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7 terms
Photonics Dictionary: E
Clear All Filters x
three D x
E x
edge enhancement
In image processing, any operation that strengthens information about the edges of objects displayed. Three types of spatial filtering are used: shift and difference, gradient and Laplacian.
Einstein coefficients
Three proportional coefficients labeled Am, Bmn, and Bnm, that respectively characterize the rate of spontaneous emission, induced emission, and absorption of radiation by an atom, ion or molecule.
electron micrograph
The photographic recording of images produced by the electrons from an electron microscope. The electron beam carries the images through an array of three lenses, and an enlarged electron image is...
enantiomer
Enantiomers are a pair of molecules that are non-superimposable mirror images of each other, similar to left and right hands. They are stereoisomers, meaning they have the same molecular formula and...
energy-sharing laser
A laser that distributes its output power among two, three or four optical fibers simultaneously.
episcope
->
opaque projector
An opaque projector is a device used for enlarging and projecting images from opaque objects such as printed pages, photographs, or three-dimensional objects onto a screen or surface. Unlike a...
Erfle eyepiece
A telescopic eyepiece comprising five or six simple lenses in the form of three doublets or two doublets and a singlet.
Photonics Dictionary
E
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