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6 terms
Photonics Dictionary: B
Clear All Filters x
mica x
B x
balloon-borne astronomical system
Any instrument or system carried by a balloon to the upper atmosphere to measure and record atmospheric information, such as radiation observations, while reducing atmospheric interference.
bacteriorhodopsin
A light-harvesting protein found in the purple membrane of a micro-organism called Halobacterium halobium. The protein undergoes a photocycle that involves several binary photochemical reactions that...
Baker corrector
A two-mirror corrector for a parabolic primary mirror that provides anastigmatic performance for large astronomical telescopes.
biaxial crystal
A birefringent crystal having two axes along which there is an absence of double refraction. Mica, sulphur and turquoise are biaxial crystals.
bleach (or bleacher)
A chemical used in the developing of positive photographs that incites oxidation and thereby dissolves the negative silver to vary tone, color and intensity.
Bunsen-Roscoe law
The law stating that the amount of chemical change produced is proportional to the amount of light absorbed. Actually, the change is also dependent on the intensity of light -- a fact named the...
Photonics Dictionary
B
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