The Nature of Light

1

Electromagnetic Waves

Maxwell's Unification of Electricity, Magnetism, and Light

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2

The Electromagnetic Spectrum

From Radio Waves to Gamma Rays

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3

The Speed of Light

A Universal Constant, Historically Measured

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4

Evidence for the Wave Nature of Light

Diffraction, Interference, and Young's Double-Slit Experiment

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5

Blackbody Radiation and the Ultraviolet Catastrophe

A Crisis for Classical Physics

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6

Planck's Quantum Hypothesis

Energy Comes in Discrete Packets

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7

The Photoelectric Effect: Experimental Observations

A Second Crisis for Classical Physics

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8

Einstein's Photoelectric Equation

Light as Particle-Like Photons

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9

Wave-Particle Duality and de Broglie's Hypothesis

Matter Behaves as a Wave Too

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10

The Postulates of Special Relativity

Einstein's Radical New Foundations for Physics

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11

Time Dilation

Moving Clocks Run Slow

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12

Length Contraction

Moving Objects Appear Shortened

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13

Mass-Energy Equivalence

E = mc² and the Relativity of Mass

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14

The Nature of Light: Integrated Review

Connecting Waves, Quanta, and Relativity

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