What does an infrared camera primarily detect to form an image?

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Multiple Choice

What does an infrared camera primarily detect to form an image?

Explanation:
Infrared cameras form images from infrared radiation emitted by objects, which is heat energy. The sensor detects these infrared photons across the infrared spectrum and converts them into an electrical signal to create a temperature-based image showing heat differences. Visible light reflected is what ordinary cameras use, not thermal imaging; sound waves require a microphone, and ultraviolet radiation is outside the typical infrared range used for thermal imaging. So the primary signal an infrared camera relies on is the infrared radiation emitted by objects.

Infrared cameras form images from infrared radiation emitted by objects, which is heat energy. The sensor detects these infrared photons across the infrared spectrum and converts them into an electrical signal to create a temperature-based image showing heat differences. Visible light reflected is what ordinary cameras use, not thermal imaging; sound waves require a microphone, and ultraviolet radiation is outside the typical infrared range used for thermal imaging. So the primary signal an infrared camera relies on is the infrared radiation emitted by objects.

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