Photonique

About the creation of light.

Incandescence

Incandescence

Stuff with a temperature above 0 Kelvin emits light. Quantity and frequency of the photons depend on the temperature. At temperatures higher than a few hundred Kelvin, the emitted light is in visual part of the spectrum. Read moreIncandescence.

Fluorescence

Fluorescence

Fluorescence is a process in which electrons become excited by absorbtion of light. This energy is given off in at least two steps and one involves emittance of a photon with lower energy / higher wave length. Read moreFluorescence.

Triboluminescence

Triboluminescence

Triboluminescence describes light emission caused by rubbing. In some cases, mechanical stress can directly excite electrons while rubbing and light emission are connected indirectly in other cases. However, details of the actual mechanism are rarely understood completely. Read moreTriboluminescence.

Fractoluminescence

Fractoluminescence

Fractoluminescence is light emission caused by breaking, scratching, tearing apart. As in other cases of mechanically triggered luminescences, the link between cause and emission is mostly indirect. Read moreFractoluminescence.

to be continued.


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