Light as Radiation
Science: KS3, topic 3.3.36
Infra-red Radiation
Infra-red radiation is a type of wave on the electromagnetic spectrum.
Uses
- Infra-red radiation is used in TV remote controls.
- Infra-red is also used in security systems, like intruder alarms, to detect body heat.
Risks
- High-intensity infra-red radiation can cause serious skin burns.
Test yourself on Light as Radiation
What type of wave is infra-red radiation?
Why can an intruder alarm detect a person even in a dark room with no light?