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Biophotons (from the Greek βίος meaning "life" and φῶς meaning "light") are photons of light in the ultraviolet and low visible light range that are produced by a biological system.
4 Ιουλ 2021 · Light as a Particle. The photon model of light explains that: Electromagnetic waves carry energy in discrete packets called photons; The energy of the photons are quantised according to the equation E = hf
4 Ιαν 2024 · Light is absorbed by pigments located in the thylakoid membrane; Two electrons in the chlorophyll molecule are excited to a higher energy level and are emitted from the chlorophyll molecule in a process known as photoionisation; Each excited electron is passed down a chain of electron carriers known as an electron transport chain
23 Σεπ 2022 · Knowing the basic principles of light is important for understanding how light interacts with biological matter, which is the basis of biophotonics. As Chap. 6 describes, light impinging on a biological tissue can pass through or be absorbed, reflected, or scattered in the material.
These examples are chosen to illustrate applications of photons per se, rather than general optical devices such as lenses, etc. that could operate under a classical theory of light. The laser is an important application and is discussed above under stimulated emission .
Interaction of Light and Matter. Atomic or molecular gases in low concentration show sharp energy eigen spectra. This was shown for the hydrogen atom.
The use of the word ‘photon’ to describe the quantum of electromagnetic radiation can lead to confusion and misunderstanding. It is often used in the context of interference experiments, for example Young’s slits, in such phrases as ‘which slit does the photon pass through?’ and ‘where do the photons hit the screen when one of the ...
