10 science week 6 q2

refraction

the change in the direction of light when it passes from one medium to another of different density

refraction

result of the change in speed of light upon crossing the boundary of two different media

optical density

transparency of a substance to light

greater

the greater the refractive index, the __ the optical density is

1.0003

index refraction of air

1.309

index refraction for ice at 0 degree C

2.42

index refraction for diamond

refractive index

other term for index of refraction

vacuum

it is empty space

index of refraction

the optical density of a material is indicated by its ___, the ratio of the speed of light in a vacuum to that in the material

3x10^8

what is the value of constant

n=c/v

what is the formula for index of refraction

closer

the denser the medium, the __ the light is from the normal line

further

the less dense the medium, the __ the light is from the normal line

spherical lens

a piece of glass or transparent material that has at least one spherical surface

convex lens

a lens that is thicker in the middle than the edges

concave lens

a lens that is thicker in the edges than at the middle

optical center

the point through which all light rays pass without being bent

geometric center

for double concave or double convex, the optical center is the __

convex lens

converging lens

concave lens

diverging lens

focal length

distance from the optical center of the lens to the principal focus

principal axis

is the line joining the optical center and the principal focus