luminous flux वाक्य
उदाहरण वाक्य
मोबाइल
- In radiometry, radiosity, luminance, luminous flux, luminous intensity, illuminance, luminous emittance ).
- It is obtained by dividing the luminous flux by the radiant flux.
- Watts are units of radiant flux while lumens are units of luminous flux.
- Illuminance is a measure of how much luminous flux is spread over a given area.
- Retroreflective screens are seen as desirable due to the high image intensity they can produce with a given luminous flux from a projector.
- They deliver almost twice as much luminous flux as the old ones and run on half the amount of energy as the former ones.
- It reaches 80 % of its final luminous flux within 20 seconds, and the lamp can be restarted approximately five minutes after a power cut.
- Also, a real CFL probably has a lower LER than the best-case estimate above, and so emits more radiant power to produce the same luminous flux.
- If its area is 0.1 m 2 ( ~ 19 " monitor ) then the total light emitted, or luminous flux, would thus be 31.4 lm.
- Light with wavelengths outside the visible spectrum reduces luminous efficacy, because it contributes to the radiant flux while the luminous flux of such light is zero.
- :: You need something empirical, like a melanin count per square centimeter or some kind of light / color reading, like luminous flux or whatever's most appropriate.
- Spherical photometers can be used to measure the directional luminous flux produced by lamps, and consist of a large-diameter globe with a lamp mounted at its center.
- In comparison to conventional projectors, laser projectors provide a lower luminous flux output, but because of the extremely high contrast the brightness actually appears to be greater.
- The difference between the units " lumen " and " lux " is that the lux takes into account the area over which the luminous flux is spread.
- A full sphere has a solid angle of 4? steradians, so a light source that uniformly radiates one candela in all directions has a total luminous flux of.
- The luminous flux of xenon headlights in the Rapid models is 2, 000 lumens, so there is no need to install a headlight washer system or dynamic range adjustment.
- In this case, i . e . with the same luminous flux within the lens, the illuminance quadracially decreases and the luminous intensity quadratically increases with the image size.
- The standard ANSI IT7.215-1992 defines test-patterns and measurement locations, and a way to obtain the luminous flux from illuminance measurements, it does not define however a quantity named " ANSI lumen ".
- Luminous flux is not used to compare brightness, as this is a subjective perception which varies according to the distance from the light source and the angular spread of the light from the source.
- Smaller spheres are typically used to diffuse incoming radiation, while larger spheres are used to measure integrating properties like the luminous flux of a lamp or luminaries which is then placed inside the sphere.
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