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Zurich Instruments AG - Challenge Us 10/24 MR

Opto Diode Corp. - PbS &PbSe Detectors 10-24 HP

8,726 terms

Photonics Dictionary

electrostatography

The recording of patterns by the production and use of latent electrostatic charge patterns. See electrostatic process.

electrostriction

Elastic deformation of a dielectric caused by volume force when the dielectric is placed in an inhomogeneous electric field.

electrostrictive

A common form of high-precision, ceramic-based actuator capable of moving and measuring at the nanometer level.

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....

ELED

edge-emitting LED

elevation angle -> angle of elevation

The angle between an instrument's line of sight and a reference horizontal plane.

ELF

extremely low frequency

ELINT

electronic intelligence

ELIP

electrostatic latent image photography

ELISA

enzyme-linked immunosorbent assay

ellipsometer

A spectrometer equipped with polarizing prisms and retardation plates that is used in the analysis of elliptically polarized light, mostly in the study of thin, evaporated films.

ellipsometry

Ellipsometry is an optical technique used to characterize the properties of thin films and surfaces. It is based on the measurement of changes in the polarization state of light reflected or...

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.,...

ellipticity

The quality of asymmetrical intensity distribution in a laser beam, as opposed to a circular distribution.

electron microscope; electromagnetic; electromodulation

EMA

extramural absorption

EMAT

electromagnetic acoustic transducers

embedded laser

The term "embedded laser" typically refers to a laser device that is integrated or embedded into a larger system or structure. In this context, "embedded" implies that the laser is an integral part...

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...

embossed hologram

A hologram imprinted on plastic or another medium; e.g., those commonly found on credit cards.

EMC

electromagnetic compatibility

EMCCD

electron multiplying CCD

EMD

equilibrium mode distribution

EME

electromagnetic energy; electromagnetic environment

emergent ray

In optics, the light ray leaving a medium in contrast to the entering or incident ray.

emery

A natural abrasive, produced from corundum in grades ranging from rough to fine, used in the grinding and lapping of glass.

EMF

electromotive force

EMI

electromagnetic interference

emission line

The line or lines emitted by an element when its radiation particles travel from one energy level to another.

emission microscope

A type of electron microscope in which the specimen also serves as the cathode source.

emission of sky

Thermal emission caused by the unity in absorption bands that must be discriminated when calculating radiation intensity of any celestial object.

emission spectroscopy

Emission spectroscopy is a technique used to study the emission of electromagnetic radiation (light) by atoms, molecules, or ions when they undergo transitions from excited states to lower energy...

emission spectrum

An emission spectrum is a graphical representation or a characteristic pattern of the wavelengths or frequencies of light emitted by a source, such as an atom, molecule, or celestial object. It shows...

emissive power

The emissivity of a body times the emissive power of a blackbody at the same temperature. For a blackbody, it is the total radiation per unit area of radiating surface.

emissivity

The ratio of an object's radiance to that emitted by a blackbody radiator at the same temperature and at the same wavelength.

emissivity correction matrix

A computer-generated routine for achieving true-temperature readings in thermal infrared imaging systems.

emissometry

The use of a material's emissivity to measure absorption. It is useful as an absorption loss measurement technique, since at thermal equilibrium, emittance is equal to absorptance.

emittance

See emissivity; exitance.

emitter

A source of radiation.

EML

electro-absorptive modulated laser

EMMA

electron microscopy and microanalysis

emmetropia

The normal condition of vision where an object at infinity is in sharp focus with the eye lens in a neutral or relaxed state.

EMP

electromagnetic pulse

empty magnification

Magnification that is above the level of maximum useful magnification and does not contribute useful resolving power. In a visual telescope, empty magnification is any in excess of 20 D, where D =...

EMR

electromagnetic radiation

EMRLD

excimer moderate-power Raman shifted laser device

EMU

electromagnetic unit

emulsion

In photography, the layer of light-sensitive material (usually a suspension of silver halide crystals) that coats the film or plate.

emulsion speed

The sensitivity of a photographic emulsion when exposed to light, provided that the film is developed through a standard process.

Photonics Dictionary

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