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3 Cards in this Set
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- Back
- 3rd side (hint)
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what is a wave?
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A wave is a disturbance moving through a material. Imagine a long elastic rope lying on a flat table, with one end tied to a fix point. IF you move the other end from side to side a pulse travels aling a rope. The diagram on the left shows the shape of the rope at different instants.
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pulse
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what causes a wave?
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You may have seen what happens uf you topple a line of donimos. As each one falls it knocks the next one over and so on right down the line. This is not a wave however just a single pulse. But now imagaine that the dominos are hinged at the bottom end and connected to each other at the top by springs
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dominos
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light waves
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people have always wondered what light really is. Fir a long time were unsure how best to think about light
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light
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