Photoelectric Effect

[Kosi 3E]

What is the theoretical underpinning and the experimental evidence that support the wave-particle duality of light, and how does this duality manifest in the context of the photoelectric effect, particularly in terms of the threshold frequency, work function, and the dependence of kinetic energy on the frequency and intensity of incident light?

[505989311]

Wave-particle duality states that light can act as both waves and particles. The photoelectric effect supports this idea, showing that light below a certain frequency doesn't release electrons, and the kinetic energy of emitted electrons depends on frequency and intensity. Higher frequencies yield more energy, while greater intensity produces more electrons.

[Bea Cruz]

Hi,
The photoelectric effect gave rise to the fact that light acts like a particle. Light sources with low frequency and even high intensity light will not meet the threshold of the metal which would be the work function. This would only cause the metal to vibrate. Whereas light sources with short wavelength and high frequency can eject electrons, meeting the threshold. Then the excess energy wouldn't disappear but go into kinetic energy.