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Physics
Waves
Electromagnetic Waves
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Cards (9)
Electromagnetic waves are
transverse
waves.
All electromagnetic waves transfer energy as
radiation
from the sources of the waves to an absorber. can travel through a
vacuum
e.g space.
Radio waves: Transmitted easily through the
air.
e.g TV and radio
Microwaves
: Intense sources can be dangerous. e.g cooking food, bluetooth and satalite communications.
Infared: Heating effect can cause
burns.
e.g electric heaters, cookers and remote controls.
Visible
light: Contains limited ranger of frequencies that can be seen.
e.g
photography
Red
light has the
lowest
frequency
Violet
light has the
highest
frequency
X-rays and
gamma
rays:
Gamma
rays-kill cells in the body. e.g medical use.
Ultraviolet
radiation:
Kill
bacteria
in water
helps skin make vitamin
D
too much
exposure
can cause skin issues.
Electromagnetic
Wave
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