Light energy is a type of kinetic energy with the ability to form types of light people can see as well as invisible waves. Light is a form of electromagnetic radiation, and hot objects, such as light bulbs, the sun and lasers, emit it.Know More
Light consists of photons, which are essentially tiny packets of energy. When an object's atoms heat up, this results in the production of photons and is how photon production occurs in most cases. The electrons in atoms find excitement from the heat, which results in them earning extra energy. The release of this energy is in the form of a photon, and more photons come out as the object gets hotter.
When light travels, it is in the form of a wave. However, no material or matter is necessary to carry the energy along for the ride. Because of this, light can travel through a space that has no air. This differs from sound waves because they have to pass through a liquid, a solid or a gas. Light energy is very fast, and nothing travels faster. When traveling through a vacuum, the speed of light is equal to 186,282 miles, or almost 300,000 kilometers, per second.Learn more in Optics & Waves
The ability to perceive sound is critical for the survival of most species on Earth, including humans. The ability to assess the environment through hearing evolved in a variety of ways in the animal kingdom, and high-functioning animals such as humans adapted the sense of sound as a means to communicate.Full Answer >
The difference between audible and inaudible sounds is their frequency ranges; it is relative to the ability of the human ear to only perceive as audible those sounds that fall within a frequency range between 20 and 20,000 hertz. Other organisms, such as insects, dolphins, dogs and bats, are capable of perceiving sounds that are outside of the frequency range that is audible to humans. Certain species of insects, for example, are capable of perceiving sounds that are four times as high as the upper sound frequency limit of human hearing.Full Answer >
Depth perception is the ability of the eye to see in three dimensions. This is possible as the two eyes form separate images of the same object on the retina, and then the brain combines the two images to form one single image.Full Answer >
Light travels at a considerably higher speed than sound. Light travels at a constant speed of 186,000 miles per second, but the speed of sound is only 761.2 mph.Full Answer >