Discovery of EM waves

Question 1

Who postulated that light coming from the eye travels in a straight line?

Answer 1

Euclid of Alexandria (325-265 BC)

Question 2

He worked on the reflection of light.

Answer 2

Euclid of Alexandria (325-265 BC)

Question 3

He was known for his geocentric model of the universe, whom also studied refraction of light and the color phenomena.

Answer 3

Claudius Ptolemy (100-170 CE)

Question 4

He used the apparent change in the position of stars to measure the speed of light.

Answer 4

James Bradley (1693-1762)

Question 5

As he measured the speed of light, he obtained value 3.0×10⁸ which is 1% of the current estimate.

Answer 5

James Bradley (1693-1762)

Question 6

More attempts of measuring light speed were made by which two scientists?

Answer 6

Galileo Galilei & Ole Roemer

Question 7

What is the current value of light speed?

Answer 7

299,910,000m/s (still aproximated as 3.0×10⁸)

Question 8

Who came up with the electromagnetic theory?

Answer 8

James Clerk Maxwell (1831-1879)

Question 9

Refers to electromagnetic fields that induce one another as they propagate capable of travelling through vacuums.

Answer 9

Electromagnetic theory (by Maxwell)

Question 10

Who discovered radio waves by building devices that can produce and receive them?

Answer 10

Heinrich Hertz (1857-1894)