from bonfires to lasers

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Presentation transcript:

from bonfires to lasers LIGHT ! from bonfires to lasers

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

Sources of light A bonfire Hot objects give out light.

The Sun Sunset in Venice

Stars Stars and galaxies give out light. Picture: Liverpool Telescope

Lightning

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

Some cold things give out light: some fungi glow worms light sticks LEDs ‘glow-in-the-dark’ stickers

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

How do we see light sources? Light travels from a source to our eyes. We can see sources in a dark room.

Can we see in the dark?

How do we see things that are not sources of light? Light bounces off and some reaches our eyes.

Electromagnetic Radiation Characteristics of Waves

Electromagnetic Radiation Characteristics of Waves

Electromagnetic Radiation The Spectrum

Electromagnetic Radiation The Spectrum

Electromagnetic Radiation Line Spectra

Really Confusing Stuff!

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

How do light bulbs work? Click Here for Link

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