How do night vision goggles work?

Such goggles can make night look bright as day.

Newest night-vision goggle finishes testing. Here's when Army units will get it

How Exactly do Night Vision Goggles Work?

What are night vision binoculars and how do they work? - Quora

11-Night Vision Goggles( 8 that work 3 that do not work)

Night Vision Guide

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How Do Night Vision Goggles Work

Buying Guide For Night Vision Goggles Understand How Night Vision Goggles Work