LIGHT !

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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
A bonfire

• Hot objects give out light.

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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.

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Electromagnetic RadiationCharacteristics of Waves
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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 Arent 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 1 Click Here for Link 2