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  • Limit on how many photons can hit a surface - Physics Stack Exchange
    However, there can be many practical limits to the number of photons per unit area These will depend on the frequency of the photons, as it may be easier to have lots of low-frequency RF photons compared to lots of gamma ray photons
  • Basics of photoelectric effect - Physics Stack Exchange
    The intensity of light, on the other hand, is proportional to the number of photons (emitted from the source or reaching to the surface of the material) For example, one x-ray photon (frequencies around $10^ {17}\ \text {Hz}$) is more energetic than ten UV photons (frequencies around $10^ {15}\ \text {Hz}$) but ten UV photons has a higher
  • particle physics - what happens to photo electric current when . . .
    Thus, if you increase frequency and keep intensity constant, the energy per photon increases, so the number of photons must decrease to keep the total energy transfer constant The number of electrons released is proportional to the number of photons hitting the surface, so that would decrease, and the current would as well
  • Number of incident photons - Physics Stack Exchange
    Suppose I am given the power of a light source, The wavelength of light and the surface area of the metal, Can I calculate the number of photons incident on the metal surface? Additionally, Suppose I said the light source is operating at 40% intensity, how would intensity affect the number of photons incident on the metal surface?
  • photons - In photoelectric effect experiment, why will the number of . . .
    Increasing frequency increases the energy of each photon, but increasing intensity increases the number of photon The photoelectric effect increases only when large electrons are knocked out from surface, which is only done by high intensity of light
  • Is the intensity of light ONLY dependent on the number of photons, and . . .
    It increases the number of photons per second, and it makes the hot objects emit more energetic photons The light energy per second from a hot object goes up faster than linearly with temperature
  • Why do photons: have to give all their energy or none at all, in . . .
    A photons loses energy by undergoing a collision with an electron, giving rise to the Compton Effect When it collides, its energy decreases with decrease in frequency and increase in wavelength
  • The temperature of photon and its energy - Physics Stack Exchange
    The photons are, roughly speaking, a count of the quantized energy of that mode The best place to understand the relation between field modes, their energy, and photons are Glauber's (1965) lectures, in my opinion Temperature: The term "temperature" denotes many different notions and quantities, somehow related to one another
  • photons - Sun light takes 1,000 30,000 100,000 170,000 1,000,000 years . . .
    The photons that emerge from the surface have their wavelength maximum around $500nm$, which corresponds to energies around $2 4eV$ As such, for each gamma ray produced inside the core, millions of photons are emitted from the sun's surface Where did all those extra photons emerge from?





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