The exact composition of light has eluded physicists for years, but the predominant theory is that light is comprised of a kind of energy called electromagnetic radiation. This energy behaves like a wave and a particle in different situations. Scientists believe electromagnetic radiation is composed of bundles of energy called photons.Continue Reading
Photons are very different from any other type of particle, and physicists believe this is why light has the unique ability to behave like a wave and like a particle. Photons do not have any mass, and they have no electrical charge. They are completely stable, which means they do not break down or undergo any chemical reactions when exposed to any other substances. However, photons can interact with other particles, such as electrons, by transferring their energy to these particles. Photons are capable of being created and destroyed.
According to Ducksters, Albert Einstein was the first to develop the concept of the photon. However, the particle was named by Gilbert Lewis some years later. Light is not the only type of electromagnetic energy made of photons. Other types of the waves in the electromagnetic spectrum, including radio waves and ultraviolet, or UV, waves, are also made of photons.Learn more about Optics & Waves
Light makes colors fade because ultraviolet radiation is capable of breaking down the molecules of pigments and dyes. The long molecules that make up these colors are often unstable, and the energy that ultraviolet radiation strikes these molecules with is capable of breaking the weaker molecular bonds in the structure. This degrades the colors over time, and as more molecules break down, colors begin to fade.Full Answer >
Light is produced through a phenomenon known as electromagnetic radiation, which is composed of both a magnetic and an electrical component. Light, or visible light, is merely one small part of the overall electromagnetic spectrum. The entire spectrum includes gamma rays, X-rays, radio waves, microwaves and infrared light.Full Answer >
A particle of light is called a photon, which is a small particle made up of electromagnetic radiation. These particles have no charge or resting mass, but travel at the speed of light. The energy of photons cannot be divided, thus they are often referred to as energy packets.Full Answer >
Light waves, a form of electromagnetic radiation, are energy-carrying waves able to self-propagate through the vacuum of space at 3x10^8 meters per second. While "light" sometimes colloquially refers to the entire electromagnetic spectrum, visible light is actually a very small part of it.Full Answer >