„The hidden one“,
the noble gas Krypton.
Only in traces present in air,
a small part of the element share.

A Scottish and a British man,
liquid air destillation, what a plan!
Krytpon was among the residues,
Neon was as well among the fews.

Altough a noble gas,
with fluoride it makes some fuzz,
Kryptonfluorine, a laser emitting source,
if excited with some electric force,

Krypton has a lot of emitting lines,
white light, bright shines.
Used for high speed photography,
as well as for magnet tomography.

In MRT it’s used to distinguish airways,
depending on where Krypton stays.
CERN is using it as liquid coolant,
gaining resolutions exorbitant.

In windows for the higher class,
it is inbetween as isolation gas.
Partially protecting from radioactivity,
what an endtime strategy!

You would miss Krypton in a laser show,
bright multicolour rainbow, go!
A rare noble gas with some application,
mostly in light and laser, for fun and celebration!