Jones,
and how about ultra-low momentum neutrons?
Steve
At 03:34 PM 12/9/2009, you wrote:
Ultra-cold neutrons can move relatively far. With a lifetime of 886
seconds, they could potentially move several miles before decay.
Apparently, even at near absolute zero - they still achieve about the same
velocity as a human running fairly fast.
Wiki sez: The kinetic energy of 300 neV corresponds to a maximum velocity
of 7.6 m/s or a minimum wavelength of 52 nm... and can be described as a
very thin ideal gas with a temperature of 3.5 mK.
http://en.wikipedia.org/wiki/Ultracold_neutrons
