Optical units are dimensionless units of length used in optical microscopy. They are used to express distances in terms of the numerical aperture of the...

convert inertial platform angles to signals usable for servo control optical units, one for the CM and a different one for the LM a mechanical frame, called...

both active optical networks and passive optical networks. An ONT can work in Single Family Unit/SFU mode (modem/bridge) or Home Gateway Unit/HGU mode (router)...

milli-absorbance unit (mAU) or milli-absorbance unit-minutes (mAU×min), a unit of absorbance integrated over time. Absorbance is related to optical depth by A...

international name or symbol for this unit of measurement—within the international system of units, this unit for optical power would need to be specified...

to the IPK. Unlike the units relating to mass, energy, temperature, amount of substance, and electromagnetism, the optical units were not massively redefined...

SI unit for optical power is the inverse metre (m−1), which is commonly called the dioptre (symbol: dpt). Converging lenses have positive optical power...

value of the multiple of the basic unit of rate, e.g., OC-48. The base unit is 51.84 Mbit/s. Thus, the speed of optical-carrier-classified lines labeled...

clocks improve based on optical clocks or the Rydberg constant around 2030. Technological developments such as lasers and optical frequency combs in the...

cable, also known as an optical-fiber cable, is an assembly similar to an electrical cable but containing one or more optical fibers that are used to...

An optical fiber, or optical fibre, is a flexible glass or plastic fiber that can transmit light from one end to the other. Such fibers find wide usage...

level components of the computer's central processing unit (CPU). These will be nonlinear optical crystals used to manipulate light beams into controlling...

An optical spectrometer (spectrophotometer, spectrograph or spectroscope) is an instrument used to measure properties of light over a specific portion...

Nazionale di Astrofisica) Osservatorio Astronomico di Padova. The Telescope Optical Unit development is funded by the Italian Space Agency, the Swiss Space Office...

In computing, an optical disc drive is a disc drive that uses laser light or electromagnetic waves within or near the visible light spectrum as part of...

fiber-optic communication, a single-mode optical fiber (SMF), also known as fundamental- or mono-mode, is an optical fiber designed to carry only a single...

The second (symbol: s) is the unit of time in the International System of Units (SI), historically defined as 1⁄86400 of a day – this factor derived from...

Optical rotation, also known as polarization rotation or circular birefringence, is the rotation of the orientation of the plane of polarization about...

appropriate range of wavelengths and power levels. On the display unit, the measured optical power and set wavelength is displayed. Power meters are calibrated...

i {\displaystyle i} denotes the imaginary unit. The optical conductivity is most often measured in optical frequency ranges via the reflectivity of polished...

decibel quantities. In spectrometry and optics, the blocking unit used to measure optical density is equivalent to −1 B. In connection with video and digital...

An optical fiber connector is a device used to link optical fibers, facilitating the efficient transmission of light signals. An optical fiber connector...

Optical tweezers (originally called single-beam gradient force trap) are scientific instruments that use a highly focused laser beam to hold and move...

SI Brochure: Unit of time (second) National Research Council of Canada: Cesium fountain clock National Research Council of Canada: Optical frequency standard...

Optical flow or optic flow is the pattern of apparent motion of objects, surfaces, and edges in a visual scene caused by the relative motion between an...

(non-power-consuming) optical splitters, and a number of optical network units (ONUs) or optical network terminals (ONTs), which are near end users. There...

opticians. There are 78 Local Optical Committees in England. They are supported by the Local Optical Committee Support Unit which provides a link to the...

quantities other than spatial frequency. For example, in optical spectroscopy, it is often used as a unit of temporal frequency assuming a certain speed of light...

reference to one milliwatt (mW). It is used in radio, microwave and fiber-optical communication networks as a convenient measure of absolute power because...

transfer rates vary depending upon the optical technology used. One of the first examples of an optical jukebox was the unit designed and built at the Royal...