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Quantum Physics Complete Guide

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  • Quantum Physics Complete

Quantum Physics Complete Guide Photon Particle of light Intensity + Formula Power per unit area I = P/A Units: W/m² The Photoelectric Effect The emmision of electrons from a metal when electromagnetic radiation of high enough frequency falls on the surface. Threshold Frequency (f₀)...

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  • October 11, 2024
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Quantum Physics Complete Guide

Photon ✅Particle of light



Intensity + Formula ✅Power per unit area

I = P/A

Units: W/m²



The Photoelectric Effect ✅The emmision of electrons from a metal when electromagnetic radiation of
high enough frequency falls on the surface.



Threshold Frequency (f₀) ✅Minimum frequency of light needed to eject electrons fromt he surface of
the metal



Classical Theory ✅Light acts as a wave and the energy of a wave depends on its amplitude (intensity)
not its frequency.



Work Function ✅E = hf

ɸ = hf₀



Einstein's Photoelectric Effect Equation ✅Eᵀ = Eᵀ

hf = ɸ + Eᴹªˣ

hf = hf₀ + Eᴹªˣ



De Broglie Hypothesis ✅All particles can behave like waves whose wavelength is given by ƛ = h/p (h:
Planck's constant, p: momentum of particle)



Wave Matter ✅All moving particles have a "matter wave" associated with them whose wavelength is
the De Broglie wavelength.

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