Ray Tomes wrote:
What happens to an e/m wave below that cuttoff frequency?
The energy must go somewhere.

And the moderator noted:
[[Mod. note -- If you have some source radiation below the cutoff
frequency, the light will be absorbed by the interstellar medium.
Think "light bulb outdoors on a foggy day". -- jt]]

Although the fog mainly scatters the light it cannot absorb it without
re-radiating at some other frequency. What I would like to know is the
equivalent thing for low frequency e/m waves between the galaxies? There
must be a resulting distribution of frequencies that the low frequencies
get converted to surely?

--
Ray Tomes
http://ray.tomes.biz/
http://www.cyclesresearchinstitute.org/