Main Body


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More important than enabling the formation of images, is the ability of photons to initiate chemical reactions. Indeed, without this ability, their would be no visual response to images in our eyes.The frequency of electromagnetic radiation is constant whether in space, air, or water. Therefore electromagnetic radiation is defined in terms of frequency. However, in everyday use, we generally refer to its wavelength because:

*It is easier to visual length than frequency.

*Wavelength determines how photons interact with matter.

(Though this is based on the Bohr atomic model, frequency resonance works too.)


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Whether a photon will be absorbed by an atom or rejected depends on whether its wavelength will fit (resonate) the orbit of an outer electron.




Atomic absorption of photons has a variety of consequences that range from slightly heating the substance to catalyzing changes in molecular structure. Depending on wavelength and substance such changes include:

*photosynthesis – photons trigger this chain reaction which oxygenates the earth’s atmosphere while simultaneously producing the ultimate energy source for most life.

*odorant release

*germicidal sterilization – including potential for non-medical containment of airborne viruses.7

*chromosome mutation

*photoisomerization – You are currently experiencing consequences of this effect:

Photons within a narrow range of the electromagnetic spectrum can be absorbed by specific molecules in the receptor cells of the retina.

This triggers a chain reaction that disrupts neurotransmitter release by these cells.

That in turn results in a series of nerve impulses which convey the effect of the image at that location.

Because such photons are our primary source of information about the world, they are accorded a special name:


Glance at the Dance of Photons Copyright © 2022 by Thomy Nilsson. All Rights Reserved.

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