Calculating the number of photons in a wave

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The discussion revolves around comparing the number of photons emitted by a 100W light bulb and a 100W FM radio. Calculations indicate that the FM radio emits significantly more photons per second than the light bulb, due to the lower energy of radio photons compared to visible light photons. The energy relationship is defined by the equation E=hc/λ, where the wavelength plays a crucial role in determining photon energy. The conclusion affirms that the frequency of radio waves is much lower than that of visible light, resulting in a higher photon count for the radio. This highlights the importance of understanding photon energy in different electromagnetic spectrum regions.
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Homework Statement



I am trying to answer a relatively simple question. I have been asked to compare the number of Photons in 100W light bulb and a 100W FM Radio per second. Having crunched the numbers it appears that an FM Radio wave gives out more Photons per second than a light bulb. Is this correct?

Homework Equations



I have used E=hc/λ


The Attempt at a Solution



I come out at 2.87x10E20 for a light (Using yellow) and 5.03x10E36 for a radio (the power depends on the wavelength)
 
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You are correct and presumably in your calculation you found that the energy of A radio photon is much less than the energy of a visible light photon.
A radio frequency is very much less than the frequency of visible light
 
Thank you, I was being a dumb arse.
 
No comment:smile:
except to say... don't look at yourself like that.
 
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