BRAINCAKEEvidence for de Broglie's Hypothesis
Evidence for the de Broglie Hypothesis consists of a narrow beam of electrons directed at a thin metal foil.
The electrons are diffracted and form a pattern of rings on a fluorescent screen.
If the speed of electrons is increased the rings become smaller as the de Broglie wavelength decreases.
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Key terms in this lesson
- Momentum
- The product of an object's mass and its velocity; a vector quantity, conserved in any interaction provided no external resultant force acts.
More in The Photoelectric Effect
- De-excitation
- Fluorescence
- Fluorescent Tube
- Line Spectra
- Excitation of Hydrogen Atoms
- The Discovery of Helium
- The Dual Nature of Light
- De Broglie's Hypothesis
All 19 lessons in The Photoelectric Effect · All AQA AS-level Physics topics