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24 kwi 2017 · In order to get back they produce a packet of energy, which is a photon. Depending on the amount of energy released, the photon will be of different frequencies and therefore colors. Sodium atoms, for example, give off yellow photons and therefore yellow lights.
A photon is produced whenever an electron in a higher-than-normal orbit falls back to its normal orbit. During the fall from high energy to normal energy, the electron emits a photon -- a packet of energy -- with very specific characteristics.
A photon (from Ancient Greek φῶς, φωτός (phôs, phōtós) 'light') is an elementary particle that is a quantum of the electromagnetic field, including electromagnetic radiation such as light and radio waves, and the force carrier for the electromagnetic force. Photons are massless particles that always move at the speed of light ...
21 gru 2023 · Everything you need to know about photons and their interaction process: Photoelectric effect, Compton and Rayleigh scattering & Pair production
If a photon enters matter with an energy in excess of 1.022 MeV, it may interact by a process called pair production. The photon, passing near the nucleus of an atom, is subjected to strong field effects from the nucleus and may disappear as a photon and reappear as a positive and negative electron pair.
21 wrz 2021 · A photon strikes photosystem II to initiate photosynthesis. Energy travels through the electron transport chain, which pumps hydrogen ions into the thylakoid space. This forms an electrochemical gradient.
Photons can be absorbed or emitted only by atoms and molecules that have precisely the correct quantized energy step to do so. For example, if a red photon of frequency \(f\) encounters a molecule that has an energy step, \(\Delta E\), equal to \(hf\), then the photon can be absorbed.
