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13 Cards in this Set
- Front
- Back
- 3rd side (hint)
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what is refraction?
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when light passes from one transparent material into another transparent material
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when will refraction happen?
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if the two transparent materials are different
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How can we see refraction?
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if we use a rectangular bloxk and a ray box with a slit
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What happens as light rays pass from air into glass?
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it bends inwards towards the normal because its travelling from a less debse medium into a more dense one
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What happens if the light meets the boundary at 90°c?
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it travels straight on but slows down as it enters the block
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what is dispersion?
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when white light passes through a glass prism it splits into a range of colours called a spectrum!
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what colours are dispersed?
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red orangw yellow green blue indigo violet
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Which light is bent the least by the prism?
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the red light
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which light is bent the most?
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the violet one
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What is reflection?
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when light hits a plain surface the direction of movent changes
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angle of incidence=?
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angle of reflection
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What happens when light hits an irregular surface?
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the light rays reflect in all different angles due to the uneven surface
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this is called diffuse reflection
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how can we measure speed
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distance
---------'- speed×time |
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