John Smith I wrote:
Cecil Moore wrote:
Richard Clark wrote:
If it didn't oscillate (resonate actually in a magnetically biased
electron fountain) at that frequency, it's probably Rubidium.

What happens to its frequency of oscillation compared
to a stationary observer as it approaches the speed of
light?

Pop that cesium atom with a hp pp laser and see if those vibs don't
stray a bit ...

Regards,
JS

a hp pp laser is not part of the mechanism used to measure cesium
vibrations so your comment is irrelevant.

Dave N