Week 4

Question 1

Particle theory

Answer 1

Newton. Light energy comes in bundles called photons. # of photons determines intensity of light, which is related to the subjective diversion of brightness

Question 2

Philosophical background

Answer 2

“Intelligent design”: Paley. Complexity of structure, function of eye implies creator (parable of the watchmaker). “Evolutionary theory” (blind watchmaker): structure of eye reveals exactly the kinds of non-optical designs one would expect from evolution due to random variation/directional selection

Question 3

Sclera

Answer 3

White part of eye

Question 4

Cornea

Answer 4

Gathers/focuses light

Question 5

Aqueous humor

Answer 5

Behind cornea, fluid filled chamber

Question 6

Iris

Answer 6

Constricts/dilates

Question 7

Lens

Answer 7

Changes shape to accommodate light

Question 8

Refractive error

Answer 8

When lens bends light too little/too much

Question 9

Hypermetropia

Answer 9

Far sighted

Question 10

Myopia

Answer 10

Near sighted

Question 11

Wave theory

Answer 11

Maxwell. Light is made up of electromagnetic radiation that switches between 2 energy states: light “wave” variations in wavelength within visible spectrum correspond to color

Question 12

Webers law

Answer 12

^I=KI

Question 13

Fechners law

Answer 13

S=klogR

Question 14

Stevens law

Answer 14

S=aI*b