- #1
jumpjack
- 222
- 3
If photons "carry" visible light, and light is just a specific frequency of EM radiation... who carries radio waves?
[PLAIN]http://www.antonine-education.co.uk/physics_gcse/Unit_1/Topic_5/em_spectrum.jpg
And can an EM radiation at specific frequency be changed to a different frequency? I think a demodulator just extracts an existing sub-frequency from a carrier frequency, so although it "gets a low-frequency signal from an high frequency signal", it does not actually "convert" frequencies. Can a device change EM radiation frequency?
[PLAIN]http://www.antonine-education.co.uk/physics_gcse/Unit_1/Topic_5/em_spectrum.jpg
And can an EM radiation at specific frequency be changed to a different frequency? I think a demodulator just extracts an existing sub-frequency from a carrier frequency, so although it "gets a low-frequency signal from an high frequency signal", it does not actually "convert" frequencies. Can a device change EM radiation frequency?
Last edited by a moderator: