Scientists achieve optical control of phase and group velocities in everyday liquids
The phase and the group velocity of light propagating in conventional optical media cannot exceed the speed of light in ...
Railway Age18h
Crosson, McKechnie Earn ASLRRA Awards
The American Short Line and Regional Railroad Association (ASLRRA) has selected Herman Crosson, Chief Safety and Compliance Officer at Anacostia Rail Holdings (ARH), as Safety Professional of the Year ...