| radiance |
The radiant flux as Watts per unit soled angle per unit of projected area of the source in units described as watts/m2/steradian. Steradain (sr) is the unit solid angular measurement, being the subtended surface area of a sphere divided by the square of the sphere radius. There are four steradians in a sphere. For instance the solid angle subtended by a cone of a half angle is 2 (1-cosine) steradians.
출처: www.aefos.com/html/glossary/r.htm
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| radiant |
The point in the sky from which a meteor shower seems to originate.
출처: www.go-astronomy.com/glossary/astronomy-glossary-r...
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| radian |
the SI unit of measurement of plane angles, equal to the angle subtended to the center of a circle by an arc whose length is equal to the radius of the circle. One radian equals 360°/2π or approximately 57.296°.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| radiant e. |
the energy of electromagnetic waves, such as radio waves, visible light, x-rays, and gamma rays.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| radiant h. |
heat applied to the surface of the body by rays from a source of infrared radiation, such as a heat lamp.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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