Light Energy


Light Energy

Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum. The word usually refers to visible light, which is visible to the human eye and is responsible for the sense of sight.

Light Sources

Some light sources can be:

1. Electric light bulb

2. Candle flame

3. Sun and other stars

The Facts

  • Our main source of light is the Sun
  • A ray of light travels very fast (In space it's approximately 300,000 kilometers/second (FASTER THAN SOUND!!!!!!!)
  • Light travels in waves (like sound) and is made of energy particles called "Photons"
  • Dispersion by a prism shows that white light is a mixture of all the colors (spectrum)
  • When objects block the pathway of light, a shadow is created
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