Even though light has been visible to humans for thousands of years, it was Sir Isaac Newton who managed to understand what light consists of. Newton was the first person to realize that white light consists of a mix of light rays of various colors.
Newton began his experiments about light in 1662. Other scientists had been interested in deciphering the phenomenon, but none of them managed to come up with an explanation. Francesco Maria Grimaldi, a Jesuit priest, was another pioneer in the study of light. He conducted several experiments and coined the term "diffraction," which is still used today.Learn More
The human eye sees light with the pupil and the retina. Located inside the retina are two types of special cells called photoreceptor cells. There are two varieties of photoreceptor cells known as cones and rods.Full Answer >
A tritium light is a green, glowing light source that has been chemically created with radioactive hydrogen and phosphor. The tritium light is created by sealing tritium gas inside laser-sealed glass tubes coated with phosphor.Full Answer >
Light is made of photons, which are fundamental particles. Because photons have no mass, relativistic effects allow them to travel at appropriately the speed of light.Full Answer >
Polarized light can be identified by light waves aligned parallel to one another. Light is polarized when it is reflected from a transparent material-like glass or when it is scattered by particles suspended in the atmosphere.Full Answer >