Lighting 101: Improving Lighting in Today's Classrooms

Lighting 101: Science – Saving the Planet with LED

Jun 1, 2017

What is a light-emitting diode?

Light-emitting diodes (LEDs) are solid-state devices that convert electric energy into light. They are a directional light source, meaning they emit light in a specific direction, which essentially decreases the amount of wasted light. Even though some LEDs might appear “white,” there are no actual white LEDs. They naturally produce a blue light that can be combined with different phosphor materials to change the color of the light. The most common colors are amber, red, green and of course blue.

Energy Efficient

LEDs are the most energy efficient lighting technology on the market. Not only do they last 20 times longer than any other artificial light source, they also contain no mercury or hazardous waste – making them 100% recyclable.

Also unlike other artificial light sources, LEDs are 100% visually efficient, meaning they produce radiation only in the visible spectrum with no harmful UV or wasted infrared. They produce more lumens per watt than other light sources, which result in a high efficacy due to the fact that they use less power to produce the same light output. LEDs are predicted by the U.S. Department of Energy (DOE) to replace almost all artificial lighting in the United States by 2030.

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