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  • Photoelectric effect - Khan Academy
    Introduction: What is the photoelectric effect? When light shines on a metal, electrons can be ejected from the surface of the metal in a phenomenon known as the photoelectric effect This process is also often referred to as photoemission, and the electrons that are ejected from the metal are called photoelectrons
  • The photoelectric effect (video) | Khan Academy
    Video transcript - [Instructor] The photoelectric effect is another one of these cool things in physics that sounds like it should be sci-fi, but actually describes an everyday phenomenon around us This and related effects are used for all sorts of things, like solar panels and cameras And the name itself is the biggest hint into what's going on
  • Photoelectric effect explanation using quantum theory
    Let's explore how the quantum theory of light explains the below experimental results of photoelectric effects 1 The kinetic energy of the photoelectrons are independent of intensity but depend on frequency 2 Below a minimum frequency called the threshold frequency, no photoelectric effect takes place, even if the light has very high intensity 3 Photoelectric effect is almost instantaneous
  • The photoelectric and photovoltaic effects - Khan Academy
    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
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  • Photo electric effect failure of wave theory - Khan Academy
    Let's explore what photoelectric effect is and how the wave theory of light fails to explain the experimental outcomes
  • Effet photoélectrique (leçon) | Le photon | Khan Academy
    Explication des expériences sur l'effet photoélectrique Comment ces expériences ont conduit à penser que la lumière adopte le comportement d'une particule d'énergie appelée photon





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