How is light produced?
What is light caused by?
What are the common sources of light? Can a light period be caused by stress? What happens when ultraviolet light shines on glass? How is infrared light dangerous? What is this light? Why does UV light cause contamination on optics, but not IR light? Essentially, why is photocontamination wavelength dependent? Is light made up only of photons? Is indirect LED light harmful to the eyes? How does gravity affect light? What happens to the photons when I switch off the light? Why is light not matter? Does gravity affect light? What objects reflect light? Why do ultraviolet lights have radiation? What causes eye color? What causes one eye to look either lighter or darker than the other? Why does fire emit light? Why does fire emits light? Why is (UV) Ultraviolet light dangerous? Why can't we see the light? Is light matter or non-matter? What happens when we switch on the light? What Is the Photon Theory of Light? Why is light affected by gravity if photons are massless? What does light and darkness represent? Why is there a Doppler effect with light? When light is absorbed by a solid where does it go? What causes variations in eye color? Can we see light? Why does light posses a dual nature of both wave and particle only and nothing else?