This cache is the 10th in a series of 22 hides to be named after
chemical elements and placed on Ramsey streets (and sometimes
points North) with the same name. The series will speed up the
qualification requirements for challenge cache
GC2P5TJ, since some already published elements
require traveling great distances. The closest cache named
Krypton is located 110 miles West.
History: Krypton was discovered in 1898 by Sir
William Ramsay and his student Morris Travers in the residue left
after liquid air had nearly boiled away. Krypton was left in the
residue after boiling away water, oxygen, nitrogen, helium, and
argon from the sample of air. Krypton is present in the air at
about 1 ppm. Neon was discovered by a similar procedure by the same
workers just a few weeks later.
Sources: Krypton is present in the air to the
extent of about 1 ppm. The atmosphere of Mars contains a little
krypton (about 0.3 ppm).
Uses:
- used with argon as a low-pressure filling gas for fluorescent
lights
- used in some photographic flash lamps for high-speed
photography, lamps, UV-laser spectral line used for international
measurement of a metre