https://www.khanacademy.org/science/modern-physics-essentials/x1bb01bdec712d446:why-light-and-matter-are-two-faced/x1bb01bdec712d446:the-marbles-that-make-up-light-photons/e/predictions-of-the-photon-picture 2021-07-23T11:40:18.048066238Z Predictions of the photon picture (PPP) Let's solve some problems to better understand the predictions of the photon picture w.r.t. intensity variation, frequency variation and time lag in photoelectric effect. Aakash exercise https://www.khanacademy.org/science/up-class-12-physics/x0958a876c1afdc76:dual-nature-of-matter-and-radiation/x0958a876c1afdc76:photoelectric-effect/e/wave-theory-predictions 2025-02-02T07:53:56.460765089Z Wave theory predictions Let's practice some problems to better understand the predictions of the wave theory regarding the phenomenon of photoelectric emission. Aakash exercise https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:modern-physics/x0e2f5a2c:atoms-and-light/e/einstein-photoelectric-equation 2025-02-02T07:53:56.460765089Z Einstein's photoelectric equation Let's practice some problems to better understand and apply Einstein's photoelectric equation. exercise https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:modern-physics/x0e2f5a2c:atoms-and-light/v/the_photoelectric_and_photovoltaic_effects 2024-06-10T02:56:50.336884637Z The photoelectric and photovoltaic effects When light at or above a threshold frequency shines on a metal surface, electrons are emitted from the surface. This phenomenon is called the photoelectric effect. The photoelectric effect is evidence that light is quantized—light exists as discrete packets of energy called photons. The greater the frequency of the light, the greater the energy of its photons. A closely related phenomenon is the photovoltaic effect, which is the underlying mechanism of solar cells. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/3c4f7d96-c073-42b4-a8c2-4ef3b6082de9_1280_720_base.png The photoelectric and photovoltaic effects When light at or above a threshold frequency shines on a metal surface, electrons are emitted from the surface. This phenomenon is called the photoelectric effect. The photoelectric effect is evidence that light is quantized—light exists as discrete packets of energy called photons. The greater the frequency of the light, the greater the energy of its photons. A closely related phenomenon is the photovoltaic effect, which is the underlying mechanism of solar cells. https://cdn.kastatic.org/ka-youtube-converted/HCCm0lFwqNw.mp4/HCCm0lFwqNw.mp4 861 Photoelectric effect: threshold frequency, wavelength, and energy relations