Here's why:
* Night vision goggles: They use near-infrared radiation which is just beyond the visible light spectrum. These goggles amplify the faint infrared light emitted by objects at normal temperatures, allowing them to "see" in low-light conditions.
* Heat-seeking missiles: These missiles use infrared sensors to detect the heat signature of their targets. They are designed to track and target objects that are emitting more infrared radiation, typically due to their high temperature.
Key takeaway: Infrared waves are invisible to the human eye but carry information about heat and can be utilized for various technological applications.
