How are visible light waves produced?
How is light created?
Is light made up only of photons? Who invented light years? What is this light? What are the common sources of light? Can light exist without a source? What Is the Photon Theory of Light? How did eyes evolve for organisms and why we are capable to see light of limited wavelengths (400-700) only? Why was the creation of the incandescent light bulb important? Can light still exist without the source? If light is made of particles, how does it pass through glass? What does light and darkness represent? Why is light not matter? How do photons create color? Is light matter or non-matter? Can we see light? Can artificial light be used for photosynthesis? What objects reflect light? How the first eye on a creature evolved and why we are capable to see lights of limited wavelengths (400-700nm) only? Why does the pupil of our eye contracts in bright light and expands in dim light? What are photons? Why is the invention of the light bulb important? If humans did not have eyes, would we discover light? Who invented the light bulb? Does light have kinetic energy? In literature, what is the symbolism of light? Why does light posses a dual nature of both wave and particle only and nothing else? How is dark matter made? How old is light? How much energy does light have? Where do photons appear from when mass and energy are combined?