all items 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Absorption weakens radiation by converting them at least partially. The remaining radiation is either reflected or transmitted.
Absorption usually depends on the wavelength, such in filters or the special BlueQ-glass in which UVB radiation is converted into heat and UVA radiation is transmitted.
The skin transforms radiation into biochemical processes, e.g. skin tannings


Ampere is the basic unit of the electric current.


A self-sustaining gas discharge between two electrodes.
In this case, light is emitted. Due to the high temperature, the volumic mass is reduced in the arc.
The arc takes an arc shap.
Technical lamps transfer the arc to the inside of a tube with a speciall selected atmosphere.
This allows a variation in intensity and spectral specifications.