Basics of Light

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What is light?

Light is a form of electromagnetic radiation that is visible to the human eye.

What is the speed of light in a vacuum?

The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s).

How does light behave when it encounters a medium?

Light can be absorbed, transmitted, or reflected by a medium.

What is the visible spectrum?

The visible spectrum refers to the range of wavelengths of light detectable by the human eye, approximately 380 to 750 nm.

What is wavelength?

Wavelength is the distance between two consecutive crests or troughs of a wave.

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