Infrared radiation is energy transfer by electromagnetic waves. All objects emit Infared Radiation.
The hotter an object is, the mroe infrared radiation it emits in a given time.
Infrared radiation can travel through a vacuum.When infared radiation hits an object some of the energy is absorbed making the objects temperature increase and some is reflected.
Dark, matt surfaces are good absorbers and emitters of infrared radiation.
Light, shiny surfaces are poor absorbers and emitters of infrared radiation.
Uses of infrared radiation.
- Infrared heaters give out infrared radiation to heat a room.
- PIR's (passive infrared detectors) can be used as home alarm systems.
- Doctors use infrared lamps to treat skin diseases…