No, night vision cameras cannot see through walls. Night vision cameras use a technology called image intensification to amplify the existing light in an environment so that it can be seen in low-light or no-light conditions. This technology works by converting the light into electrons, which are then amplified and converted back into light. The amplified light is then displayed on a screen, allowing the user to see the image. Here is the full guide about how does night vision work.
However, image intensification cannot penetrate walls. Walls are made of materials that block light, including concrete, brick, and wood. This means that even if a night vision camera device (such as night vision phone) is pointed directly at a wall, it will not be able to see anything on the other side.
There are some cameras that can see through walls, but they use a different technology called thermal imaging. Thermal imaging cameras detect the heat emitted by objects, and they can create images that show the temperature distribution of an object or scene. This means that in some situations, thermal imaging cameras can be used to see people or objects that are hidden behind walls, but they cannot see through walls themselves. Here is the full guide about ‘Can a thermal camera see through walls’.
Thermal imaging cameras are often used by law enforcement and military personnel to detect people or objects in dark or obscured environments. They are also used by firefighters to find people who are trapped in burning buildings.