Infrared Radiation

Special cameras -> 'see' animals/people in the dark -> detect infrared radiation.

EVERY OBJECT EMITS INFRARED RADIATION

The hotter an object, the more infrared radiation it emits. 

Electromagnetic Spectrum - radio waves, microwaves, infrared radiation, visible light, ultraviolet, x-rays & gamma rays.

Electromagnetic waves -> electric & magnetic waves that travel through space.

The sun emits all types of electromagnetic radiation -> Earth's atmosphere blocks harmful radiation but not infrared radiation.

Solar furnace -> giant reflector -> focuses sunlight -> temp. at focus point the same as the Sun's surface (5500 degrees celsius).

The…