radio waves have the longest wavelength which is longer than 30 centimeters all radios and...
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Radio WavesRadio Waves• Radio waves have the longest wavelength
which is longer than 30 centimeters
• All radios and televisions use radio waves.
• Radio waves are also used in walkie talkies
Walkie talkies
Satellite dish
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• Microwaves have a wavelength between 1 millimeter and 30 centimeters.
• Microwaves (obviously) are used for microwave ovens. (gasp!)
• Microwaves are also used in cell phones because they can send messages over long distances.
Cell phones
microwave
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• Infrared waves have a wavelength between 700 nanometers and 1 millimeter
• The sun produces infrared which you feel as heat.
• Infrared also helps your night vision.
Night vision
sun
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• Visible light's wavelength ranges from 400 nanometers to 700 nanometers
• Visible light helps us to see colors.
• The sun produces a kind of visible light called white light.
ROY G. BIV
Sun beam
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• X-rays have a wavelength ranging between .001 nanometers and 600 nanometers
• X-rays are used to take pictures of your bones because they can go through skin and muscles but not bones.
• X-rays are also used in public security cameras
Security camera
bones
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• Ultraviolet rays have a wavelength between 60 nanometers and 400 nanometers
• Too much ultraviolet rays can cause sunburn
• They make lamps that use ultraviolet rays that kill bacteria.
sunburn
lamp
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Gamma Rays
• Gamma rays have a wavelength of less than .1 nanometers
• Gamma rays are used to treat some forms of cancer
• Gamma Rays are also used to kill harmful bacteria in foods
Cancer cell
hamburger
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