Calculate the energy and wavelength of the photon.

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SUMMARY

The discussion focuses on calculating the energy and wavelength of a photon emitted by an atom transitioning from an excited state of 1.8 eV to the ground state. The energy of the photon can be calculated using the formula E = hf, where h is Planck's constant. The conversation highlights the historical contributions of Max Planck and Albert Einstein to the understanding of photon energy and the photoelectric effect.

PREREQUISITES
  • Understanding of photon energy calculations using E = hf
  • Familiarity with Planck's constant (h)
  • Knowledge of the photoelectric effect and its significance
  • Basic concepts of atomic energy levels
NEXT STEPS
  • Research the calculation of photon wavelength using the formula λ = c/f
  • Explore the significance of Planck's constant in quantum mechanics
  • Study the historical context of the photoelectric effect and its implications
  • Learn about energy level transitions in atoms and their relation to photon emission
USEFUL FOR

Students studying quantum mechanics, physics enthusiasts, and educators looking to deepen their understanding of photon energy and atomic transitions.

shezill
An atom has an energy level 1.8 eV above ground state. When excited, it returns to the ground state and emits a photn. Ccalculate the energy and wavelength of the photon.

help me please
thank you
 
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Well if you ask like this, I think it's like in Homework Help: You would learn nothing from a direct answer.
So here's a hint: How, do you think, has it been found out that the energy level is actually 1.8 eV? :wink:
 
Planck said that the energy of a photon is directly related to the frequency of the photon. We can express that as E = hf where h means Planck's constant.
 
Last edited:
ShawnD, Einstein said that
 
No, Planck said it. That's why they call it "Planck's constant"
 
Nope, it was Einstein who came up with the whole "photon" thing in his paper on the photo-eletric effect, which got him the Nobel Price.

For many years, Planck simply didn't buy the idea
 
Originally posted by Dimitri Terryn
Nope, it was Einstein who came up with the whole "photon" thing in his paper on the photo-eletric effect, which got him the Nobel Price.

Ding, ding, ding! That's what Einstein won the Noble Prize for.
 

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