Thermal cameras are special devices that detect heat instead of visible light. They work by capturing the infrared radiation emitted by objects, allowing us to see temperature differences. This technology is useful in various fields, such as firefighting, where it helps locate hotspots, and building inspections, where it can identify heat leaks. These cameras are also popular in security and surveillance, as they can see in complete darkness. By visualizing heat signatures, thermal cameras can help spot intruders or monitor wildlife at night. Their ability to reveal what the naked eye cannot makes them valuable tools in many situations.