EM radiation
- Created by: abic1
- Created on: 03-05-16 17:41
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- EM radiation
- EM spectrum
- Gamma, Xray, Ultraviolet, Light, Infrared, Microwaves, Radiowaves
- radiation transfers energy in photons
- photons are packets of energy
- visible light is what can be detected by our eyes
- EM radiation is emitted from a source
- the frequency of thermal energy increases with temperature
- all EM radiation can travel through a vacuum
- travels at the speed of light 300,000 km/s
- EM radiation is transmitted, reflected and absorbed
- transmitted means the radiation keeps going through the object
- reflected means the radiation bounces back
- absorbed means it's taken in
- objects that absorb radiation are called detectors
- intensity decreases as the distance from the source increases
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