Visible light

Definition

Visible light is the portion of the electromagnetic spectrum that is detectable by the human eye. It ranges from approximately 400 to 700 nanometers in wavelength.

5 Must Know Facts For Your Next Test

1. Visible light is made up of different colors, each corresponding to a specific wavelength range within the spectrum.
2. The sequence of colors in visible light can be remembered by the acronym ROYGBIV: Red, Orange, Yellow, Green, Blue, Indigo, Violet.
3. Visible light is crucial for astronomical observations as it allows us to see stars, planets, and other celestial objects.
4. Prisms can disperse visible light into its component colors through refraction.
5. The Sun emits a significant portion of its radiation as visible light.

Review Questions

• What is the wavelength range of visible light?
• How does a prism affect visible light?
• Why is visible light important for astronomical observations?

Related terms

Electromagnetic Spectrum:

The full range of all types of electromagnetic radiation.

Wavelength:

The distance between successive peaks or troughs in a wave.

Refraction:

The bending of light as it passes from one medium to another.