How can you produce white LEDs?
What will be an ideal response?
One of the great advancements in LED technology was the development of white LEDs. There are two primary ways of producing white LEDs. One employs the use of three individual LEDs that emit the primary colors of red, green, and blue (RGB). The most common method employs a blue and ultraviolet LED with a yellow phosphor coating, much like the coating on fluorescent lights. The phosphor coating changes the monochromatic light produced by the blue/UV LED into a broad-spectrum white light.
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Grass has a cooling effect on its surroundings due to a process called ____________________
Fill in the blank(s) with correct word
What is the scientific process? Why is it important to observe, not just see? What is the difference?
What will be an ideal response?
The Indo-European peoples were agents of
a. cultural penetration and engagement. b. the spread of techniques for growing grains. c. the dissemination of African art forms. d. the rise of urban civilizations.
What precaution should be taken for coolers that are located outside?
What will be an ideal response?