Q What is the precise ratio of frequency (in hertz) to bandwidth (in meters)? I have seen a six-digit figure floating around, but that may not be very exact. It’s likely that the ratio number could go on forever in precision, but can you give it to me in as many digits as possible?

A Is this sufficiently precise? 1 Hz = 299,792,458 meters You’ll find a terrific page on the Web for looking up constants at: http://physics.nist.gov/cuu/Constants/index.html.

From QST June 2000