11. In 1926, Lewis coined the term " photon " for the smallest unit of radiant energy . 12. That also conforms with the principle that radiant energy decreases with the square of the distance. 13. When the sun heats a roof, it's primarily the sun's radiant energy that makes the roof hot. 14. As such, they are very inefficient, because most of the radiant energy they emit is invisible infrared. 15. One of the earliest wireless telephones to be based on radiant energy was invented by Nikola Tesla. 16. An abstract generalization of color would be the frequency absorption for any arbitrary frequency of radiant energy . 17. The photon is destroyed in the process and the absorbed radiant energy is transformed to electric potential energy. 18. Take a look at radiant energy . 19. Radiant barriers will reflect radiant energy . 20. It is a process known as Radiant Heat Exchange, since Radiant Power & times; Time equals Radiant Energy .
