LIGHT. Where does it come from? How does it bounce? Describe the EYE and vision.   

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In 4-6 by Guru (6.7k)  

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+8 votes
by Guru (6.7k)  

What is light and colours? Light is made up of energy and travels in a straight line in 299 792 km per second. Travelling at the speed of light, you could go around Earth 7.5 times in a second.

Thanks to Free School for excellent test prep video. 



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