | 3.953125 | 218 | Q&A Forum | Science & Tech. | 91.002929 |
Common Lisp the Language, 2nd Edition
A name can be given to a function in one of two ways. A global name can be given to a function by using the defun construct. A local name can be given to a function by using the flet or labels special form. When a function is named, a lambda-expression is effectively associated wit... | <urn:uuid:e5147dc5-3d3b-4037-b576-27aaebaa726d> | 3.671875 | 144 | Knowledge Article | Software Dev. | 42.929415 |
Flux footprint (also known as atmospheric flux footprint) is an upwind zone where the atmospheric flux measured by a scientific instrument is generated. Specifically, the term flux footprint describes an upwind zone observed by the instruments measuring vertical turbulent fluxes, such that heat, water, gas and momentum... | <urn:uuid:ffcb8d4c-94b3-4919-b001-26b3fc7d8fca> | 3.53125 | 1,045 | Knowledge Article | Science & Tech. | 41.288869 |
In celebration of NOVA’s new episode, Hunting the Elements, we thought putting together a list of elemental resources would be appropriate. Here you will find interactives, video shorts, quizzes, and a full list of science programs that deal with the elements, their properties, and a host of fascinating characteristics... | <urn:uuid:27232348-18b2-47bb-9973-6e4e90882446> | 3.21875 | 788 | Content Listing | Science & Tech. | 38.615374 |
Deprecated since version The: mutex module has been removed in Python 3.0.
The mutex module defines a class that allows mutual-exclusion via acquiring and releasing locks. It does not require (or imply) threading or multi-tasking, though it could be useful for those purposes.
The mutex module defines the following clas... | <urn:uuid:81efcc49-e0c9-4ac7-9c02-136109457c70> | 3.09375 | 332 | Documentation | Software Dev. | 53.484118 |
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
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Topic review (newest first)
So the angle netween a sloping side and the base is
I was trying to calculate the angle between two sloping sides.
My formula is
It took a page ... | <urn:uuid:e00e3e94-7ec7-4d01-af6e-35a6bf2d47ce> | 3.15625 | 377 | Comment Section | Science & Tech. | 87.010099 |
Photo courtesy of Jim Denny
Publish by: Anne Wiley - May 24, 2013
Most people have never heard of the Hawaiian petrel, an endangered, crow-sized seabird that spends the majority of its life searching for food over the North Pacific Ocean. Nevertheless, this bird is no stranger to human influence, and it has a stern les... | <urn:uuid:0283ce2f-1d5a-4b1c-acf7-30c764522486> | 2.953125 | 1,513 | Content Listing | Science & Tech. | 55.190737 |
A standard candle
is an astronomical object that has a known luminosity
Standard candles are the basis for several important methods of deriving distances in extragalactic astronomy
in the cosmic distance ladder
Comparing its known luminosity (or its derived logarithmic quantity, the absolute magnitude
) and its observ... | <urn:uuid:b3f475f9-7901-446b-8744-6eb9cc31f205> | 3.875 | 752 | Knowledge Article | Science & Tech. | 25.140431 |
In This Tutorial we want to describe you a code that helps you in understanding Get Last Line of File in Java . For this we have a class name "Get Last Line of File". Inside the main method we create an instance of file class by using a new operator and passing a text .txt as a argument.
1)Input Stream Reader - This is... | <urn:uuid:063d0bb6-e824-4c73-8816-feb2f283456a> | 4.125 | 281 | Tutorial | Software Dev. | 71.359375 |
Observations and results
What is happening when you squeeze the Oobleck? What is happening when you release the pressure? Does the Oobleck remind you of anything else?
The Oobleck mixture isn't your typical liquid—or solid. The cornstarch-and-water mixture creates a fluid that acts more like quicksand than water: apply... | <urn:uuid:acd71f08-7ab2-42e2-a133-b1e45802a27b> | 3.609375 | 373 | Tutorial | Science & Tech. | 49.08849 |
During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm repeatedly. Daily levels of CO2 can vary due to weather, and there are seasonal trends as well. The level of atmospheric greenhouse gases continues to increase, now over 120 ppm since the Industrial Revolution began. For mo... | <urn:uuid:1b7e0828-4327-4d43-94a0-cc7d50d7c538> | 3.109375 | 355 | Content Listing | Science & Tech. | 53.306964 |
Q&A: Supernova Remnants and Neutron Stars
I saw the photo of the remnants of Cassiopeia A which exploded some 300 years ago (from our frame of reference). How can the gases still be at 50 million degrees? Wouldn't the density of the gas have decreased to a point that the temperature dropped significantly?
It's the low ... | <urn:uuid:ffe03f5a-a832-4658-9649-43d41709efab> | 3.015625 | 111 | Q&A Forum | Science & Tech. | 57.264182 |
common name: tortoise beetle
scientific name: Chelymorpha cribraria (Fabricius) (Insecta: Coleoptera: Chrysomelidae)
Introduction - Distribution - Identification - Biology - Hosts - Acknowledgments - Selected References
In September of 1993, a single specimen of an exotic tortoise beetle was collected on a species of I... | <urn:uuid:3928619d-2d74-44b4-8045-0936fb019a1e> | 2.984375 | 1,499 | Knowledge Article | Science & Tech. | 36.194692 |
I've just started a C++ programming class and I need to write a program to total up one day's worth of bank activity with a small percentage, but I don't know where to even start. Here's the problem summary:
The Silly Savings and Loan Company just opened up with a cash balance of $1000, and a plan to get rich. Their pl... | <urn:uuid:60a005df-003b-497c-ad59-5ad8ce2d198e> | 2.984375 | 453 | Comment Section | Software Dev. | 69.001219 |
Dormice have been lost from at least 8 counties in the past 50 years but PTES is leading the fight back for this secretive but charming animal.
The lead Partners on the UK Biodiversity Action Plan for dormice are the Wildlife Trusts and Natural England.
Dormice have an unusual biology that affects their lifestyle. Info... | <urn:uuid:c9de2912-4af4-4187-a9c0-93957c23be25> | 2.984375 | 299 | Knowledge Article | Science & Tech. | 45.4973 |
To prove this claim, let a, b, and c be the lengths of HG, EG and EH, respectively.
Given triangle GEH is a right triangle, then by using the pythagorian theorem gives us or It can be noted that length FG = BG = HG = a since all are radii of the circle as shown above.Therefore length EF = FG - EG = a - b and length BE ... | <urn:uuid:3e57f6da-54b2-4da3-9d7c-31d60b2bb8a9> | 3.0625 | 197 | Tutorial | Science & Tech. | 65.7272 |
[Tutor] requests/responses from urllib2
alan.gauld at btinternet.com
Mon Aug 11 10:49:28 CEST 2008
"Eric Abrahamsen" <eric at ericabrahamsen.net> wrote
> that traffic go in and out of my server machine? The python docs say
> that urllib2 requires the socket library to work, so I assume it's a
> socket of some sort, but... | <urn:uuid:a3528df9-2aa7-47d2-845a-fac9045d105c> | 2.8125 | 362 | Comment Section | Software Dev. | 60.294198 |
Experiments in physics designed to determine parameters in the functional relationship between quantities x and y involve a series of measurements of x and the corresponding y. In many cases not only are there measurement errors yi for each yj, but also measurement errors xj for each xj. Most physicists treat the probl... | <urn:uuid:c6e3da1a-a4ba-4968-99a4-6d4340924285> | 3.703125 | 332 | Academic Writing | Science & Tech. | 62.02137 |
Counting Human Genes
Name: Robert W.
Date: April 2004
Counting the number of protein-encoding genes in the
human genome is a difficult process, as the "start" and "stop" boundaries
of transcribed genes are only imperfectly understood. Some researches
have taken a different approach, capturing mRNAs from the cytoplasm a... | <urn:uuid:1199e667-42ef-4ec8-94d3-7487a6e2687f> | 3.1875 | 301 | Knowledge Article | Science & Tech. | 46.112617 |
Frogs and Summer Hibernation
Some of my 4th grade students want to know if frogs ever
hibernate in the summer? I suspect the students have observed frogs
burying themselves in summer in order to cool-off or keep moist.
Frog activity is based upon the temperature of their surroundings. Frogs
are heterothermic; this mean... | <urn:uuid:37d0e32e-a6c2-4882-ba98-485fb85d6392> | 3.140625 | 201 | Personal Blog | Science & Tech. | 50.507938 |
In one of the few lucky breaks of sun that we have experienced lately, I made my way up to Mount Adams for a survey of oregon spotted frog egg clusters. Spotted frogs have declined in recent years due to a variety of reasons – some obvious (non-native frogs like bull frogs, wetland development) and some mysterious. The... | <urn:uuid:8f2fcdb5-70e2-41da-b698-810fa32cd9ba> | 2.796875 | 238 | Personal Blog | Science & Tech. | 51.203899 |
Climate Update Pacific Issue 02, January, 2013
In this Climate Update, highlights include:
· Between 9 and 11 named Tropical Cyclones were forecast for the 2012 / 2013 South Pacific tropical cyclone season. 3 named Tropical Cyclones have occurred in the South Pacific so far.
· 11 Tropical Depressions have formed in the... | <urn:uuid:ad6f571c-8ba7-4cc8-8759-ede275985f08> | 3.03125 | 214 | Knowledge Article | Science & Tech. | 30.089835 |
Aperture photometry is the measurement of light which falls inside a particular aperture; usually, we mean a circular aperture of some fixed size. The XVista tv command allows you to perform simple aperture photometry by pointing the cursor to a star and pressing the "a" key.
The first thing you need to do is to gather... | <urn:uuid:294871bc-2fb0-41d5-ab62-245e44278ef7> | 3.484375 | 1,786 | Tutorial | Science & Tech. | 64.515412 |
The lovely, symmetric planetary nebula
cataloged as MWP1 lies some
4,500 light-years away in the northern constellation
Cygnus the Swan.
One of the largest
known, it spans about 15
Based on its expansion rate
the nebula has an age of 150 thousand years,
a cosmic blink of an eye
in the 10 billion year life of a sun-like... | <urn:uuid:d85eec5c-88d1-4d5d-8a45-a043cd746f03> | 3.265625 | 174 | Knowledge Article | Science & Tech. | 46.154246 |
A mass, m1 = 3.00 kg, resting on a frictionless horizontal table is connected to a cable that passes over a pulley and then is fastened to a hanging mass, m2 = 12.0 kg, as in Figure P4.25. Find the acceleration of each mass and the tension in the cable.
Find the change in volume (in cubic cm) of an aluminum sphere with... | <urn:uuid:3c589ccc-e79b-405b-8041-6c5dc94cb69c> | 3.6875 | 962 | Q&A Forum | Science & Tech. | 83.969604 |
|Index to this page|
Recombinant DNA is DNA that has been created artificially. DNA from two or more sources is incorporated into a single recombinant molecule.
5' GGATCC 3'
3' CCTAGG 5'
To be useful, the recombinant molecule must be replicated many times to provide material for analysis, sequencing, etc. Producing man... | <urn:uuid:3c1a2844-0811-4c7b-97b9-b9aeaae959eb> | 3.9375 | 1,010 | Knowledge Article | Science & Tech. | 46.392262 |
It contrasts with the dot product which produces a scalar result. In many engineering and physics problems, it is handy to be able to construct a perpendicular vector from two existing vectors, and the cross product provides a means for doing so. The cross product is also useful as a measure of perpendicularnessthe mag... | <urn:uuid:7745336e-f436-4885-9ca0-47383ffb5ffc> | 4.65625 | 259 | Truncated | Science & Tech. | 38.673716 |
Environment Australia, 1999
ISBN 0 642 2546 363
Taxon summary: Golden-tipped Bat
Scientific name: Kerivoula papuensis Dobson, 1878
Common name: Golden-tipped Bat
Conservation status: Lower Risk (near threatened)
Past range and abundance
Not known. There are few records of the species before the 1980’s (Hall and Richard... | <urn:uuid:8cb72e82-9854-4658-b820-7478f5339746> | 3.484375 | 1,783 | Knowledge Article | Science & Tech. | 54.216552 |
IF there is a kind of music of the spheres, as Kepler suggested centuries ago, it could be thought of as the accompaniment to the solar system's stately cotillion of planets gliding around the Sun, spinning and sometimes nodding, most with partners, each responding in subtle ways to all the others.
Orderly and predicta... | <urn:uuid:842fa28b-b623-4e7b-afa9-a384ca915924> | 3.40625 | 716 | Truncated | Science & Tech. | 38.831898 |
I recently attended a small technical conference on stray light in Toulouse, France. It was sponsored by CNES (the French space agency) and by several European aerospace companies. It was basically an optical engineering conference on a very specialized area of optics called “stray light.” As you can imagine, this mean... | <urn:uuid:8ec91e1e-d4f8-48f6-ad31-c23ee83ffffa> | 3.390625 | 833 | Personal Blog | Science & Tech. | 53.662905 |
A projectile is any object that has been thrown, shot, or launched, and ballistics is the study of projectile motion. Examples of projectiles range from a golf ball in flight, to a curve ball thrown by a baseball pitcher to a rocket fired into space. The flight paths of all projectiles are affected by two factors: grav... | <urn:uuid:ab35a6a6-9808-4501-b374-b22055335c26> | 4.1875 | 563 | Knowledge Article | Science & Tech. | 56.493696 |
After last week’s NASA public relations fizzle, when their lunar probe didn’t appear to produce any visible signs of a much touted plume rising into space, it seems they have been partially vindicated.
According to the agency’s news announcement on Friday, the trailing LCROSS probe did in fact snap photos of the result... | <urn:uuid:c3e0f0e3-e02e-484a-a8a1-2ad48dc56acc> | 3.0625 | 1,385 | Personal Blog | Science & Tech. | 47.365048 |
Amietia wittei (Angel, 1924)
- kingdom Animalia
- phylum Chordata
- class Amphibia
- order Anura
- family Pyxicephalidae Bonaparte, 1850
- Sub-Family Cacosterninae Noble, 1931
- genus Amietia Dubois, 1987
Original Published Description:
Amietia wittei is found chiefly in the Kenyan central highlands along the Mau Escar... | <urn:uuid:bd27b34f-61ec-4a2c-98a7-99bb667005ef> | 2.890625 | 1,344 | Knowledge Article | Science & Tech. | 27.470375 |
"Dwarf elliptical galaxies, such as NGC 185, pose a complex and little understood problem that might even be said to have a 'social' guise among astrophysicists," explains Aparicio, who heads the IAC's Stellar Populations group, which has carried out the study. This is because these galaxies were directly involved in t... | <urn:uuid:234d6875-ea33-4278-93db-b6cf6737c72c> | 3.265625 | 899 | Knowledge Article | Science & Tech. | 33.79511 |
Comet C/1999 S4: A comet discovered in September 1999 by the Lincoln Near Earth Asteroid Research (LINEAR) project.
Caption: On July 14, 2000 Chandra observed the comet LINEAR for a total of 2½ hours. The X-ray emission proved to be due to collisions of electrically neutral elements in the atmosphere of the comet with ... | <urn:uuid:ca198f11-b33d-4103-8d4a-2fc4893f0378> | 3.15625 | 164 | Truncated | Science & Tech. | 52.538081 |
While engaging with this module, you will...
In the lesson about function overloading, you learned how you may create multiple functions with the same name that have (presumably related but) different functionality. Now you will learn how to create a function that will work for different types of parameters but have ex... | <urn:uuid:0b712bf6-a748-437f-9081-754e2d277413> | 4 | 1,188 | Tutorial | Software Dev. | 55.654294 |
Arctic ice-melt is not just a local issue, it affects climate, weather globally
Melting sea ice may appear to be or local at worst regional problem, but NOAA says that changes in the Arctic ice cover also influence weather in the mid-latitudes, where the majority of humans live.
Satellite images show a clear accelerati... | <urn:uuid:aa367095-7fd6-4a63-8d9f-9662be58d267> | 3.828125 | 761 | Content Listing | Science & Tech. | 29.568929 |
Spent Rockets and Redundant Satellites in Space
These are links to the four main sections in the article:
When rockets and shuttles are launched into space they are accompanied by various rocket stages, fuel tanks and engines. These are needed to get out of the earth's atmosphere and to counter gravity.
The problem is ... | <urn:uuid:81409bff-834d-455a-997f-b1e4b5e9dcdd> | 3.03125 | 746 | Nonfiction Writing | Science & Tech. | 48.749564 |
Physics is the science of inanimate matter. Cosmology is that part of this science that deals with the universe as a whole. It is the oldest and the youngest branch of physics. It is the oldest because the heavens were studied in the ancient times, in Greece and in Asia. It is the youngest because it has been re-invigo... | <urn:uuid:687c79e8-64aa-4a8c-bfb8-b01010791d65> | 2.921875 | 1,016 | Content Listing | Science & Tech. | 38.677128 |
This animation illustrates a sample chemical reaction using the Quantum Trajectory Method introduced by Bohm. The scene depicts an activated complex of a model reaction. The reactant coordinate axis is oriented from left to right, and the product axis extends out towards the viewer. The vertical cylinders represent the... | <urn:uuid:41894124-8071-4550-8841-bafa8eb6c4aa> | 2.953125 | 243 | Truncated | Science & Tech. | 48.908365 |
Sunday 19 May
Belgrandiella (Belgrandiella hessei)
Belgrandiella fact file
- Find out more
- Print factsheet
Belgrandiella hessei is a tiny, poorly-known freshwater snail found only in a single underground stream in Bulgaria (1). Snails within the Hydrobiidae family rarely have any colouration in the shell, which is or... | <urn:uuid:63ed112c-d043-44c4-81c5-ab85e8e39426> | 3.25 | 1,285 | Knowledge Article | Science & Tech. | 30.201126 |
rosy apple aphid
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.
The rosy apple aphid (Dysaphis plantaginea) deforms fruit, producing “aphis apples.” Its feeding activity causes leaves to curl a... | <urn:uuid:754383d7-f76a-4820-a92a-f0a2635e5874> | 2.859375 | 153 | Knowledge Article | Science & Tech. | 52.409019 |
3x-1/x^2-10x+26 Find all (real) zeros of the function Find all (real) poles of the function The function has... A horizontal asymptote at 0? A non-zero horizontal asymptote? A slant asymptote? None of the above
mass is 64.0 and volume is 16.0 what is the density?
What type of sentence pattern is "Traditional gas-powere... | <urn:uuid:635f27fa-d2ed-43ca-91ae-14ec16cdb0a3> | 3.25 | 320 | Comment Section | Science & Tech. | 72.248 |
A LUNG-inspired hydrogen fuel cell can cut the amount of expensive catalyst needed and increase efficiency, its designers claim.
Despite decades of research, hydrogen fuel cells have failed to replace combustion engines in cars, thanks in large part to the cost of their platinum catalysts, says Signe Kjelstrup at the N... | <urn:uuid:efa744a6-5708-47d4-b2d6-8f0e2c49e462> | 3.859375 | 195 | Truncated | Science & Tech. | 40.825711 |
Even though the risk of an accident is low, most of us aren’t prepared to drive our cars without insurance. The consequences of an uninsured fender bender are too great. So we prudently spend a small amount of money to hedge our bets against an unlikely but real risk.
Former Apollo astronaut Russell L Schweickart, ch... | <urn:uuid:3706d7fa-3a2e-4329-b3e5-f22811d00e59> | 2.875 | 2,853 | Audio Transcript | Science & Tech. | 44.9063 |
HTML forms -- what would the web be without them? After you complete and submit a form, the input is usually sent to some script that processes it. The script may send the input via e-mail or insert it into a database.
Creating this type of functionality is usually a snap. First, you create an HTML form with whatever f... | <urn:uuid:9ba887bb-b408-44b3-b4c8-c6125346aad8> | 3.3125 | 550 | Tutorial | Software Dev. | 73.278694 |
|Jun26-10, 06:39 PM||#1|
resistor power rating
i have a question about resistors. i thought they were described by their resistance - 20 ohm, 40 ohm, 2 Megaohm, etc.
how come I see "power" values on resistors? for example my lightbulb says 40 watts. but i thought the power is simply P = V^2/R and that would depend the ... | <urn:uuid:9d766a4f-3c9f-48dd-814b-c424b18d1b50> | 3.03125 | 309 | Q&A Forum | Science & Tech. | 67.49753 |
The problems with decoherence and the many-worlds idea have led a sizable minority to support a view called GRW theory, according to Leggett. The concept was put forward in 1986 by GianCarlo Ghirardi and Tullio Weber of the University of Trieste and Alberto Rimini of the University of Pavia.
In the GRW scheme, the wave... | <urn:uuid:be93bb8f-fe5e-4b3e-938e-6f240ae1f6e8> | 2.953125 | 893 | Knowledge Article | Science & Tech. | 37.218361 |
Most Polychaeta have pairs of parapodia, paddle-like appendages, running down the sides of their worm-like bodies. The parapodia are unjointed fleshy appendages, with upper and lower lobes terminating in a set of stiff bristles. These bristles may be used for walking, swimming or digging, depending on the lifestyle of ... | <urn:uuid:808f0439-e92f-4a29-be24-1098c4707333> | 3.625 | 352 | Knowledge Article | Science & Tech. | 35.815 |
Artist's concept of a rocky planet in orbit around a distant star.
Click on image for full size
NASA, ESA and G. Bacon (STScI)
Planets around other Stars
Did you know that about 200 planets have been found around distant stars? The first planet around a star like our Sun was found in 1995. Since then, a new planet has ... | <urn:uuid:5a17391f-d649-4117-9c10-897a3df321a1> | 3.734375 | 597 | Content Listing | Science & Tech. | 73.438082 |
The folding of the Pacific plates that accompany the sinking of Indonesia during the 7 of 10 scenarios involves, as we have explained, the Mariana and Philippine plates tilting and flattening westward. This is nothing more than an existing trend, so is just a matter of the plates moving along faster in the direction th... | <urn:uuid:dcff1aa4-1bd6-4fd7-b1a8-0571e4645d22> | 3.6875 | 1,517 | Personal Blog | Science & Tech. | 43.281917 |
Turing machines are theoretical computers used to solve problems in mathematics, formal logic, and computer science. They form the basis of the modern concept of a computer, one with rewritable memory and programs. And as you’ll see below, they can be made from many things, especially very small things.
This is a Turin... | <urn:uuid:84dd7823-bd03-4609-bd96-c1ec5b9c1895> | 3.921875 | 230 | Personal Blog | Science & Tech. | 44.285773 |
Hot answers tagged safety
A neutralization reaction occurs between Brönsted acids and bases to form a salt. In this case, you have to add a Brönsted base to neutralize your acid. If the final pH is important, you should work out the exact quantity of base to add. Otherwise, just use litmus paper to check the pH of your... | <urn:uuid:69b9dce3-24e9-4b2c-a52e-10770f9c2b94> | 3.140625 | 105 | Q&A Forum | Science & Tech. | 61.140588 |
If you wanted to turn a rat into a fearless critter, unfazed by cats or bigger rats, the best way would be to neutralise a small pair of tiny structures in its brain called the dorsal premammillary nuclei, orPMD. According to new research by Simone Motta at the University of Sao Paolo, these small regions, nestled with... | <urn:uuid:9feb00f2-d616-4adb-9dc5-63de24152de2> | 3.4375 | 1,017 | Personal Blog | Science & Tech. | 46.657846 |
Readers have inquired recently about how tropical speleothems are calibrated to temperature. Judd Partin, Kim Cobb (both of Georgia Tech) and associates wrote an excellent article last year (Cobb et al, EPSL 2007) on detailed O18 observations near a Borneo speleothem about which they had published. They introduced the ... | <urn:uuid:77014b4d-3abe-41f6-91ea-3cc7875e35c9> | 2.984375 | 1,122 | Academic Writing | Science & Tech. | 42.980275 |
Leonardo of Pisa or Leonardo Pisano (Pisa, c. 1170 - Pisa, 1250), also known as Fibonacci, was an Italian mathematician. He is best known for the discovery of the Fibonacci numbers, and for his role in the introduction to Europe of the modern Arabic positional decimal system for writing and manipulating numbers (algori... | <urn:uuid:82e2c506-b6cb-47a5-b1b4-01f2425e09c3> | 3.265625 | 287 | Knowledge Article | Science & Tech. | 47.998164 |
William Caire, R. Mark Hardisty, and Kenneth E. Lacy
Biology Department, Central State University, Edmond, OK 73060
The capture heights and times of 251 red bats mist netted in southeastern Oklahoma were examined. Average capture heights varied from 3.4 m in May to 2.2 m in August. Most red bats were captured within th... | <urn:uuid:1a0a2f9a-d415-42bd-aa49-9d3b05334294> | 2.84375 | 2,177 | Academic Writing | Science & Tech. | 67.057078 |
Molecular Biology and Genetics
Statistics of barcoding coverage
|Specimen Records:||432||Public Records:||207|
|Specimens with Sequences:||454||Public Species:||15|
|Specimens with Barcodes:||312||Public BINs:||11|
|Species With Barcodes:||16|
The crocodile icefish or white-blooded fish (Channichthyidae) are a family o... | <urn:uuid:b858be7a-6f73-40c3-8035-940ac4c4943c> | 3.765625 | 1,874 | Knowledge Article | Science & Tech. | 60.987314 |
Sometimes lava touches the water. It can turn the water into acid.
When lava touches houses it can start a fire outside of the houses.
A volcano can make mud flows. Mud flows are thick sticky mud made by snow and ice melting.
When done erupting the weather can change, heavy rains, strong winds and mud flows occur.
Clou... | <urn:uuid:7af84aba-4cc0-417b-8553-bce69c60bc2f> | 3.578125 | 324 | Knowledge Article | Science & Tech. | 67.184933 |
Dec 03, Biology/Plants & Animals
"Pygmy mole crickets have solved the most difficult task of jumping from the surface of water," says Malcolm Burrows of the University of Cambridge. "For small insects, water can be a deadly, sticky trap: water grabs and holds an insect, offering it as an appetizing snack for an alert f... | <urn:uuid:769906f6-5915-4e41-ac1e-f160d7d1ac0d> | 3.609375 | 502 | Truncated | Science & Tech. | 56.427918 |
Search Loci: Convergence:
A human being is a part of the whole, called by us "Universe," a part limited in time and space. He experiences himself, his thoughts and feelings as something separated from the rest, a kind of optical delusion of his consciousness. This delusion is a kind of prison for us, restricting us to ... | <urn:uuid:857d860d-841b-4f8b-a6cc-98379ee08275> | 3.140625 | 493 | Knowledge Article | Science & Tech. | 32.729266 |
Giant Toxic Coal Ash Spill Threatens Animals
Kelly Hearn in Kingston, Tennessee
for National Geographic News
|January 23, 2009|
It's been called the Exxon Valdez of coal ash—a wakeup call for a fossil fuel industry.
But the recent toxic ash spill in Tennessee is greater in scope than the 1989 oil spill, and despite wha... | <urn:uuid:12cb7278-9fea-430d-bbb1-3d5184cffe8d> | 3.546875 | 1,601 | Truncated | Science & Tech. | 44.116278 |
Leonids Rain in Spain
Space Science News home
Leonids Rain in Spain
November 18, 1999: According to preliminary data reported
by the International Meteor Organization
and the Leonids Environment Operations
Center, there was an intense outburst of Leonid meteors over
Europe and the Middle East on Thursday morning, Novem... | <urn:uuid:d7b7bba6-cae5-4e9d-9acc-26c94670675f> | 3.21875 | 1,317 | Content Listing | Science & Tech. | 64.330227 |
The Nameless Hurricane
On March 28th, a surprising hurricane crashed into the coast of Brazil.
April 2, 2004: Hurricanes are terrifying. They rip trees right out of the ground, hurl cars into the air, and flatten houses. Their winds can blow faster than 100 mph. Some hurricanes have been known to pull a wall of water f... | <urn:uuid:6b07edbc-31b4-4737-b700-02ce8400eacb> | 3.609375 | 1,105 | Knowledge Article | Science & Tech. | 46.997901 |