Infrared Radiation
Physics: AQA GCSE Higher, topic 6.4.5
Infrared Radiation
Infrared (or infra-red) radiation is one type of wave on the electromagnetic spectrum.
Uses
- Infra-red radiation is used in TV controls.
- Infra-red can also be used for security purposes, such as in intruder alarms by detecting body heat.
Risks
- Infra-red radiation can cause serious skin burns if emitted from high-intensity sources.
Explanation
- The frequency is high enough to excite particles in food. This increases their temperature.
- Infra-red cameras can detect a range of frequencies. These frequencies can be shown in different colours to depict images.
Test yourself on Infrared Radiation
What type of wave is infra-red radiation?