Photons

Mr. Anderson explains the photoelectric effect, a phenomenon where light, composed of photons, can eject electrons from metal surfaces. He discusses how Einstein's work in 1905 revealed that light behaves as both a wave and a particle, with energy quantized in discrete units. The video covers the electromagnetic spectrum, spectral lines, and electron transitions. It also includes a demonstration of the photoelectric effect using a PhET simulation, showing the relationship between frequency and energy, and how different metals respond to light. The video concludes with a formula for calculating photon energy.

What new insight or understanding did you gain from this video?