Used for communications Energy Low energy Wavelength a few cm to a few km Frequency 10 2 Hz to 10 8 Hz Dangerousness Not dangerous Microwaves Used for communications amp heating food ID: 255494
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Slide1
Radio Waves
Used for communications
Energy: Low energy
Wavelength: a few cm to a few km
Frequency: 102Hz to 108Hz
Dangerousness: Not dangerous Slide2
Microwaves
Used for communications
& heating food Energy: Low
energy Wavelength:
0.1 cm to 10 cmFrequency: 109Hz to 10
11HzDangerousness:
Low risk Slide3
Infrared Waves
Used in remote controls,
to heat things and used todetect people & fires
Energy: Moderate energy
Wavelength: 0.0007 mm to 0.003 mmFrequency: 1012
Hz to 1014Hz
Dangerousness: Some risk (Can burn)Slide4
Visible Light
Used to see,
measure things & photographyEnergy:
Moderate energy
Wavelength: 0.0004mm to 0.0007 mmFrequency: 10
15HzDangerousness: Not dangerous
Slide5
Ultraviolet Light
Used in sunbeds, to kill
bacteria and in security markingEnergy:
Moderate energy
Wavelength: 0.00001mm to 0.0004 mmFrequency: 1016
HzDangerousness: Fairly
(burns skin & eyes) Slide6
X Rays
Used to see through things
Energy: High energy
Wavelength:
10-10 mFrequency:
1018 Hz Dangerousness:
Very
(High dose burns, causes cancer)Slide7
Gamma Rays
Used in medical treatment
& to sterilise thingsEnergy:
High energy
Wavelength: 10-14 m
Frequency: 1020 Hz
Dangerousness: Very
(High dose burns,
causes
cancer)