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This not only sets the right mood but also saves energy when full brightness is not needed. Often, you can get more than one feature in a single bulb; for example, many wi-fi enabled bulbs also have color change or dimming features. Smart light bulb benefits Smart bulbs offer a number ...
What is a Spectroradiometer: A spectroradiometer is a device designed to measure the “absolute radiation” energy emitted by a light source. This energy could possibly include the entire light spectrum: visible light, UV light, and infrared light. ...
Thanks CharLake, this is super helpful. I had a chance to raise this issue, and the wider issue of light pollution, at the Road Association meeting in early August. I never got the full story but it seems the light was installed, possibly at the wrong location, by Central Maine Power,...
Incandescence is light emitted by a hot object, while iridescence is a colorful phenomenon caused by light waves dispersing and reflecting off a surface or through a medium.
Lux is a measure of illuminance, the total amount of light that falls on a surface Lumens is a measure of luminous flux, the total amount of light emitted in all directions. LED spotlights When to use lux vs when to use lumens
The word "year," is normally a unit of time, but light-years measure distance. M. Aurelius/Shutterstock A light-year is a way of measuring astronomical distances in space. That doesn't make much sense because "light-year" contains the word "year," which is normally a unit of time. ...
The full spectrum of light coming from our Sun is probably the closest thing we have to a pure white light. You are right though @sammyG, the mood and setting can be easily effected by the color quality of the light. If I am going to photograph a subject and want a hard, cold ...
A salt lamp is simply a chunk of mined salt that has been hollowed out to allow room for a lightbulb or tiny candle. The light glows through the medium of the salt crystal, which can range in color from a dark salmon pink to a pale orange. Salt crystals for salt lamps are mined ...
a. What are the main damage modes in a gear system? Briefly describe their mechanism. b. What is the blacklash in a gear train? Why is an appropriate blacklash necessary for a gear system? What determines the brightness of a light bulb in a circuit?