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==Helium== | ==Helium== | ||
'''HE'''It is a colorless, odorless, tasteless, non-toxic, inert monatomic gas that heads the noble gas group in the periodic table. | '''HE''' It is a colorless, odorless, tasteless, non-toxic, inert monatomic gas that heads the noble gas group in the periodic table. | ||
[http://en.wikipedia.org/wiki/Helium/ Helium Wikapedia] | [http://en.wikipedia.org/wiki/Helium/ Helium Wikapedia] | ||
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The superconducter at CERN uses 96 metric tons of liquid helium to maintain the temperature at 1.9 kelvins | The superconducter at CERN uses 96 metric tons of liquid helium to maintain the temperature at 1.9 kelvins | ||
<videoflash type="youtube">j50ZssEojtM|340|275</videoflash> | <videoflash type="youtube">j50ZssEojtM|340|275</videoflash> | ||
====The Helium Neon Laser==== | |||
Once used as barcode scaners these lasers are best used in labratorys in optics demonstrations. Perhaps there is something we can film at Zeiss in Jena. | |||
[http://en.wikipedia.org/wiki/Helium%E2%80%93neon_laser/ The HeNe Laser] | |||