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EM Spectrum Posters
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Radio Waves
Used for communica/ons Energy: Low energy
Wavelength: a few cm to a few km
Frequency: 102Hz to 108Hz
Dangerousness: Not dangerous
Microwaves
Used for communica/ons & hea/ng food
Energy: Low energy
Wavelength: 0.1 cm to 10 cm Frequency: 109Hz to 1011Hz Dangerousness: Low risk
Infrared Waves
Used in remote controls, to heat things and used to
detect people & res
Energy: Moderate energy
Wavelength: 0.0007 mm to 0.003 mm Frequency: 1012Hz to 1014Hz Dangerousness: Some risk (Can burn)
Visible Light
Used to see, measure things & photography
Energy: Moderate energy Wavelength: 0.0004mm to 0.0007 mm Frequency: 1015Hz Dangerousness: Not dangerous
Ultraviolet Light
Used in sunbeds, to kill bacteria and in security marking
Energy: Moderate energy
Wavelength: 0.00001mm to 0.0004 mm Frequency: 1016Hz Dangerousness: Fairly (burns skin & eyes)
X Rays
Used to see through things Energy: High energy Wavelength: 10-10 m Frequency: 1018 Hz Dangerousness: Very (High dose burns, causes cancer)
Gamma Rays
Used in medical treatment & to sterilise things
Energy: High energy Wavelength: 10-14 m Frequency: 1020 Hz Dangerousness: Very (High dose burns, causes cancer)