Learning objective
Know the experiments confirming the corpuscular properties of electromagnetic radiation.
Understand and apply the laws of the external photoelectric effect and Einstein's equation.
Learn to calculate the energy, momentum and mass of a photon.
Explain the Compton effect on the basis of energy and momentum conservation.
Expected outcomes
Calculates the short-wavelength limit of the X-ray spectrum from the accelerating voltage.
Finds the maximum kinetic energy of photoelectrons, the stopping voltage and the red limit of the photoelectric effect.
Calculates photon energy and momentum and the number of photons in a radiation flux.
Calculates the Compton shift and the recoil electron energy, and can explain the dual nature of light.
Activities
Lecture
Lecture · 1 h 20 min ·
required
Corpuscular properties of electromagnetic waves. The short-wavelength limit of the X-ray spectrum. The external photoelectric effect and its basic laws. Photons.
Practice · 1 h 20 min ·
required
Determination of the sensitivity of a photocell
Laboratory · 1 h 30 min ·
optional
Study of the laws of the photoelectric effect
Laboratory · 1 h 30 min ·
optional
Bothe's experiment. Photons. The Compton effect
Self-study · 6 h 10 min ·
optional
Final test
Test · 20 min ·
required
· pass ≥ 70%
Completion conditions
- Lecture
- Corpuscular properties of electromagnetic waves. The short-wavelength limit of the X-ray spectrum. The external photoelectric effect and its basic laws. Photons.
- Final test — at least 70%