Zurich Instruments AG - Explore Nanoscale 6/24 LB

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Bristol Instruments, Inc. - 872 Series High-Res 4/24 MR

367 terms

Photonics Dictionary

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magnetic bremsstrahlung -> synchrotron radiation

Radiation emitted by electrons when they travel in circular orbits at speeds close to that of light. Synchrotron radiation occurs in the x-ray and ultraviolet regions of the spectrum. Once considered...

magnetic bubble film

An amorphous film in which cylindrical bubbles of reverse magnetization can be formed to follow circuit paths usually made by depositing magnetic metal strips on the film surface. It is used in...

magnetic disc

A plastic disc coated with ferric oxide or other films on which data can be stored by selectively magnetizing areas of the surface.

magnetic enhancement

Plasma-enriched deposition or planar magnetic sputtering that offers increased deposition rates in optical thin-film production. This technology surpasses conventional and RF sputtering.

magnetic fluid

A fluid having three components: a carrier fluid, magnetite particles suspended by Brownian motion and a stabilizer to prevent agglomeration of these fine particles. A magnetic fluid is characterized...

magnetic force microscope

A variation of the atomic force microscope that operates by scanning a tiny ferromagnetic probe (or a magnetized tip) over a magnetic sample, and detecting the extremely small forces exerted on the...

magnetic lens

An arranged series of coils, magnets or electromagnets disposed in such a way that the resulting magnetic fields generate a Lorentz force that is used to then focus or deflect beams of rapidly moving...

magnetic permeability -> permeability

Typically represented by the Greek letter μ, magnetic permeability is the measure of a material's ability to generate and sustain a magnetic field within itself when an external magnetic field is...

magnetic resonance imaging

An imaging technique used in radiology that is based on the principles of nuclear magnetic resonance (NMR) to produce high-quality images of the inside of the human body by imaging the nuclei of...

magnetic resonance spectroscopy

A method of studying the chemical and physical properties of atoms and molecules (typically living tissue and chemical samples) by exploiting the magnetic properties of their atomic nuclei when an...

magnetic rotation spectroscopy

Technique in which the polarization rotation of light, and its relationship to the magnetic field strength can be analyzed and related to various experimental parameters when passed through a...

magnetic rotation spectrum

The absorption spectrum of an element influenced by a magnetic field in the same direction as the transmitted light, which is then exposed to the Faraday effect.

magnetic spectrograph

An electron system using the effect of a constant magnetic field on electron paths to differentiate electrons that have varying velocities for the accurate measurement of the energies and intensities...

magnetic tape recorder

An instrument used to record sound, pictures or both on a magnetic tape for storage and playback.

magnetic vector

A term denoting the magnitude and direction of the magnetic field associated with an electromagnetic wave when describing light in its vector form.

magnetically focused image tube

A vacuum tube in which a magnetic field is superimposed onto the tube's electrical field. When the two fields are aligned, electrons from the photocathode are accelerated through the tube in a spiral...

bubble memory -> magnetic bubble film

An amorphous film in which cylindrical bubbles of reverse magnetization can be formed to follow circuit paths usually made by depositing magnetic metal strips on the film surface. It is used in...

electromagnetic compatibility

The ability of a device to operate without electromagnetically interfering with the operation of nearby equipment and without suffering disturbances from the electromagnetic fields in its designated...

electromagnetic environment

The distribution of electromagnetic fields in a given area. The units are volts per meter, watts per meter squared and joules per meter cubed.

electromagnetic focusing -> electromagnetic lens

An electron lens consisting of a homogeneous axial electric field and a magnetic field used in high-quality image tubes for high modulation transfer function and small geometrical distortion...

electromagnetic image tube

An image intensifier tube that uses a magnetic field for focusing. It yields high-quality images, but its use is limited by its size and weight relative to other image tubes.

electromagnetic interaction

The interaction of charged particles and electromagnetic fields.

electromagnetic lens

An electron lens consisting of a homogeneous axial electric field and a magnetic field used in high-quality image tubes for high modulation transfer function and small geometrical distortion...

electromagnetic radiation

Radiation emitted from vibrating charged particles. A combination of oscillating electrical and magnetic fields that propagates through otherwise empty space with the velocity of light. This constant...

electromagnetic spectrum

The total range of wavelengths, extending from the shortest to the longest wavelength or conversely, that can be generated physically. This range of electromagnetic wavelengths extends practically...

electromagnetic theory

The theory of propagation of energy by combined electric and magnetic fields included in Maxwell's equations.

electromagnetic wave

Wave of radiation identified by individual fluctuations of electric and magnetic fields.

hybrid electromagnetic wave

A wave in the electromagnetic spectrum that has both electrical and magnetic field vectors in the direction of propagation.

nuclear magnetic resonance spectroscopy

That branch of spectroscopy that applies to the study of interactions between energy and atomic nuclei. The simultaneous application of a strong magnetic field and the radiation from a...

nuclear magnetic resonance

A phenomenon, exploited for medical imaging, in which the nuclei of material placed in a strong magnetic field will absorb radio waves supplied by a transmitter at particular frequencies. The energy...

permanent magnetic focusing

The focusing of an electron beam by a magnetic field that permanently retains the majority of its magnetic properties.

photoelectromagnetic effect

Interaction of a magnetic field with a photoconductive substance exposed to light to create a potential difference.

photomagnetic effect

The direct influence of light on the magnetic susceptibility of particular materials.

surface electromagnetic waves

Waves that propagate along the interface between two different media without radiation with exponentially decaying evanescent fields on both sides.

thermomagnetic imaging

The production of an image on a magnetic film that is exposed to infrared radiation and heated to a point above Curie temperature in regions of the image. The image is contacted with paramagnetic...

transverse electromagnetic mode -> transverse mode

In the context of optics and lasers, a transverse mode refers to a specific spatial pattern of the electric field within the cross-section of a laser beam. These modes represent the different...

amplitude (light)

The magnitude of the electric vector of a wave of light. See electric vector; magnetic vector.

absorption

The transfer of energy from an incident electromagnetic energy field with wavelength or frequency to an atomic or molecular medium.

absorption band

A group of frequencies or wavelengths on the electromagnetic spectrum which exhibits resonance or energy contributions near and in relation to a peak resonance wavelength.

absorption peak

An absorption peak refers to a sharp increase or spike in the absorption of electromagnetic radiation at a particular wavelength or energy level. It is a distinctive feature in the absorption...

accessible emission

The present radiation level within a laser or electromagnetic radiation operating area.

accessible radiation

Electromagnetic radiation present upon the open aperture of the source within an operating environment.

actinic focus

That point in the electromagnetic spectrum at which an optical system focuses the most chemically effective rays.

actinic radiation

Electromagnetic energy that is capable of producing photochemical activity.

angstrom

An angstrom, symbolized by the Ångström or Å, is a unit of length used to express atomic and molecular dimensions. It is equal to 0.1 nanometers or 1 × 10-10 meters. The...

anisotropy

Anisotropy refers to the property of exhibiting different values or characteristics when measured in different directions. In various fields, including physics, materials science, and geology,...

antiferromagnetism

The elimination of magnetic moments and decrease in magnetic susceptibility with a decrease in temperature due to the equal power of atomic magnets.

atomic absorption spectrometer

An atomic absorption spectrometer (AAS) is an analytical instrument used to determine the concentration of specific chemical elements in a sample by measuring the absorption of light at...

atomic clock

An atomic clock is a highly precise timekeeping device that uses the vibrations or oscillations of atoms as a reference for measuring time. The most common type of atomic clock uses the vibrations of...

attenuation

Attenuation refers to the gradual loss or reduction of intensity, force, or magnitude of a particular property as it propagates through a medium or travels over a distance. This concept is prevalent...

Photonics Dictionary