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Topic: Helium-4

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Helium - Wikipedia, the free encyclopedia Helium was first detected on August 18, 1868 as a bright yellow line with a wavelength of 587.49 nm in the spectrum of the chromosphere of the Sun, by French astronomer Pierre Janssen during a total solar eclipse in Guntur City (India). Helium can also be synthesized by bombardment of lithium-6 or boron with high-velocity neutrons in a nuclear reactor to produce He-4 and tritium. Helium gas is used to fill the space between lenses in some telescopes because its extremely low index of refraction reduces the distorting effect of temperature variations in the gas filling the telescope (some telescopes use vacuum in the telescope instead). en.wikipedia.org /wiki/Helium   (5069 words)

Helium Helium II is actually a many-particle system in which some of the atoms are in the superfluid ground state, while the remainder are in excited states, whose energies are functions of their momenta. Helium and argon are used in welding to shield the hot metal from the atmosphere, especially in the case of reactive metals. By contrast, the critical temperature of helium is 5.2K, the critical pressure is 2.26 atm, and the critical density is 0.0693 g/cc. www.du.edu /~jcalvert/phys/helium.htm   (8914 words)

HELIUM Helium is one of the so-called noble gases. Helium was discovered in 1868 by J. Norman Lockyear in the spectrum of a solar eclipse. Helium is used in lighter than air balloons and while heavier than hydrogen, is far safer since helium does not burn. www.heliumuk.co.uk /helium.htm   (2139 words)

APOD: 2001 January 20 - Helios Helium Helium was first discovered in the Sun in 1868, its name fittingly derived from from the Greek word Helios, meaning Sun. Helium is now known to be the second most abundant element (after Hydrogen) in the Universe. Helium bearing mineral of Uranium provided an exact match to the previously detected element of the Sun. antwrp.gsfc.nasa.gov /apod/ap010120.html   (158 words)

It's Elemental - The Element Helium Helium, the second most abundant element in the universe, was discovered on the sun before it was found on the earth. Helium is combined with oxygen to create a nitrogen free atmosphere for deep sea divers so that they will not suffer from a condition known as nitrogen narcosis. The earth's atmospheric helium is replaced by the decay of radioactive elements in the earth's crust. education.jlab.org /itselemental/ele002.html   (420 words)

CE001: Not Enough Helium? Helium is a very light atom, and some of the helium in the upper atmosphere can reach escape velocity simply via its temperature. Thermal escape of helium alone is not enough to account for its scarcity in the atmosphere, but helium in the atmosphere also gets ionized and follows the earth's magnetic field lines. Helium escape from the terrestrial atmosphere- the ion outflow mechanism. www.talkorigins.org /indexcc/CE/CE001.html   (143 words)

Helium Present helium consumption is estimated to be about 100 million cubic metres, and is predicted to continue rising by 4 to 5 percent a year. Helium is tasteless, odorless, colorless, normally nontoxic, and the second most abundant element in existence. Helium is not very dense, so it's easier for the larynx to vibrate surrounded by helium than by air. www.chemmybear.com /helium.html   (1137 words)

SPACE.com -- Researchers and space enthusiasts see helium-3 as the perfect fuel source. "Helium 3 could be the cash crop forthe moon," said Kulcinski, a longtime advocate and leading pioneer in thefield, who envisions the moon becoming "the Hudson Bay Store of Earth."Today helium 3 would have a cash value of $4 billion a ton in terms ofits energy equivalent in oil, he estimates. While it's true that to produce roughly70 tons of helium 3, for example, a million tons of lunar soil would needto be heated to 1,470 degrees Fahrenheit (800 degrees Celsius) to liberatethe gas, proponents say lunar strip mining is not the goal. Helium 3, an isotope of the familiarhelium used to inflate balloons and blimps, has a nucleus with two protonsand one neutron. www.space.com /scienceastronomy/helium3_000630.html   (1125 words)

Matador Records Helium Biography Helium have been regrouping to add new bassist Ash from Polvo, and "Pat’s Trick" was recorded virtually entirely by Mary Timony alone (is this a trend?). The long-awaited second album from Boston’s HELIUM is an unexpected departure from the fragmented, angry pop of yore. 1994 - Helium mistakenly sign to Matador, confusing the label name and logo with that of Mammoth. www.matadorrecords.com /helium/biography.html   (1163 words)

How Airships Fly Helium gas is a natural fire extinguisher and, while once rare, is available world wide as a byproduct of natural gas production. In addition to the lift provided by helium, modern airships derive aerodynamic lift from the shape of the envelope as it moves through the air, as an airplane does. All but one airship model seen flying today are non-rigid, and use a gas called helium, instead of wings, for lift. www.americanblimp.com /fly.htm   (500 words)

Helium Safety Helium balloon-filling systems have become popular in recent years, and are frequently found in supermarkets, party supply stores, and variety stores. A little-known aspect of inhaling helium is how quickly you may lose consciousness due to asphyxia (oxygen deprivation). However, when the lungs are filled with helium, a different process takes over. www.cganet.com /N2O/helium_safety.htm   (823 words)

Helium Helium is the only substance that remains liquid at absolute zero of temperature, 0 K (zero Kelvin), or -273.15 Celsius. Helium is the second lightest element after hydrogen. It is known as a light gas that is used to float balloons. ltl.tkk.fi /research/theory/helium.html   (307 words)

Helium Energy Levels In the helium energy level diagram, one electron is presumed to be in the ground state of a helium atom, the 1s state. The electron energy levels for a helium atom demonstrate a number of features of multi-electron atoms. The energy required to remove one of them is the highest ionization energy of any atom in the periodic table: 24.6 electron volts. hyperphysics.phy-astr.gsu.edu /hbase/quantum/helium.html   (572 words)

Helium Helium has evolved significantly during nearly a decade of existence, but every step of the way, their distinctive brand of fractured fairytale pop has been impossible to confuse with any other band. Helium performed this live version of the song on WMBR in Cambridge, MA, as part of the legendary Pipeline! That five-song affair was a breathtaking preview of the genius that was Helium's second album, The Magic City (1997), which followed a few months later. www.epitonic.com /artists/helium.html   (379 words)

Helium dangers Helium gas can totally displace the available oxygen and if this is maintained for even a few seconds, asphyxia and death can and will occur". Evidence has proven that the inhalation of helium can be fatal, yet thousands of party goers continue to inhale helium thinking it to be incredibly funny rather than life threatening. This portrays helium inhalation as a fun, safe practice when, in effect, it is deadly. www.balloonartists.com.au /helium.htm   (411 words)

Virtual Helium Web Site Helium Operations (HO) is a government program that conserves helium gas for the future. Helium information on this web site is provided to inform the public on helium related issues. Amarillo, has been called the "Helium Capitol of the World" due to it's geologic and strategic location. www.geocities.com /CapeCanaveral/2216   (300 words)

Helium Helium will be similar to SourceForge, GForge, and similar systems, but simplicity and ease of use will take precedence over feature set, and it will support batch operations, so that instructors can manage dozens or hundreds of user accounts and projects in one go. The aim of the Helium project is to build a lightweight framework for undergraduate team programming projects. pyre.third-bit.com /helium   (69 words)

Helium Helium was discovered in 1868 by J. Norman Lockyear in the spectrum of a solar eclipse. Our students encounter helium carrier gas with the chromatograph instruments and observe its discharge spectrum. A light inert gas and the second most abundant element in the universe. chemlab.pc.maricopa.edu /periodic/He.html   (62 words)

Helium from Tiger Technologies Helium was included in the book "The Mac Shareware 500" as one of the top Macintosh shareware programs of all time. Helium also allows you to pick any font and size for help text, making it far more readable. Helium runs on any color Macintosh with System 7 or later, including Mac OS 8 and Mac OS 9; it's also accelerated for PowerPC computers. www.tigertech.com /helium.html   (254 words)

fUSION Anomaly. Helium Helium is also used in arc welding and gas-discharge lasers. helium (hê´lê-em) noun Symbol He A colorless, odorless inert gaseous element occurring in natural gas and with radioactive ores. Deep-sea divers often breathe a helium-and-oxygen mixture; because helium is less soluble in human blood than nitrogen, its use reduces the risk of the bends (DECOMPRESSION SICKNESS; DIVING, DEEP-SEA). fusionanomaly.net /helium.html   (2177 words)

Helium Exchange Helium Exchange is a team of digital media and technology veterans who have developed a unique way for the world to publish what we know. Helium Exchange is changing the way the world publishes what we know. If you would like more information about Helium Exchange, please contact us at www.helium.com   (80 words)

Helium Music Manager - ID3 Tag editor, MP3 renamer, Playlist organizer Helium Music Manager is a Windows application which lets you catalogue virtually any music collection; everything from mp3 files to audio CDs and from vinyl records to tapes. With Helium Music Manager you can locate, play and edit the tags of your favourite music. Helium Music Manager contains all the functions you need, integrated into one application. www.helium-music-manager.com   (140 words)

[ The Helium Homepage - Home] Helium is a functional programming language and a compiler designed especially for learning Haskell. Note: Helium does not support type classes yet. It is being developed at the Software Technology group of the Institute of Information and Computing Sciences of Utrecht University in the Netherlands. www.cs.uu.nl /helium   (143 words)

Helium : The Poetic Table of the Elements at everypoet.com Helium is blissful happiness in a red balloon. Helium : The Poetic Table of the Elements at everypoet.com It was discovered on the sun before on Earth www.everypoet.net /element/display.php?symbol=He   (281 words)

Strindberg + helium Support Strindberg and Helium by buying some stuff! www.strindbergandhelium.com   (8 words)

Helium - Wikipedia, the free encyclopedia Helium was first detected on August 18, 1868 as a bright yellow line with a wavelength of 587.49 nm in the spectrum of the chromosphere of the Sun, by French astronomer Pierre Janssen during a total solar eclipse in India. Helium can also be synthesized by bombardment of lithium-6 or boron with high-velocity neutrons in a nuclear reactor to produce He-4 and tritium. Helium gas is used to fill the space between lenses in some solar telescopes because its extremely low index of refraction reduces the distorting effect of temperature variations in the gas filling the telescope (some telescopes use vacuum in the telescope instead). en.wikipedia.org /wiki/Helium   (5022 words)

Helium - Wikipedia, the free encyclopedia Helium was first detected on August 18, 1868 as a bright yellow line with a wavelength of 587.49 nm in the spectrum of the chromosphere of the Sun, by French astronomer Pierre Janssen during a total solar eclipse in India. Helium can also be synthesized by bombardment of lithium-6 or boron with high-velocity neutrons in a nuclear reactor to produce He-4 and tritium. Helium is used in cryogenics, in deep-sea breathing systems, to cool superconducting magnets, in helium dating, for inflating balloons, for providing lift in airships and as a protective gas for many industrial uses (such as arc welding and growing silicon wafers). en.wikipedia.org /wiki/Helium   (4912 words)

Helium - Wikipedia, the free encyclopedia Helium was first detected on August 18, 1868 as a bright yellow line with a wavelength of 587.49 nm in the spectrum of the chromosphere of the Sun, by French astronomer Pierre Janssen during a total solar eclipse in India. Helium can also be synthesized by bombardment of lithium-6 or boron with high-velocity neutrons in a nuclear reactor to produce He-4 and tritium. Helium gas is used to fill the space between lenses in some solar telescopes because its extremely low index of refraction reduces the distorting effect of temperature variations in the gas filling the telescope (some telescopes are filled with vacuum instead). en.wikipedia.org /wiki/Helium   (4912 words)

Chem4Kids.com: Helium The big thing to remember is that Helium is lighter than air (it always rises). They use it in physics labs and they use it in balloons you see everyday. Go for site help or a list of chemistry topics at the site map! www.chem4kids.com /misc/helium.html   (87 words)

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