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66 terms
Photonics Dictionary: E
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electric x
E x
electrostatic charge
The effect produced by electrical charges or fields alone, without interaction with magnetic influence.
electrostatic focus
The use of an applied electrical field to focus a cathode-ray tube's electron beam.
electrostatic image dissector
A nonmagnetic instrument utilizing an electrofocus and deflection tube with a photocathode for imaging purposes. The optical image is converted into a photoelectric output at the photocathode and is...
electrostatic lens
The electrical distribution that serves to influence an electron beam in the same way that an optical lens affects a light beam.
electrostatic storage
Information storage on a dielectric medium that represents the data as those spots on the medium having electrostatic charges, forming an observable record of the data.
electrostriction
Elastic deformation of a dielectric caused by volume force when the dielectric is placed in an inhomogeneous electric field.
electrowetting display
An electrowetting display (EWD) is a type of electronic display technology that utilizes the principles of electrowetting to control the behavior of colored oil droplets on a hydrophobic surface....
elliptical polarization
->
polarization
Polarization refers to the orientation of oscillations in a transverse wave, such as light waves, radio waves, or other electromagnetic waves. In simpler terms, it describes the direction in which...
elliptically polarized light
A light beam whose electric vectors are broken into two elements of unlike amplitudes that are perpendicular to each other and that differ in phase by values other than 1, 3/4, 1/2, 1/4, etc.,...
embedded vision
Embedded vision refers to the integration of computer vision technologies into various embedded systems, devices, or machines. Computer vision involves teaching machines to interpret and understand...
epitaxial
Epitaxial refers to the growth of a crystalline layer on a crystalline substrate in such a way that the orientation of the crystal lattice of the growing layer is related to that of the substrate. In...
ESR
electrical substitution radiometer; electron spin resonance
evaporation coating
Coating carried out in a sealed chamber evacuated by a mechanical pump in series with an oil diffusion pump to a pressure less than 10-4 mm of mercury, measured by a vacuum gauge. At such a low...
excimer laser
An excimer laser is a type of ultraviolet laser that emits short pulses of light in the ultraviolet spectrum. The term excimer is derived from excited dimer, reflecting the nature of the gain medium...
exciter lamp
A small incandescent lamp whose intense beam is focused on the optical soundtrack of a motion picture film. The soundtrack modulates the beam, which in turn is detected by a photocell that produces...
explosion spectrum
The light spectrum formed by an explosive reaction or by the electrical explosion of a metallic wire by a strong current.
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Photonics Dictionary
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