Why Does the Classical Theory of Light Fail to Explain the Threshold Frequency?

AI Thread Summary
The classical theory of light fails to explain the threshold frequency because it does not account for the quantized nature of light, specifically the concept of photons, which have specific energy levels. According to the equation E = hf, if the energy of a photon is below the threshold frequency, it cannot emit electrons. This indicates that the classical wave theory, which does not incorporate photons, is insufficient for explaining phenomena like the photoelectric effect. Participants in the discussion express confusion about the role of photons in light theory and seek simpler resources for understanding classical light characteristics. The conversation highlights the limitations of classical theories in addressing quantum behaviors of light.
jasper10
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Homework Statement




Why does the classical theory of light waves not explain the existence of a threshold frequency?


The Attempt at a Solution



I'm not sure but I think that this is because each "photon" has a specific energy. If this energy is below the E = hf where f is the threshold frequency, it won't emit electrons.

Do all photons have the same energy supply?

Please, Help! thanks.
 
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Hi jasper10! :wink:
jasper10 said:
Why does the classical theory of light waves not explain the existence of a threshold frequency?
…
I'm not sure but I think that this is because each "photon" …

Where do photons come in the classical theory of light waves? :smile:
 
tiny-tim said:
Where do photons come in the classical theory of light waves?

What else would be the characteristics of the classical theory?

do you know any simple website? wikipedia is far too complicated and redundant.
 
jasper10 said:
What else would be the characteristics of the classical theory?

You tell us. :smile:

(but there are no photons in the classical theory of light waves)
 
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