Colour emitted by the LED depends on the amount of energy released by elections and it's characteristics of dopants used in the manufacturing of diodes.
Why do different chemicals emit different colors of light?
Question 4 a) Why must the quark in a hadron have different colors? Would they have different colors if their spin were 0 ord rather than%?
Light emitting diodes (LED) light bulbs have become required in recent years, but do they make financial sense? Suppose a typical 60-watt incandescent light bulb costs $.43 and lasts 1,000 hours. A 15-watt LED, which provides the same light, costs $3.30 and lasts for 12,000 hours. A kilowatt-hour of electricity costs $.119. A kilowatt-hour is 1,000 watts for 1 hour. If you require a return of 10 percent and use a light fixture 500 hours per year, what is the...
Light emitting diodes (LED) light bulbs have become required in recent years, but do they make financial sense? Suppose a typical 60-watt incandescent light bulb costs $.47 and lasts 1,000 hours. A 15-watt LED, which provides the same light, costs $3.50 and lasts for 12,000 hours. A kilowatt-hour of electricity costs $.123. A kilowatt-hour is 1,000 watts for 1 hour. If you require a return of 9 percent and use a light fixture 500 hours per year, what is the...
Light emitting diodes (LED) light bulbs have become required in recent years, but do they make financial sense? Suppose a typical 60-watt incandescent light bulb costs $.49 and lasts 1,000 hours. A 15-watt LED, which provides the same light, costs $3.60 and lasts for 12,000 hours. A kilowatt-hour of electricity costs $.125. A kilowatt-hour is 1,000 watts for 1 hour. If you require a return of 11 percent and use a light fixture 500 hours per year, what is the...
About 1% of a certain type of LED diodes fails during a 24-hour test. Failures are assumed to be independent.Consider a lightstrip consisting of 10 such LED diodes.Let X be the number of LED diodes that fail during the 24-hour test.i) What distribution does X follow?ii) What is the probability that the lightstrip will burn for the full 24-hour test with no LED diodes failure?iii) What is the probability that the lightstrip will lose at least 3 LED diodes during...
Light emitting diodes (LED) light bulbs have become required in recent years, but do they make financial sense? Suppose a typical 60-watt incandescent light bulb costs $.37 and lasts 1.000 hours. A 15-watt LED, which provides the same light, costs $3.00 and lasts for 12,000 hours. A kilowatt-hour of electricity costs $.113. A kilowatt-hour is 1000 watts for 1 hour. If you require a return of 10 percent and use a light fixture 500 hours per year, what is the...
24 Light emitting diodes (LED) light bulbs have become required in recent years, but do they make financial sense? Suppose a typical 60-watt incandescent light bulb costs $.53 and lasts 1,000 hours. A 15-watt LED, which provides the same light, costs $3.80 and lasts for 12,000 hours. A kilowatt-hour of electricity costs $.129. A kilowatt-hour is 1,000 watts for 1 hour. If you require a return of 9 percent and use a light fixture 500 hours per year, what is...
Why do hydrogen and mercury lamps produce different colors? Why is the emission spectrum from hydrogen interesting?
Light emitting diodes (LED) light bulbs have become required in recent years, but do they make financial sense? Suppose a typical 60-watt incandescent light bulb costs $.53 and lasts 1,000 hours. A 15-watt LED, which provides the same light, costs $3.80 and lasts for 12,000 hours. A kilowatt-hour of electricity costs $.129. A kilowatt-hour is 1,000 watts for 1 hour. If you require a return of 9 percent and use a light fixture 500 hours per year, what is the...