Week 5

Question 0

Propagation of energy through a vacuum or media in the form of electromagnetic waves but subdivided into discrete quanta

Answer 0

Radiation

Question 1

Physical energy that affects the eye providing the sensation of seeing

Answer 1

Light

Question 2

Pythagorus

Answer 2

Light particles emitted by objects intermission hypothesis

Question 3

Empedocles

Answer 3

Light created by eye illuminating objects emission hypothesis

Question 4

An oscillation in space and time that transfers energy without transferring matter

Answer 4

Wave

Question 5

of cycles passing a point in a unit of time

Answer 5

Frequency

always constant

Question 6

Velocity of light in a vacuum

Answer 6

Cv=3x10^8

Question 7

5 Rules of Light

Answer 7

1) light is a form of energy
2) light travels through empty space
3) light speed is “C” in vacuum
4) light travels in straight lines
5) obeys 3 laws
~reflection
~ refraction
~ both

Question 8

Refractive index

Answer 8

n=Cv/Cm

m/s

Question 9

Substage condenser

Answer 9

Focuses illumination onto specimen

Question 10

British Astronomer Royal Sir George Airy

Answer 10

Airy Disks

Question 11

Fermats Principle

Answer 11

Path of a light Ray from one point to another “the time of transit between these two points for the actual Ray is a minimum”