University Physics II · Introduction to Modern Physics · 15.05
Matter waves
De Broglie wavelength, electron diffraction, wave-particle evidence, momentum dependence, and the classical small-wavelength limit.
Course-map guide · not a complete lesson or simulationScope & orientation
What this subsection covers
De Broglie wavelength, electron diffraction, wave-particle evidence, momentum dependence, and the classical small-wavelength limit.A strong response uses spacetime-event diagrams and states where the model stops being reliable.
Reasoning checklist
Evidence, assumptions and limits
Assumptions to state
State the system, observable, approximation, and conditions held fixed before using a model.
Evidence to collect
Which measured trends distinguish the photon model from a classical intensity-only account?
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Which measured trends distinguish the photon model from a classical intensity-only account? Useful evidence includes stopping-potential data, frequency and intensity comparisons, a fitted Planck constant, residuals, and uncertainty.
Limits to state
This GioPhysics course map is an adaptable learning sequence, not academic credit, accreditation, or a universal university syllabus.
Read the complete note
This GioPhysics course map is an adaptable learning sequence, not academic credit, accreditation, or a universal university syllabus. Departments may redistribute weeks, laboratory hours, optics, or the modern-physics survey to match local requirements. This GioPhysics course map is an adaptable learning sequence, not academic credit, accreditation, or a universal university syllabus. Departments may redistribute weeks, laboratory hours, optics, or the modern-physics survey to match local requirements. Thermal physics appears as an unnumbered institutional extension: some universities assess it within Physics II, while others teach it in a separate course, so include the thermal extensions only where the local syllabus requires them. A result should be checked against units, signs, limiting cases, and the conditions under which its model was derived.
Diagram & examples
Work the claim before choosing an equation
Interactive concept map
Follow the model from claim to evidence.
De Broglie wavelength, electron diffraction, wave-particle evidence, momentum dependence, and the classical small-wavelength limit.
Model, evidence, and boundary
What is the strongest test of a claim about Matter waves?
Which measured trends distinguish the photon model from a classical intensity-only account? Useful evidence includes stopping-potential data, frequency and intensity comparisons, a fitted Planck constant, residuals, and uncertainty.
modelModel, evidence, and boundary turns the stated idea into a representation that can make a prediction.
Example questions
Try the reasoning before revealing the structure.
What is the strongest test of a claim about Matter waves?
Quick check
Test the reasoning, not recall
What is the strongest test of a claim about Matter waves?
Choose an answer to test the model.