Lesson 3 of 5 • 0 upvotes • 13:10mins

Radiations Gamma rays, X rays, vacuum ultra violet, ultra violet, violet, indigo, blue, green, yellow, orange, red, infrared, far infrared, microwave, radiowave radiations, spectrum, LASER, cathode ray, anode rays, Alfa rays, beta rays etc.
5 lessons • 1h 3m