Aplanatic points refer to specific points in an optical system where certain aberrations, such as spherical aberration or coma, are minimized or eliminated. In an optical system, aberrations are deviations from the ideal behavior, and correcting or...

The method by which photographic film is scanned by an electron beam. One technique uses the uniform light of a television...

Inertial confinement fusion (ICF) is a method of achieving nuclear fusion, a process where two atomic nuclei combine to...

The detection and measurement of nuclear and x-ray radiation.

An otoscope is a medical device used by healthcare professionals, particularly ear, nose, and throat (ENT) specialists,...

Whispering gallery mode (WGM) refers to a phenomenon in wave physics, particularly in optics, where waves, such as light or...

An imaging technique used in radiology that is based on the principles of nuclear magnetic resonance (NMR) to produce...

A near-infrared (NIR) camera is an imaging device designed to capture images in the near-infrared region of the...

Spectroscopy characterized by the Mossbauer effect - recoilless emission and absorption of nuclear gamma radiation- which...

Spectroscopy is a technique used in the study of interactions between matter and electromagnetic radiation. It involves...

A binocular microscope designed for the viewing of stereo pairs. As these stereoscopic image pairs are seen through a...

A smooth, highly polished surface, for reflecting light, that may be plane or curved if wanting to focus and or magnify the...

Optical confinement of matter with high field energies intended to induce a stable nuclear fusion interaction.

The length of the small space within which the atmosphere exhibits coherence, particularly in relation to an observer on...

A chart on paper or glass containing a series of sets of lines at progressively smaller spacing and used to ascertain the...

In a mechanical system, any lost motion between driving and driven elements due to clearance between parts.

A chemical detection technique used to measure molecules that have a magnetic dipole moment. The analysis is directed to...

Phototherapy is a medical treatment that involves the use of light to treat various conditions, particularly those related...

A microdisplay is a miniature electronic display technology that is designed to project visual information onto a small...

The forming of a clear silhouette of an object by placing a light source behind it. Used in machine vision when surface...

A device that detects and measures the quantity of exposure to nuclear radiation. It uses a special glass rod that...

Fusion ignition refers to the point in a controlled nuclear fusion reaction where the energy released by the fusion...

imaging system which clearly shows the IR signals in the field of view as well as ambient environment

A device used to detect and measure the quantity of exposure to nuclear or x-ray radiation, and dependent on the fact that...

The liquid used in microscopy to fill the space between the high-power objective lens and the microscope slide in order to...

An absorption peak refers to a sharp increase or spike in the absorption of electromagnetic radiation at a particular...

The small central portion of the human retina that is responsible for providing the clearest, and most distinct aspects of...

Also known as clear glass or clear filter. The clear glass plate is used to simulate a filter, in converging or diverging...

The limited light-gathering area of an optical system. The area is normally restricted to an edge or outer surface of an...

A photomultiplier tube (PMT) is a highly sensitive vacuum tube that detects and amplifies low levels of light. It is widely...

In a visual optical system, the axial distance from the last mechanical surface of the eyepiece to the exit pupil.

In physics, nuclear fusion refers to the process in which two atomic nuclei come together to form a heavier nucleus,...

The luminescence displayed when particular minerals are irradiated with β-rays and g-rays, after being exposed to...

Structured illumination microscopy (SIM) is an advanced optical imaging technique used in microscopy to enhance the...

Data communications network in a clearly defined geographical location, and extending no more than a few miles in length. It...

In a thermal imaging system, the smallest change in blackbody equivalent temperature that can be detected clearly by the...

Automated optical inspection (AOI) is a technology used in manufacturing processes, particularly in electronics, to...

Free-space optics (FSO), also known as optical wireless communication or optical wireless networking, refers to the...

1. The combination of the effects of two or more stimuli in any given sense to form a single sensation. With respect to...

The least space between two parallel lines that can be discriminated as a gap to the human eye. It is measured in terms of...

A fiber optic imaging bundle is a specialized optical device composed of multiple optical fibers bundled together. Each...

Also called coating jig allowance. That margin on an optical component that is outside the clear aperture for use in holding...

Adaptive optics (AO) is a technology used to improve the performance of optical systems by reducing the effects of...

A phenomenon, exploited for medical imaging, in which the nuclei of material placed in a strong magnetic field will absorb...

A device that provides means for accurately moving minuscule tools over the surface of a microscopic object. The motion...

1. The focal point. 2. To adjust the eyepiece or objective of a telescope so that the image is clearly seen by the observer....

An emulsion in which grains of the photosensitive material silver halide are deposited. Each grain, when exposed to light,...

Also called shining. Grinding and polishing one surface of a blank to permit a more thorough examination for quality.

An evacuated bulb containing a tungsten filament that is heated by passing an electric current through it. In domestic light...

The physical adaption of the eye lens, by means of ciliary muscle contraction, in order to maintain a clear, in focus image...

Differential interference contrast (DIC) microscopy, also known as Nomarski interference contrast microscopy, is an optical...

Activity of a radionuclide having one spontaneous nuclear transition per second.

Pixel binning, also known as pixel merging or pixel combining, is a technique used in digital imaging and camera technology....

An endoscope is a medical device used for visualizing and examining the interior of hollow organs, body cavities, or...

An intensified charge-coupled device that uses a large negative charge at the grid to switch off the flow of electrons at...

Excimer laser coronary angioplasty (ELCA) refers to a medical procedure used in the treatment of coronary artery disease....

Metabolic imaging refers to the visualization and quantification of metabolic processes within living organisms, tissues, or...

A spectrum that originates from molecules and that is composed of bands which, in turn, consist of many closely spaced...

Inertial fusion energy (IFE) refers to a proposed method of generating electricity by harnessing the energy released from...

Mie scattering, named after the German physicist Gustav Mie, refers to the scattering of electromagnetic radiation (such as...

The Mills Cross telescope is a two dimensional radio telescope in which the two antenna arrays are positioned perpendicular...

A radioactive element that is placed or injected into a system to obtain an autoradiogram of the system. It is used in a...

Astronomical detector consisting of a photocathode isolated from the target by a coin value from which electrons are focused...

Denoting a finished circular edge. A decentered lens is adjusted on a centering chuck so that its image runs true, and the...

An acronym for radioactive detection, identification and computation. The term refers to the detection and measurement of...

Prediction based on observations of nuclear masses in the valley of stability that indicates the maximum number of electrons...

An instrument that produces an intense, tightly focused beam of ions to stimulate emissions from a minute section of a...

A time-to-amplitude converter (TAC) is an electronic circuit that converts a time interval between two events into an...

A scientific CMOS (complementary metal-oxide-semiconductor) camera is a type of digital camera specifically designed for...

A photographic emulsion of the silver-halide type that is used to record the path of a charged traveling particle. The...

A photomicrographic recording technique that utilizes dark-field illumination to render an image of an object having a...

An astronomical telescope is a type of optical instrument designed to gather and magnify light from distant celestial...

A contour mapping technique that uses electronic scanning and sampling techniques instead of a reference grating (see moire...

Theoretical calculation of the cross section for a nuclear reaction given in the vicinity of a single resonance level in the...

A transparent plate ruled with black lines and equal, clear spaces. It is used as a multiple knife-edge for testing a...

A material consisting of very small colorless particles imbedded in a clear glass matrix. It is available in two forms:...

That branch of spectroscopy that applies to the study of interactions between energy and atomic nuclei. The simultaneous...

A scintillation detector is a radiation detection device that utilizes scintillation crystals to detect and measure ionizing...

In microscopy, the clear distance between the specimen being viewed and the first optical element of the objective lens.

Optical phase distortion refers to a phenomenon where the phase of an optical wavefront is altered as it propagates through...

The distortion of an object's true image as the result of abnormal atmospheric disturbances along the path traveled by the...

A filter purposely made to be placed before a lens to render the image rather unclear.

A detector array refers to a collection of individual detector elements arranged in a two-dimensional grid or matrix format....

A plate containing a uniform pattern of transparent holes in an opaque background, the clear area being nearly equal to the...

In an optical system, the gradual reduction of image illuminance as the off-axis angle increases, resulting from limitations...

In optics, the double refraction that is produced when stress is applied to a transparent material. Plastics, which are...

Microscopic investigation of two-dimensional areas of a three-dimensional object that can be quantitatively evaluated by...

A method of studying the chemical and physical properties of atoms and molecules (typically living tissue and chemical...