How does the human body avoid the detection of night vision goggles?

Mythbusters has an episode about how to avoid thermal imaging cameras. You can look for it online.

Method 1

Wear a diving suit. The material of the diving suit is a bad conductor of heat, which has good heat insulation performance, that is to say, you only have a small amount of body temperature. If you wear a special "diving suit", you can avoid the thermal imaging camera. Disadvantages: the diving suit can only persist for a few minutes without being discovered.

Method 2

I once saw a documentary about polar bears. Some scientists use thermal imaging cameras to photograph polar bears in the snow. There are no signs of polar bears in thermal imaging cameras, because polar bears' fur and oil isolate their body temperature. If the oil is evenly spread all over the body, the thermal imaging camera can't take pictures of them. Disadvantages: after applying grease, the body can't move, because if the body moves, the grease may fall off, which is not the way for a long time.

Method 3

Cover the whole body with special materials. If there are special materials such as aluminum foil and plastic. Can remain undetected for dozens of minutes. Because plastic and rubber are heat preservation materials, and aluminum foil can reflect infrared rays, as long as the materials are not in contact with the body, thermal imaging cameras can't find them. Disadvantages: the information is not easy to find, and it may hang up if it is not found.

Method 4

Hiding in the depths of a building, in fact, as long as you hide in a building with more than two floors of walls, even a sensitive thermal imaging camera can't find you, because the infrared rays emitted by your body can't penetrate the wall, so it can't find you if you hide in a building with a fire in the basement. Disadvantages: can't walk, can't see outside. If it fires hellfire at your building, it will be miserable.

note:

It's not feasible to take a cold bath, because you'll know if you try. You will feel cold after a cold bath. Why do you feel cold? That's because your temperature is dropping. The more serious the body temperature loss, the more infrared rays will be emitted, and it will be found whether it is cold or not. But if you hide in the mud, you should be able to avoid it. Also, if you know that there is Apache nearby, you can raise your hand and walk out of the clearing to surrender, because you may be dead when you find it. But if it thinks you're not a threat, it shouldn't kill people indiscriminately.

Supplement: Night vision goggles mainly include low light and infrared. wtp=tt

If it is low-light night vision, it is easy to avoid, but active infrared night vision (also called thermal imaging camera) is more troublesome. In addition to the above four methods, I also thought of another simplest and most reliable method, which is hiding in the refrigerator or freezer. Because there is a thick insulation layer in the interlayer of the refrigerator or freezer, the temperature of the refrigerator is very low, so it should be no problem to hide in it for dozens of hours. Disadvantages: The refrigerator is airtight. If you don't open a crack, the people inside will suffocate in a few minutes, and you must unplug the power before entering the refrigerator or freezer.

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