Radio Waves / Visible Waves.

Thread Starter

cjdelphi

Joined Mar 26, 2009
272
I'm curious if you use oscillation to produce Radio Waves which are long waves to that of visible light...

What if your oscillation circuit produced short waves of the light frequency? would your capacitor/antenna start emitting light?
 

KL7AJ

Joined Nov 4, 2008
2,229
I'm curious if you use oscillation to produce Radio Waves which are long waves to that of visible light...

What if your oscillation circuit produced short waves of the light frequency? would your capacitor/antenna start emitting light?
If you could build a dipole at the length of visible light wavelength, your "antenna" would be about the size of an atom. This is essentially what you have when an atom emits a photon...the wavelength is about the size of an orbital shell!

eric
 

thatoneguy

Joined Feb 19, 2009
6,359
Looking into a K band or higher frequency transmitter horn will mess up your eyes.

Not exactly the same way light hurts, but high energy at a high enough frequency to cause problems. Like very high dB ultrasonic air pressure and ears.

If you could build a dipole at the length of visible light wavelength, your "antenna" would be about the size of an atom. This is essentially what you have when an atom emits a photon...the wavelength is about the size of an orbital shell!

eric
Isn't the color of the emitted light determined by the quantized "distance" the electron "falls" (shell transitions)?
 

Papabravo

Joined Feb 24, 2006
22,082
No. The wavelength of the light emitted when an electron falls to a lower energy level is given by
Rich (BB code):
E = 
 
where h is Planck's constant and λ is the wavelength.
 
This is known as Planck's Law
Since the energy is quantized, i.e. can only be from a set of discrete values, the wavelength is also quantized.
http://en.wikipedia.org/wiki/Planck's_law
 
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