army1987 comments on Shut up and do the impossible! - Less Wrong

28 Post author: Eliezer_Yudkowsky 08 October 2008 09:24PM

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Comment author: Decius 12 January 2013 03:37:16AM 0 points [-]

Building a useful radio transmitter that does not have sidebands is impossible.

Am I mistaken, or are you using a definition of 'radio transmitter' that excludes a variable-intensity 640 kHz laser?

Comment author: [deleted] 12 January 2013 04:46:04PM 1 point [-]

No. Anything which is not a constant-intensity sinusoidal wave in the time domain will have non-zero bandwidth in the frequency domain.