Quote:
Originally Posted by Tormentil  2. If the speed of light is 186,282 miles per second, what's the speed of dark ? |
Well as in any material rather than a vacuum there will be the phenomenon of dispersion (the same phenomenon which gives rise to spectra in a prism). Then the dispersion is a function of wavelength and so the speed of light in a medium is a function of its frequency and thus energy. So by that measure as 'dark' is presumably lower energy than light then yes it will have a different speed.