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Watt/cm2
| Glossary Of Laser Terminology |
A unit of irradiance used in measuring the amount of power per area of absorbing surface, or per area of cw laser beam.
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Irradiance, английский
- The density of the luminous flux which is incident on a surface.
- Интенсивность излучения
- The direct, diffuse, and reflected solar radiation that strikes a surface. usually expressed in kilowatts per square meter. irradiance multiplied by time equals insolation.
- The direct, diffuse, and reflected solar radiation that strikes a surface. usually
- Power of electromagnetic radiant energy incident on or radiated from the surface of a given unit area. compare radiance.
- Radiant power falling upon a known surface area at a given angle. compare radiance. see also radiometer. ishiharatm plates: trade name for a kind of pseudoisochromatic plates, used for color differentiation vision testing.
- Total radiant power, in watts per square meter (w/m2), falling upon a known surface area at a given angle.
- Total radiant power, in watts per square meter (w/m2), falling on a known surface area at a given angle. compare radiance. see also radiometer. irradiance, effective: measure of spectrally weighted radiant power in watts per meter-squared, as determined with a sensor whose responsivity replicates some desired action spectrum. compare irradiance; irradiance, spectral. irradiance, spectral: measure of energy emitted by a radiation source as function of wavelength. units of spectral irradiance are watts per square meter per nanometer (w·m–2·nm–1) and are often plotted versus wavelength. see also spectral power distribution. ishihara plate: trade name for a kind of pseudoisochromatic plate used for color differentiation vision testing.
- Radiant power falling upon a known surface area at a given angle. in nondestructive testing, the unit for irradiance of a uv-a source is microwatt per centimeter squared (?w·cm–2) and maximum irradiance occurs when the source and surface are perpendicular.
- Radiometer. j
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Angstrom, английский
- A unit of measure of wavelength equal to 10-10 meter, 0.1 nanometer, or 10-4 micrometer; no longer widely used nor recognized in the si system of units.
- Unit to define wavelength of light, ultraviolet energy and x-rays; one angstrom
- A unit of length; used to express electromagnetic wavelengths; 1 a = 10?10 meter = 1?10 nanometer. abbr. a.
Joule (j), английский
A unit of energy (1 watt-second) used to describe the rate of energy delivery. it is equal to 1 watt-second or 0.239 calorie. a basic unit of energy. a 1 watt transmitter radiates 1 joule of energy every second. joule/cm2 is a unit of radiant exposure used in measuring the amount of energy incident upon a unit area.
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