Unit 1.1 - The challenges of light

Question 1

What did Pythagoras discover about light?

Answer 1

He thought light came from our eyes in beams, illuminating everything we look at. This was disproven because if his theory was correct, we would be able to see in the dark.

Question 2

What did Euclid discover about light?

Answer 2

Discovered that light travels in straight lines, found that mirrors reflected light. The angle of the incoming beam of light, equals the angle of the reflected beam

Question 3

What did Ptolemy discover about light?

Answer 3

Discovered how light bends when it enters/exits a new medium

Question 4

What did Al-Haytham discover about light?

Answer 4

Showed that light bounces off objects and travels to the eye. Discovered that light does not come from the eyes, but rather travels to the eyes

Question 5

What did Newton discover about light?

Answer 5

Discovered that white light is made up of all the colors of the rinbow

Question 6

What did Ole Romer discover about light?

Answer 6

Discovered that light travels at a speed of 299798 km/s

Question 7

What did Michelson discover about light?

Question 8

Four properties of light

Answer 8

Light travels in straight lines
Light can be reflected
Light can bend
Light is a form of energy