Which of the following types of electromagnetic waves is used in night vision goggles?

JAMB Physics 2023 323 views
Source: JAMB · 2023

Which of the following types of electromagnetic waves is used in night vision goggles?

  1. Radio waves
  2. Microwaves
  3. Infrared waves ✓
  4. Ultraviolet waves
Explanation

Warm bodies give off infrared waves. Night vision goggles detect this heat radiation and turn it into a visible picture.

This lets you see people and animals in the dark.

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