Light, Infrared, Microwaves and Radio Waves

What detects visible light?
Visible light is the part of the electromagnetic spectrum that is detected by our eyes.
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What is the relation between wavelength and the colours of the electromagnetic spectrum?
The wavelength increases across the spectrum from violet to red. We see a mixture of all the colours as white light.
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What is visible light used for?
Visible light is used in photography
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What is infrared radiation?
Infrared Radiation is given out by all objects. The hotter the object, the more IR emitted. Used for devices such as TVs and CD players.
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What are microwaves?
Microwaves are used in communications. Microwaves transmitters produce wavelengths able to pass through the atmosphere. Used to send signals to satellites and within mobile phone networks.
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What are radio waves?
Radio waves transmit radio and TV programs and carry mobile phone signals
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Other cards in this set

Card 2

Front

What is the relation between wavelength and the colours of the electromagnetic spectrum?

Back

The wavelength increases across the spectrum from violet to red. We see a mixture of all the colours as white light.

Card 3

Front

What is visible light used for?

Back

Preview of the front of card 3

Card 4

Front

What is infrared radiation?

Back

Preview of the front of card 4

Card 5

Front

What are microwaves?

Back

Preview of the front of card 5
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