LIGHT !from bonfires to lasers

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How many sources of light can you think of? In groups. Winning group gets to leave early

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Sources of light

Hot objects give out light.

A bonfire

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The Sun Sunset in Venice

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Stars

Stars and galaxies give out light.

Picture: Liverpool Telescope

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Lightning

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A worm living in dark caves sends out light from its tail.

Liquid droplets form a string of shining beads to attract insects.

tail of worm

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Some cold things give out light:

some fungi glow worms light sticks LEDs ‘glow-in-the-dark’

stickers

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Finding Nemo Fish!Also known as an angler fish which only the females luminesce.

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How do we see light sources?

Light travels from a source to our eyes.

We can see sources in a dark room.

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Can we see in the dark?

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How do we see things that are not sources of light?

Light bounces off and some reaches our eyes.

Electromagnetic RadiationCharacteristics of Waves

Electromagnetic RadiationCharacteristics of Waves

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Electromagnetic RadiationThe Spectrum

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Electromagnetic RadiationThe Spectrum

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Electromagnetic RadiationLine Spectra

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Really Confusing Stuff!

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More Really Confusing Stuff – Aren’t you excited for chemistry

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How do light bulbs work?Click Here for Link

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How do fluorescent lights work?Click Here for Link 1Click Here for Link 2