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How are light emitting diodes able to produce so much light but without producing any heat?
The electrons in the electric circuit excite the atoms of the diode efficiently, not much energy is wasted (in the form of heat).
How do you save energy without eating lunch?
There are many ways to save energy, for example, light emitting diodes (LEDs) use much less energy than incandescent lighting or even fluorescent lighting. Whether you do or do not eat lunch seems to be irrelevant to the issue of saving energy.
Can there be a light that does not produce heat?
LED .. Light Emitting Diodes , they're known for their very low energy consumption and they do not emit much heat. As of now , there is no kind of light which does not produce heat . But , LED's fit in as very efficient light emitters which produce very less heat. Also LED's have a life line which is way greater when compared to normal lights. Hope this helps =)
How are light emitting diodes made?
They are made exactly the same way as ordinary semiconductor diodes, except that "binary semiconductors" (i.e. semiconductors made of two or more elements) are used instead of the silicon or germanium that ordinary diodes are made of. First these "binary semiconductors" have a much wider bandgap than silicon does, causing a photon to be generated by each electron dropping into a hole at the device junction. Second that "binary semiconductors" are selected to be transparent to the generated photons, allowing them to escape (both silicon and germanium are opaque to photons). By selecting different elements to make the "binary semiconductors" for the light emitting diodes, different width bandgaps can be produced causing photons of different energy (i.e. color) to be generated. A narrow bandgap produces infrared, a slightly wider bandgap produces red light, and so on up the rainbow until very wide bandgaps produce blue light or even ultraviolet. An ultraviolet light emitting diode can be coated with a phosphor (like a fluorescent light is) to produce white light.
What is infrared led?
An IR LED is used in applcations like remote controls...it's much the same as as a normal Light Emitting Diode...Just that the wavelength of the emitted light is not present in the visible spectrum...
What are energy efficient downlights?
LED lights are so much efficient when compared to other types of lights. They use light emitting diodes which are not only durable but also use up less energy thus reducing on the overall consumption.
What is led bulbs?
An LED bulb is made up of one or more light-emitting diodes, encased in plastic for protection. LEDs produce light much more efficiently than incandescent bulbs, with about 90% less heat, and are beginning to replace them in many applications.
What does a led floodlight do?
Led floodlights which stands for light emitting diode are energy alternative lights to the regular incandescent light bulbs. They release less energy and much more efficient in lighting as well as time.
How are light emitting diodes manufactured?
Very much like any other solid state electronic component, except for the use of binary semiconductors (e.g. gallium aluminum indium phosphide) instead of simple silicon or germanium.
Which has higher energy infrared light or gamma rays?
The energy of gamma radiation is much higher than the energy of infrared radiation. You are emitting infrared radiation, but gamma radiation is very harmful to living tissue.
Why is the traffic light made of arrays of led light?
Those are LEDs (light emitting diodes). They are used because they 1) use far less electricity than incandescent bulbs, and 2) they are brighter (thought they actually do not produce the same lumen as regular incandescent hence the large array) and 3) they have a much longer lifespan than other bulbs.
About how much money does a consumer save over three years by using a fluorescent bulb in place of an incandescent bulb?
The latest comparisons for energy efficiency and energy costs based on a 1200 hour incandescent lamp at 60 watts are;Light Emitting Diodes (LED) - 329 kWh/year at an operating cost of $32.85 per year.Incandescent Light Bulbs - 3285 kWh/year at an operating cost of $328.59 per year.Compact Fluorescents (CFLs) - 767 kWh/year at an operating cost of $76.65 per year.
