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Introducing the FSA Module (2:39)
This module of the Reef Resilience Toolkit focuses mainly on the conservation of Reef Fish Spawning Aggregations (FSAs). Although the problems facing global fisheries are diverse, we have chosen to focus on fish spawning aggregations because of their extreme susceptibility to over-fish... | <urn:uuid:ee227392-398b-42a5-a930-2083da3b3f49> | 3.265625 | 305 | Knowledge Article | Science & Tech. | 20.209428 |
In this example we are going to sort integer values of an array using
Insertion sorting algorithm is similar to bubble sort. But insertion sort is more efficient than bubble sort because in insertion sort the elements comparisons are less as compare to bubble sort. In insertion sorting algorithm compare the value until... | <urn:uuid:6907f2e1-3d51-4742-85e3-451910a5e86b> | 3.890625 | 354 | Tutorial | Software Dev. | 57.557331 |
This tutorial demonstrates a way of running animation and game logic at a constant speed independent of effective frame rate. It's a pretty simple technique, so I'll try to keep it short and sweet.
Frame-based animation is a system in which the game world is updated one iteration each frame. This is the easiest system ... | <urn:uuid:8f055c20-768d-466c-9be7-9fa361185d5f> | 3.078125 | 1,502 | Tutorial | Software Dev. | 35.234462 |
Tutorials Shared by the Internet Community
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Tutorial Basic Detail
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Description:Debugging essentially means to track down an error in your code. Found a "bug" in your code? Then you need to "de-bug" ... | <urn:uuid:5d1e5c2a-2680-4f78-a4a1-abdc9741a8b3> | 2.703125 | 160 | Truncated | Software Dev. | 56.665115 |
Bode Titius Rule
In the 18th century, two astronomers, Johann Bode and Johann Titius, reported a numerical
sequence into which the sizes of the planetary orbits fit. At the time the rule was recognized,
there were only six known planets; Mercury, Venus, Earth, Mars, Jupiter and Saturn.
Textbooks usually remark on the B... | <urn:uuid:b8b5cd21-c7da-4dad-a85d-84c5ff3e4f10> | 4.375 | 440 | Tutorial | Science & Tech. | 76.136579 |
Shedding Light on Penguins - Studies by Milwaukee County Zoo staff in Chile provide insights into helping Humboldt penguins survive.
In conjunction with the Milwaukee County Zoo’s long-term field studies of Humboldt penguin ecology in Chile, the Zoo has been coordinating funding for annual population censuses of the wi... | <urn:uuid:a4912e87-b25f-4938-88ff-01d20cb0bb6a> | 3.234375 | 318 | Knowledge Article | Science & Tech. | 31.413826 |
NGC 2366 is a small, irregular dwarf galaxy 10 million light years away in the direction of the constellation Camelopardalis - the giraffe.
[important]You can click on the image to view a larger version[/important]
The clearly visible blue region in the upper-right corner of the image is the star-forming nebula NGC 236... | <urn:uuid:33c8be44-32a4-434d-89b1-86888e1857e6> | 3.71875 | 3,012 | Content Listing | Science & Tech. | 39.719688 |
Other assembly systems
There are a wide range of techniques that facilitate cloning, and they all have their strengths and weaknesses. Here we compare the different techniques to the Plug 'n' Play assembly standard. You can read more about the different techniques by clicking on the menu in the left side.
Standard BioB... | <urn:uuid:24e91bd5-3c60-443b-8ce3-499c69285b5c> | 3.21875 | 1,954 | Knowledge Article | Science & Tech. | 50.081307 |
Telescopes had been built to look at the stars, and astronomers weren’t going to ignore the closest example — our Sun.
Usually, telescopes are built to see objects that are too faint and far away to be easily visible. They’re constructed with giant mirrors or lenses so they can collect more light than the human eye can... | <urn:uuid:c07a99f3-d567-46ac-8fc0-ce0f5b1447b5> | 4.375 | 206 | Knowledge Article | Science & Tech. | 48.183147 |
Genuine science is always based on reality, never dogma. And there are two issues regarding reality:
- Nature gives consistent answers based on empirical analysis. So those answers will tend to be reliable.
- Human beings are fallible. That means they make mistakes and do not always make precise measurements.
A contrad... | <urn:uuid:61c95ae1-4cee-4014-acdb-32ebdea76084> | 2.96875 | 387 | Personal Blog | Science & Tech. | 41.783807 |
Adding DNS Record
Resource Records define data types in the Domain Name System (DNS). Resource Records identified by RFC 1035 are stored in binary format internally for use by DNS software. But resource records are sent across a network in text format while they perform zone transfers. The following record types are av... | <urn:uuid:4c55066a-401f-4aea-be99-a3ce07d25b72> | 3.15625 | 549 | Documentation | Software Dev. | 53.611937 |
||This article needs additional citations for verification. (May 2013)|
Miscibility pron.: // is the property of liquids to mix in all proportions, forming a homogeneous solution. In principle, the term applies also to other phases (solids and gases), but the main focus is usually on the solubility of one liquid in ano... | <urn:uuid:1d441e9c-4dcf-42a3-b490-ce3f333c30d7> | 3.59375 | 627 | Knowledge Article | Science & Tech. | 31.508279 |
Principles of Statistical Glass Modeling
On this page statistical analysis for the calculation of glass properties is explained (see also overview article at Wikipedia). The topic may be divided as follows:
1) Linear regression,
2) Non-linear regression,
3) Special applications.
1) Linear regression
Linear regression i... | <urn:uuid:38747492-6129-469e-9766-b2936359a765> | 3.234375 | 793 | Knowledge Article | Science & Tech. | 33.480281 |
There are thousands of endangered species across our planet which are feared to be on the road to extinction. These species could belong to the four-legged travellers of the earth, the winged birds or the marine life. Whatever their habitat, the endangered species are either at risk due to human activities in that area... | <urn:uuid:a52ba860-35e3-4950-8bd1-82543ae5cb73> | 3.171875 | 1,212 | Listicle | Science & Tech. | 55.89533 |
You don't need to know the exact definitions of the terms used in calculus if you want to see how they are applied to the real world, because in real life nothing is known exactly (unless it comes in discrete values, like the number of pages in a book, in which case calculus does not apply to it exactly anyway). That i... | <urn:uuid:3188c11b-620c-4135-8ff0-c9b32ecb9c1b> | 3.78125 | 2,050 | Tutorial | Science & Tech. | 90.544044 |
Mapping the Atom
Ernest Rutherford had led a trail to the heart of the atom. They now
knew about the positively charged nucleus containing protons. The focus
of Nuclear physics was shifted to the behavior and structure of electrons.
Throughout the 1920's, Danish physicist Niels Bohr would work with other
scientists to ... | <urn:uuid:5f4ca5c7-828e-4222-be46-96540c14a20f> | 4.3125 | 597 | Knowledge Article | Science & Tech. | 49.607739 |
were discovered by accident in 1967 while Jocelyn Bell
and Antony Hewish were looking for twinkling sources
of radio radiation. The explanation for the radio pulses
proved the existence of neutron stars, incredibly dense
remains of massive collapsed stars.
this section to read about the discovery, and find out
how a dy... | <urn:uuid:a2f455d3-3205-4021-b605-d0ce8b01da63> | 3.421875 | 77 | Knowledge Article | Science & Tech. | 36.160526 |
Hammerling's experiment with the single celled green algae, Acetabularia,
showed that the nucleus of a cell contains the genetic information that
directs cellular development.
A. mediterranea has a smooth, disc shaped cap, while A. crenulata
has a branched, flower-like cap. Each Acetabularia cell is composed
of three s... | <urn:uuid:0c0dcbea-78a7-4b9a-8b50-249ebdcb618b> | 3.765625 | 273 | Knowledge Article | Science & Tech. | 46.354037 |
Science Fair Project Encyclopedia
In particle physics, an elementary particle is a particle of which other, larger particles are composed. For example, atoms are made up of smaller particles known as electrons, protons, and neutrons. The proton and neutron, in turn, are composed of more elementary particles known as qu... | <urn:uuid:33e35d5a-6f54-49a2-b9ed-330bbfc50cad> | 3.921875 | 1,379 | Knowledge Article | Science & Tech. | 32.900733 |
The launch window would open at 7:08 a.m. EDT for 10 minutes and would provide for a rendezvous in five revolutions. Recovery of SL-3 was planned for 22 September 1973. Two members of the Skylab 3 crew, Jack R. Lousma, left, and Owen K. Garriott, center, inspect a part of the twin-pole solar sail at MSFC (above). At ri... | <urn:uuid:cfa9b16a-2c58-4cf9-89d9-0c2a959f215f> | 3 | 137 | Knowledge Article | Science & Tech. | 74.237549 |
From Wikipedia, the free encyclopedia
A cell wall is a fairly rigid layer surrounding a cell, located external to the cell membrane, that provides the cell with structural support, protection, and a filtering mechanism. The cell wall also prevents over-expansion when water enters the cell. They are found in plants, bac... | <urn:uuid:033041c6-d1c4-4d8b-b769-4d0b44d350ab> | 4.03125 | 2,097 | Knowledge Article | Science & Tech. | 37.27198 |
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.
use of radiation
...are most common. The latter avoid unwanted chemical interactions between the ions of the beam and the substrate. Sputtering re... | <urn:uuid:9e42d364-4a67-4818-a666-0f47dcad3bc7> | 3.171875 | 136 | Knowledge Article | Science & Tech. | 50.123982 |
A Measure of Success
A Finnigan Instrument Corporation Model 1015 GC/MS/DS. From left to right: a minicomputer from Digital Equipment; part of the quadrupole mass spectrometer; the remainder of the mass spectrometer electronics console and gas chromatograph. Image courtesy of Robert Finnigan.
In 1970 many Americans, di... | <urn:uuid:ebfef636-1852-4ff8-820e-355756d27d1b> | 3.15625 | 937 | Knowledge Article | Science & Tech. | 27.282117 |
Visual Studio 2010 and Visual Studio Team Foundation Server 2010 help software development teams successfully deliver complex software solutions. Learn how Visual Studio and Team Foundation Server enable you to enforce best practices for software development and to develop better quality software. This course uses the ... | <urn:uuid:4dfb8822-8df5-44df-b1b5-95c2e63c8852> | 2.6875 | 2,508 | Tutorial | Software Dev. | 39.473747 |
The Universe is a near
endless space filled with galaxies, stars, planets and
other objects like asteroids and meteorites.
galaxy can contain potentially billions of stars or suns.
The Earth's sun is part of the Milky Way galaxy.
The Earth's sun is at the center of our Solar System.
The Solar System includes all the pl... | <urn:uuid:925f1d18-b0cb-4984-a884-4ac8bf20a8d9> | 3.3125 | 145 | Knowledge Article | Science & Tech. | 54.207051 |
Programs do not have to be written in just one file, your code can split up into as many files as you want, if a program is comprised of forty functions you could put each function into a separate file. This is a bit extreme though. Often functions are grouped by topic and put into separate files. Say you were writing ... | <urn:uuid:2cbb65a8-65a4-4708-98ba-169863d1eca8> | 3.359375 | 179 | Tutorial | Software Dev. | 67.42188 |
House Fly Larvae
The house fly can be an aggravating pest found within human homes. In fact, the house fly has a strong relationship with man and will travel with human populations to even the coldest of regions. House fly populations can be harmful to human health: they carry multiple pathogens and have been linked to... | <urn:uuid:d04f31fb-520a-4b2b-8655-5ee367090ea5> | 3.59375 | 276 | Knowledge Article | Science & Tech. | 54.217585 |
|Nov26-12, 09:56 AM||#1|
pressure vessels problem
1. The problem statement, all variables and given/known data
20 m3 of gas at a pressure of 25 bar is to be stored in a cylindrical
pressure vessel 2 m long. Given the following information :
The yield strength of the vessel material is 14,000 psi
If a factor of safety o... | <urn:uuid:59ef43b9-a8b7-4e4e-94d7-d5ffa836784b> | 2.875 | 668 | Comment Section | Science & Tech. | 73.971422 |
im learning about radian and degree measurements and im not so good at word problems... is there anyone out there that can help me with the following?...
assume that the planet venus travels around the sun in a circular orbit. the radius of the orbit is 6.7 x 10^7 mi and the time needed to make one revolution is 243 ea... | <urn:uuid:b5640e31-f590-4328-b134-cbb5aafd9748> | 3.34375 | 116 | Comment Section | Science & Tech. | 80.264614 |
Extreme Weather In The 1970’s
In the 1970s, climatologists blamed the same sort of extreme weather events on global cooling that are now blamed on global warming. And not only the same events, but the same causes.
We are all familiar with the “ice age “scare of the early 1970’s. Science News ran a report at the time, w... | <urn:uuid:a731fe91-6285-475a-a135-f6a777a3ca33> | 3.484375 | 597 | Personal Blog | Science & Tech. | 35.923867 |
In 300 B.C., a student of Aristotle observed that humans could change regional temperatures by draining marshes and clearing forests. More than 2,000 years later, a Swede quantified carbon’s role in keeping the planet warm.
That Swede, Svante Arrhenius, concluded that burning coal could cause a “noticeable increase” in... | <urn:uuid:9efe7448-b196-413c-b665-c827dc701a09> | 4.0625 | 392 | Knowledge Article | Science & Tech. | 50.468983 |
Chinese Simplified: 雪 Chinese Traditional (Taiwan): 雪 Chinese Traditional (Hong Kong): 雪 Japanese: 雪 Korean: 雪
Check whether there is variation in the fonts used for the following characters.
Assertion: [Exploratory test] If no font-family is applied using styling, the user agent will select different fonts for display... | <urn:uuid:e8f5b550-9656-4aaa-b249-5dcb6a03c58e> | 2.78125 | 265 | Documentation | Software Dev. | 27.926029 |
Desargues Theorem in a Finite Geometry
Department of Mathematics and Computer Studies
York College (CUNY)
Jamaica, New York
Desargues "theorem" is one of the most unexpected and elegant results in projective geometry.
Given two triangles ABC and A'B'C', if AA', BB', and CC' are lines which go through a single point O, ... | <urn:uuid:c74daf87-0cc3-4429-989f-6b7bb8a5e624> | 3.09375 | 1,119 | Academic Writing | Science & Tech. | 66.652398 |
Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-38862
Copeland, S R; Sponheimer, M; Lee-Thorp, J A; de Ruiter, D J; le Roux, P J; Grimes, V; Codron, D; Berger, L R; Richards, M P (2010). Using strontium isotopes to study site accumulation processes. Journal of Taphonomy, 8(2-3):115-127.
|PDF - Register... | <urn:uuid:71673eae-2d88-4a13-aef2-c665d4848087> | 3.09375 | 669 | Truncated | Science & Tech. | 32.67392 |
Carbon dioxide concentrations in the atmosphere have crossed a major threshold: 400 parts per million. Here are five key points on how carbon dioxide is affecting Earth’s atmosphere and the role we're playing in it.
Broadcast meteorologists are a leading source of information about the atmosphere for the public, but ma... | <urn:uuid:da81544d-b727-4b5d-a3e4-721498cae771> | 3.109375 | 568 | Content Listing | Science & Tech. | 38.852634 |
The sum of the interior angles of a quadrilateral are equal to 360o. To find
the fourth angle of a quadrilateral when the other three angles are known, subtract the number
of degrees in the other three angles from 360o.
Example: How many degrees are in the fourth angle of a quadrilateral whose other three angles
are 80... | <urn:uuid:9fd848fd-2096-4de0-a38b-196c4557af85> | 3.09375 | 96 | Tutorial | Science & Tech. | 52.847264 |
If you tried to judge whether the 2008-2009 winter in the Northern Hemisphere was colder or milder than usual based on the conditions where you lived, it would be something like the ancient Indian story of the blind men and the elephant. If you couldn’t see the whole elephant, and you could only touch its leg, or its t... | <urn:uuid:974958bc-78e7-4153-a06a-88e1e49bb06d> | 3.90625 | 391 | Knowledge Article | Science & Tech. | 23.410559 |
Orography (from the Greek όρος, hill, γραφία, to write) is the study of the formation and relief of mountains, and can more broadly include hills, and any part of a region's elevated terrain. Orography (also known as oreography, orology or oreology) falls within the broader discipline of geomorphology.
Orography has a ... | <urn:uuid:73a58261-afa3-4d7c-8f9a-9e295217c849> | 3.859375 | 994 | Knowledge Article | Science & Tech. | 29.035405 |
- In calculus and related areas, a linear function is a polynomial function of degree zero or one.
- In linear algebra, a linear function is a linear map.
As a kind of polynomial function
In calculus, analytic geometry, and related areas, a linear function is defined by a polynomial of degree zero or one. When there is... | <urn:uuid:ea39cc43-5c1e-4ccf-ad71-6383920d8d0a> | 3.375 | 518 | Knowledge Article | Science & Tech. | 63.605305 |
There are three classes of meteorites: stony, iron, and stony-iron. A meteorite is heavier than an ordinary rock and will be attracted to a magnet. The condition of a meteorite can range from fresh to very weathered. Fresh meteorites have fusion crust, an aerodynamic shape and possibly thumbprints (regmaglypts). Weathe... | <urn:uuid:f1352a90-5365-40a2-bb4f-c36ba701520b> | 3.140625 | 1,027 | Knowledge Article | Science & Tech. | 43.989073 |
Reconstructing plant invasions using historical aerial imagery and pollen core analysis: Typha in the Laurentian Great Lakes
Article first published online: 15 JUN 2012
© 2012 Blackwell Publishing Ltd
Diversity and Distributions
Volume 19, Issue 1, pages 14–28, January 2013
How to Cite
Lishawa, S. C., Treering, David. ... | <urn:uuid:c04f08b3-1454-4248-a6bc-a57a8c3f6526> | 3.140625 | 600 | Academic Writing | Science & Tech. | 28.343106 |
Nocturnal light and lunar cycle effects on diel migration of micronekton
Limnol. Oceanogr., 54(5), 2009, 1789-1800 | DOI: 10.4319/lo.2009.54.5.1789
ABSTRACT: The roles of nocturnal light and lunar phase in the diel migration of micronekton from a nearshore scattering layer were examined. Migration patterns were measure... | <urn:uuid:65f7d964-0ed4-4db0-8b38-1a5f487af0e4> | 2.84375 | 351 | Academic Writing | Science & Tech. | 40.337626 |
Common Lisp the Language, 2nd Edition
Every object of type character has three attributes: code, bits, and font. The code attribute is intended to distinguish among the printed glyphs and formatting functions for characters; it is a numerical encoding of the character proper. The bits attribute allows extra flags to be... | <urn:uuid:564cb2df-32c9-4c77-aac5-bf3c8375a07b> | 3.46875 | 335 | Documentation | Software Dev. | 42.868659 |
A fission reactor consists basically of a mass of fissionable material usually encased in shielding and provided with devices to regulate the rate of fission and an exchange system to extract the heat energy produced. A reactor is so constructed that fission of atomic nuclei produces a self-sustaining nuclear chain rea... | <urn:uuid:13ecb980-b639-4b38-9746-baf4ac01278c> | 4.1875 | 3,474 | Knowledge Article | Science & Tech. | 40.16123 |
A galaxy is a massive, gravitationally bound system consisting of stars, stellar remnants, an interstellar medium of gas and dust, and, dark matter, an important but poorly understood component. The word galaxy is derived from the Greek galaxias (γαλαξίαÏ), literally "milky", a reference to the Milky Way. Exampl... | <urn:uuid:c273bad0-5a87-4a28-8a5f-1f1f730f00ed> | 3.59375 | 145 | Knowledge Article | Science & Tech. | 36.41915 |
Gray County, Kansas USA
Carbonaceous chondrite (CM2)
A single stone of unknown weight was found by a rancher on a farm 3.4 miles north of Cimarron and sent to the University of Kansas in the early 1950s. A piece was later acquired by a meteorite collector and samples given to NAU in 1998 and pieces to AMNH in 1992 and ... | <urn:uuid:80acb093-96f4-4033-a332-40732e077e70> | 2.734375 | 911 | Knowledge Article | Science & Tech. | 54.705157 |
||family: Uncertain (Hyloidea)|
Country distribution from AmphibiaWeb's database: Brazil
View distribution map using BerkeleyMapper.
IUCN (Red List) status: Data Deficient (DD).
For Red List information on this species, see the IUCN species account.
From the IUCN Red List Species Account:
This species is known only fro... | <urn:uuid:efb865d8-eb3c-4112-9aba-e65218bd19d1> | 2.765625 | 340 | Knowledge Article | Science & Tech. | 43.003692 |
The research findings are detailed in the Aug. 8 issue of Science magazine, in the article “Brown Carbon Spheres in East Asian Outflow and Their Optical Properties,” co-authored by Crozier, Anderson and Duncan Alexander, a former postdoctoral fellow at ASU in the area of electron microscopy, and the paper’s lead author... | <urn:uuid:08fa9412-6bf9-496d-834b-14a4d303d537> | 3.390625 | 382 | Personal Blog | Science & Tech. | 29.467381 |
http://SpaceWeather.com is the link for solar flare and aurora alerts, also has information on meteor showers for scatter.
Ham radio has a strong historical connection to radio astronomy and space science. Radio astronomy is the study of radio emissions from objects outside of the Earth's atmosphere, such as the Sun, s... | <urn:uuid:a9abf582-6e22-4e1f-943c-a2c948087674> | 3.328125 | 497 | Knowledge Article | Science & Tech. | 39.011015 |
How many solutions does this equation x1+x2+x3 = 11, given x1,x2,x3 >0 have?
This is solved using combination.
How can this be solved.
But it is not matching with the answer given.
By using that theorem, it would taken two from 10 available gaps, 10C2.
But i have the answer as 13c11.
I think they are considering it as ... | <urn:uuid:fd920c56-071c-4593-83f6-f4a90c9e1a20> | 3.109375 | 207 | Q&A Forum | Science & Tech. | 85.646146 |
What is Fog Lift?
context - when walking through a swamp the area is foggy,
later in the day when the sun is higher the fog has "lifted"
What really happened?
Fog doesn't really lift. As the sun warms the surface
the warmed ground warms the air, raising the air temperature
above the temperature at which water vapor con... | <urn:uuid:f8826430-a8f0-4904-bbe2-256bc334a8b3> | 3.5 | 141 | Knowledge Article | Science & Tech. | 54.877667 |
This section illustrates you how to use macros in C.
Macros are the identifiers that represent statements or expressions. To associate meaningful identifiers with constants, keywords, and statements or expressions, #define directive is used. You can see in the given example, we have define a macro i.e SQUARE(x) x*x. He... | <urn:uuid:b665a92e-084d-4e6c-9118-df7efd96b4b5> | 4.0625 | 143 | Tutorial | Software Dev. | 46.841071 |
Superstorm! Part 5
The weather can be hazardous to your health. The high winds, heavy rains, and lightning produced by big storms are all potential killers.
Space weather can be hazardous to your health, too. Big storms on the Sun shoot particles that could injure or kill an unprotected astronaut. These storms are know... | <urn:uuid:b016de1b-be0d-4d81-87ef-3d2d7220ca85> | 3.390625 | 338 | Truncated | Science & Tech. | 63.223261 |
NEMATOMORPHA DON'T HAVE
|Long, thin and
|A straight gut which is
|The cuticle and body
organisation of adults similar to that of Nematoda
|The adults free-living but
|Separate sexes and internal
|The larval stages are
parasitic on arthropods
|Freshwater, terrestrial and
Greek: nematos = thread, morphe = form
About 250 ... | <urn:uuid:34ee520a-4ed5-47af-b141-2157aae9761c> | 3.6875 | 401 | Knowledge Article | Science & Tech. | 35.686304 |
IMPORTANT NOTE: THESE NOTES ARE STILL UNDER DEVELOPMENT. PLEASE WAIT UNTIL AFTER THE LECTURE WITH HANDING ANYTHING IN, OR TREATING THE NOTES AS READY TO READ.
We've spent quite a bit of time talking about categories, and special entities in them - morphisms and objects, and special kinds of them, and properties we can ... | <urn:uuid:773ae548-5cb4-4cf1-8113-7956fc751e1a> | 3.453125 | 596 | Audio Transcript | Software Dev. | 47.635123 |
Date Added: February 16, 2010 09:19:15 AM
Category: Regional: Europe: United Kingdom: Computers & Internet
PHP is a scripting language designed for web development and can be embedded into HTML. PHP language runs on a web server, the code of PHP acts as the input and output is the creation of the web pages. The languag... | <urn:uuid:d08b2b08-e4d5-4063-b298-aea22774d3e7> | 3.40625 | 604 | Knowledge Article | Software Dev. | 50.088296 |
Branch of biology that deals with the reproduction, development and growth, anatomy, physiology, and behavior of animals.
Improving strategies to assess competitive effects of barred owls on northern spotted owls in the Pacific Northwest [ More info] A scientific study has determined that survey methods designed for sp... | <urn:uuid:e03ca3a8-1ac8-4a1e-ac0b-c27c5e926b3e> | 3.0625 | 561 | Content Listing | Science & Tech. | 27.168182 |
Galileo's observations of the phases of Venus do not prove that
the Copernican model is correct. But they do show that the Ptolemaic
model is wrong, for in that model Venus does not go through the full
range of phases.
As to whether a geocentric or heliocentric model is correct -
Tycho Brahe proposed a compromise model... | <urn:uuid:34fa68b7-c943-4742-bee1-463e4db0ebe8> | 2.734375 | 404 | Comment Section | Science & Tech. | 52.087722 |
Once you realize that you need to be concerned with "how confident am I in this measurement?" - precision, in other words, you have 2 problems:
Thankfully, (luckily, perhaps) when you reported your measurement you didn't say "exactly 25.45 centimeters"! If you had, you would have made yourself an example of what physic... | <urn:uuid:1d11ad96-de10-4513-801a-6d11aee08da2> | 3.09375 | 548 | Knowledge Article | Science & Tech. | 70.388226 |
Early Analog Computers (Super-Brains) (Jun, 1932)
Calculations in Higher Mathematics Performed by Complex Machinery
• FOR thousands of years after arithmetic and geometry had been worked out, these forms of mathematics were sufficient for most purposes of even learned men. However, when science became complex, and es... | <urn:uuid:aea04070-634a-4cbb-8d1a-e2c376205f51> | 3.625 | 1,140 | Personal Blog | Science & Tech. | 34.587349 |
We’ve all seen lectures go awry when plastic transparencies slide off projectors, but L. Mahadevan was probably the first to seriously analyze a plastic sheet’s fall from grace. It is even safer to assume he was the first to use it as a model for a flying carpet. Now, due to Mahadevan’s curiosity and an enterprising gr... | <urn:uuid:c91cf1cf-4708-4853-8df3-d4cadcada942> | 3.734375 | 490 | Nonfiction Writing | Science & Tech. | 54.006 |
Tree Rings Reveal Sunspot Record
a somewhat better article concerning sunspot activity with graphs.
be well, be love.
sunspots hit new highs
27 october 2004
the sun is more active at present than it has been for over 8000 years according
to a new method for determining the level of sunspot activity in the past. sami
so... | <urn:uuid:b7816816-f214-4191-93af-a63d1b2d47c5> | 3.015625 | 174 | Comment Section | Science & Tech. | 42.482355 |
This page shows you how to exit a loop in emacs lisp.
In many languages, there's “break” or “exit” keywords that you can use to exit a loop. In functional programing, usually you don't use loop/iteration, but sometimes a loop is just what you need.
In elisp, to exit loop, you can use a while loop and check a flag (set ... | <urn:uuid:99e6ab3e-7da5-457b-b10b-b1637f7604b0> | 2.9375 | 811 | Documentation | Software Dev. | 65.306492 |
An exoplanet has been discovered by Kepler using a strange quirk of relativity. Continue reading →
The odds are miserable and massively against the detection techno-aliens in the newly discovered Kepler-62 system. But like lottery players, we're going to try anyway. Continue reading →
The recent Kepler-62 discovery is ... | <urn:uuid:39cdb231-7826-4214-a59e-28cb9ab0f1e2> | 3.015625 | 305 | Content Listing | Science & Tech. | 43.102704 |
Mechanical engineer Meenakshi Reddy of Sri Venkateswara College of Engineering and Technology, in Chittoor, Andra Pradesh, and colleagues explain how certain materials, known as phase change materials (PCM) can store a large amount of heat in the form of latent heat in a small volume.
Heated in the sun, the mixture of ... | <urn:uuid:27a1afc2-ee57-4bcf-b522-6141b43699b5> | 3.203125 | 381 | Truncated | Science & Tech. | 37.416969 |
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
A circle is inscribed in an equilateral triangle. Smaller circles
touch it and the sides of the triangle, the process continuing
indefinitely. What is the sum of the areas of all the circles?
Rectangle PQRS... | <urn:uuid:f8abd489-ceef-429f-b196-7b8c717c554e> | 3.125 | 209 | Tutorial | Science & Tech. | 68.90875 |
Can you fill in the empty boxes in the grid with the right shape
Someone at the top of a hill sends a message in semaphore to a
friend in the valley. A person in the valley behind also sees the
same message. What is it?
What is the missing symbol? Can you decode this in a similar way?
The Vikings communicated in writin... | <urn:uuid:c8abc583-4a54-472a-ae3f-8186637801a2> | 3.265625 | 283 | Content Listing | Science & Tech. | 69.744156 |
Dec. 6, 2011: NASA’s Hubble Space Telescope presents a festive holiday greeting that’s out of this world. The bipolar star-forming region nearly 2,000 light-years from us, called Sharpless 2-106, looks like a soaring, celestial snow angel. The outstretched “wings” of the nebula record the contrasting imprint of heat an... | <urn:uuid:1f9d4d28-6b0a-4fe4-acff-121b7ae36daa> | 3.546875 | 872 | Personal Blog | Science & Tech. | 58.37219 |
"The Midwest and the upper Midwest were the epicenters for this vast warmth," Deke Arndt of NOAA's Climatic Data Center said in an online video. That meant farming started earlier in the year, and so did pests and weeds, bringing higher costs earlier in the growing season, Arndt said.
"This warmth is an example of what... | <urn:uuid:b064db3a-3dbf-41aa-8e3f-d35668aa7eb1> | 2.90625 | 286 | Audio Transcript | Science & Tech. | 60.458545 |
Examining Quantum-Degenerate Bose Gases
Albert Einstein and Satyendra Nath Bose predicted that when a gas of weakly interacting bosons - a Bose gas - was cooled to a low enough temperature, a new state of matter, a so-called Bose-Einstein condensate, would form. It took 70 years to demonstrate the transition to this st... | <urn:uuid:b123db5e-7985-4786-98c9-c504004b0e76> | 3.296875 | 517 | Knowledge Article | Science & Tech. | 45.703117 |
Add your answer here.
Check out some similar questions!
ask physics questions for free online? [ 6 Answers ]
A mouse is initially at rest on a horizontal turntable mounted on a frictionless vertical axle. If the mouse begins to walk clockwise around the perimeter of the table, what happens to the turntable? Explain usi... | <urn:uuid:0ba9719f-9f79-4c11-8e49-4e2a01504fd4> | 3.25 | 324 | Q&A Forum | Science & Tech. | 68.147648 |
"Numbers are fun." So insisted my seventh grade teacher, but my stubborn thirteen-year-old self refused to believe him. Numbers may be fun, but mathematics was hard. I struggled through maths classes when I was in school, painfully working my way through algebra, then geometry, trigonometry, and calculus. Though I even... | <urn:uuid:9a3232cf-2d56-45ec-bb1c-5fcb900a4f3a> | 3.046875 | 831 | Nonfiction Writing | Science & Tech. | 48.21519 |
The comparison test provides a way to use the convergence of a series we know to help us determine the convergence of a new series. Suppose we have two series and , where 0 ≤ an < bn. Then if B converges, so does A. Also, if A diverges, then so does B. So if we suspect that a series A converges, we can try to find a si... | <urn:uuid:9801a166-b7ee-4391-ab0c-18006fa8f059> | 4.03125 | 438 | Tutorial | Science & Tech. | 69.82 |
Ask A Scientist/Astronomer
The Universe is a big place - we know you have questions. We can find the answers.
Submit your questions about space, physics, environment, biology, engineering and more. Our Scientists and Astronomers will post the answers.
Email your questions to: AskaScientist@chabotspace.org
We will post ... | <urn:uuid:1d4aa966-2ef2-4993-95d7-6f41feffcbf0> | 3.0625 | 1,030 | Q&A Forum | Science & Tech. | 64.713265 |
Date: Around 1993
Does Centrifugal force really exist? If not, then why do so many
people use it to explain everyday occurrences? For example, when you swing a
bucket of water around, what keeps the water in? Most people would say
Yes, this idea does have a sound meaning and valid existence. It
does not represent a "re... | <urn:uuid:490e05ff-ff9b-4fe8-bb7c-b98264faea2b> | 3.40625 | 335 | Knowledge Article | Science & Tech. | 48.938199 |
| Section8 =
Trifluoroacetic acid (TFA) is the chemical compound with the formula CF3CO2H. It is a strong carboxylic acid due to the influence of the three very electronegative fluorine atoms. Relative to acetic acid, TFA is almost 100,000-fold more acidic. TFA is widely used in organic chemistry.
TFA is a reagent
used... | <urn:uuid:56332333-89ca-4358-ba14-6d8fbfc7c67d> | 3.5 | 328 | Knowledge Article | Science & Tech. | 25.636124 |
An artcile in the new Nature (probably behind the paywall) called “Quantum computation: The dreamweaver’s abacus” discusses first successful experiments that for the first time proved the existence of quasi-particles of quarter charge that have the properties needed to build qubits for quantum computing. Wait? Quasi-pa... | <urn:uuid:8bc4fcf1-4b8a-41d5-aa12-bb0c9f723430> | 2.984375 | 1,070 | Personal Blog | Science & Tech. | 50.01987 |
The number of heads obtained in 100 tosses of a coin (even if the coin
is moderately biased): Count the number of heads in each of many 100-toss
trials; make a histogram of the number of heads obtained in each trial.
Do it long enough, the histogram will be approximately the normal curve,
except (for a fair coin) shift... | <urn:uuid:384a8e6f-bd25-4db6-b2f9-afd3af9e4145> | 3.453125 | 552 | Tutorial | Science & Tech. | 58.270386 |
Metallic robots constructed by ingenious humans can survive on Mars. But what about future human astronauts? What fate awaits them on a bold and likely year's long expedition to the endlessly extreme and drastically harsh environment on the surface of the radiation drenched Red Planet? How much shielding would people n... | <urn:uuid:9b9278c2-0f84-4007-9504-ab58b8f6c5c9> | 3.765625 | 1,351 | Truncated | Science & Tech. | 42.217941 |
In a wedding banquet, guests are seated in circular table for four. In how many ways can the guests be seated?
We have learned that the number of permutations of objects on a straight line is . That is, if we seat the four guests Anna, Barbie, Christian, and Dorcas, on chairs in on a straight line they can be seated in... | <urn:uuid:920be5ad-72d7-42d8-a3df-99b35d8ff296> | 3.0625 | 431 | Personal Blog | Science & Tech. | 53.617806 |
Acid Rain Lesson Plan
Activity 2 – Understanding the difference between an acid and a base
Time: 1-2 hours
At the end of this lesson the student will be able to:
- Explain the difference between an acid and a base.
- Understand that an acid can be made more neutral by adding something which is basic or interacting with... | <urn:uuid:19234476-1aa8-4528-a756-72516eab6348> | 3.65625 | 597 | Tutorial | Science & Tech. | 68.340885 |
Quicktime7 (H.264), 160x120, 1.9 Mb
Quicktime7 (H.264), 720x480, 76.7 MB
iPod QuickTime7 (H.264), 480x270, 13.4 Mb
MP3 (Audio), 1.5 Mb
Windows Media (Audio), 1 Mb
Windows Media, 720x405, 23.3 Mb
Mendocino Ridge 4,600ft gas plume discovery off the California coast.
Okeanos Explorer, "America's Ship for Ocean Exploration... | <urn:uuid:ff8e3b76-6b1b-4ed6-8e95-5ea7574b32b9> | 2.6875 | 316 | Truncated | Science & Tech. | 68.471411 |
On 23 March 1950, the World Meteorological Organization (WMO) was formed for meteorology (weather and climate), operational hydrology and related geophysical sciences. It has 188 members.
World Meteorological Day is celebrated worldwide by the meteorological community every year on March 23 to commemorate the organizat... | <urn:uuid:4ccc631d-3aac-4721-b7af-524892120fff> | 3.453125 | 90 | Knowledge Article | Science & Tech. | 21.007857 |
A good definition for Ray of light is provided by Wiki. It is a theoretical term ideally used to mention the propagation of light in Ray optics (simply, it's an assumption of a path that light may take along its direction). You could draw infinite number of rays from a point source of light. We require rays (at least w... | <urn:uuid:6908a6b2-611f-49bc-adab-f36c41c28a22> | 3.703125 | 348 | Q&A Forum | Science & Tech. | 52.642353 |
Back in the 1960s and early 1970s, there was quite a lot of research published on the circadian rhythms in earthworms, mostly by Miriam Bennett. As far as I can tell, nobody’s followed up on that work since. I know, from a trusted source, that earthworms will not run in running-wheels, believe it or not! The wheels wer... | <urn:uuid:e276e1a9-b5e4-4395-be37-c21708a62998> | 2.875 | 912 | Personal Blog | Science & Tech. | 56.395606 |
Today, a woman doesn't quite get the Nobel Prize.
The University of Houston's College of Engineering
presents this series about the machines that make
our civilization run, and the people whose
ingenuity created Them.
In 1913, Swiss chemist
Alfred Werner won the Nobel Prize for explaining
something Louis Pasteur had po... | <urn:uuid:d9e11a8a-ce17-4fb3-b166-4a9f783e401c> | 3.5 | 832 | Audio Transcript | Science & Tech. | 52.417904 |
Find out about
all the facilities available to this site.
around this site.
Space Debris is also known as Space
Junk. Space Debris consists of millions of pieces of man-made
material orbiting the Earth.
- ISS adjusts orbit to avoid Space Debris
The International Space Station moved into a slightly higher orbit
on Frida... | <urn:uuid:0bb0f7f6-1403-447f-a5c6-53a5d54d2e40> | 4.28125 | 810 | Knowledge Article | Science & Tech. | 51.334568 |
Understanding how plants regulate element composition of tissues is critical for agriculture, the environment, and human health. Sustainably meeting the increasing food and biofuel demands of the planet will require growing crops with fewer inputs such as the primary macronutrients phosphorus (P) and potassium (K). P i... | <urn:uuid:6f54992d-0bcc-4b41-acef-f30bafa38a6e> | 2.75 | 342 | Knowledge Article | Science & Tech. | 26.161216 |
One of the most exciting developments in programming over the last few years is the emergence of Ruby-a free, highly portable, open-source scripting language that was created by Yukihiro Matsumoto in 1995. It is already extremely popular in Japan and is coming on strong in the U.S. Web development community.
Ruby is an... | <urn:uuid:66e5d6f1-eee9-44bf-8041-fd1c40d181c8> | 2.78125 | 185 | Content Listing | Software Dev. | 31.562845 |
What Happened to MVC?
What Happened to MVC?
Remember MVC? Model-View-Controller? It was this great idea that said
if you seperated these three aspects of an application that it would
be much easier to write and manage your code. It disappeared from
sight a few years ago. Why?
All these frameworks, Tapestry, JSP, Struts... | <urn:uuid:b5c2be54-8ba5-46e2-a9f6-05e8ab1f2811> | 2.75 | 1,523 | Personal Blog | Software Dev. | 61.731258 |
Astronomy for Kids
What is a black hole?
Black holes are one of the most mysterious and powerful forces in the universe. A black hole is where gravity has become so strong that nothing around it can escape, not even light. The mass of a black hole is so compact, or dense, that the force of gravity is too strong for eve... | <urn:uuid:b200ddcb-b1ac-4f8a-a711-94a3e206821e> | 3.921875 | 588 | Knowledge Article | Science & Tech. | 59.91201 |
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.
Twenty-First Symposium on NAVAL HYDRODYNAMICS
can absorb waves efficiently in some cases, but are not always effective i... | <urn:uuid:a0273e6a-f377-4741-904c-dc890bb061e8> | 2.765625 | 703 | Academic Writing | Science & Tech. | 41.385623 |
Name: G High
Why did the dinosaurs die out?
The current theory involves the impact of a huge asteroid from
space, which resulted in a large dust cloud going into the atmosphere when
this supposed asteroid struck the earth ages ago. The theory is that
because of the large, thick cloud of dust, the sunlight intensity
was... | <urn:uuid:68ab38e2-d768-4379-b544-674b74e2e78d> | 3.625 | 156 | Q&A Forum | Science & Tech. | 40.900671 |
(Lansing State Journal, December 4, 1992)
Question submitted by: J.D. Jackson of DeWitt
Let's consider a simple cooking process: boiling water. The energy of water molecules increases as they are heated. When water boils,the more energetic water molecules escape from the liquid as steam.
In normal atmospheric pressure,... | <urn:uuid:ab24b97d-3eaf-4684-b466-dd43880f8e24> | 3.875 | 319 | Q&A Forum | Science & Tech. | 46.200635 |
Mysterious Signal From Outer Space
Posted 31 January 2012 - 12:04 PM
A mysterious signal coming from a region of space between the constellations Pisces and Aries has been picked up on three different occasions by the Arecibo radio telescope in Puerto Rico.The signal is very puzzling and does not resemble any known ast... | <urn:uuid:fe59da83-03db-45ad-8584-f2774ca359b7> | 2.96875 | 859 | Comment Section | Science & Tech. | 51.006483 |
Leapin' Lizards; May 2009; Scientific American Magazine; by Stuart Fox; 2 Page(s)
For almost a century, scientists struggled to explain how the extinct reptiles called pterosaurs managed to get off the ground. In regard to the smaller pterosaurs, bird models sufficed; flapping from standstill or a running start could w... | <urn:uuid:60afad16-a8fe-4e47-9541-8833dee4005f> | 3.984375 | 189 | Truncated | Science & Tech. | 42.478 |
From the bunch of SOLID , I guess this is a fairly easy principle to understand. One of the basics of OOP is that we must code to interfaces and not to classes. Assuming that you have done that just make sure that your interfaces are not getting FAT. FAT is a common word used to explain this principle. By FAT we mean a... | <urn:uuid:67f2840b-23fa-4e1a-b557-65002209cb35> | 3.328125 | 1,671 | Content Listing | Software Dev. | 55.826942 |
If Water Vapor Were a “Greenhouse Gas” Droughts Would Cause Cold Snaps Not Heatwaves
Here we go again. Multiple news outlets have been asserting of late that manmade global warming is causing the current Australian drought and heatwave.
Here we go again. Multiple news outlets have been asserting of late that manmade gl... | <urn:uuid:395c49c8-e208-4457-9d99-71edf236e24e> | 2.859375 | 1,273 | Personal Blog | Science & Tech. | 36.767159 |
The Ocean Biome
The ocean holds the largest of all biomes on Earth. It covers 70% of the planet’s surface.
Life in the ocean is diverse. The smallest creatures that call the ocean home are microscopic and made of a single cell. The largest creatures are blue whales, which can be as much as 34 meters (110 feet) long. Th... | <urn:uuid:68fae255-8d8a-4ebc-ae04-b1f59496a2ac> | 4.0625 | 569 | Knowledge Article | Science & Tech. | 47.403557 |
Geometric Structures: Finite Arithmetics
York College (CUNY)
Jamaica, New York 11451
There are many points of view for discussing numbers. These include the use of numbers in counting and measuring. Another important point of view is the role numbers play in thinking about the solutions of equations.
If one is given th... | <urn:uuid:fe37c694-b3fc-4e52-8b8d-e0c214dbb7c7> | 3.625 | 2,964 | Academic Writing | Science & Tech. | 59.275128 |