Q:

What is light energy?

A:

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.

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.

Sources:

  1. jhu.edu

Is this answer helpful?

Similar Questions

  • Q:

    How do we see light?

    A:

    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 >
    Filed Under:
  • Q:

    Why do people need sound?

    A:

    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 >
    Filed Under:
  • Q:

    What is depth perception?

    A:

    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 >
    Filed Under:
  • Q:

    What is ultraviolet light?

    A:

    Ultraviolet light is a part of the electromagnetic spectrum that humans cannot see. It is composed of shorter wave lengths than visible light and lies beyond the blue end of the visible spectrum.

    Full Answer >
    Filed Under:

Explore