With new optical device, engineers can fine tune the color of light

Among the first lessons any grade school science student learns is that white light is not white at all, but rather a composite of many photons, those little droplets of energy that make up light, from every color of the rainbow—red, orange, yellow, green, blue, indigo, violet.

from Phys.org - latest science and technology news stories https://ift.tt/2PdAlHK

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