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PHYSICS MIND MAP (LENSES (SALT (Size, Attitude, Location, Type), HUMAN EYE…
PHYSICS MIND MAP
LENSES
SALT
S
ize
A
ttitude
L
ocation
T
ype
Types of Lenses
Converging
Convex
Diverging
Concave
Ray Diagrams
practice
Thin Lens + Magnification Equations
practice
HUMAN EYE
how does light behave
Be able to draw a diagram
Lens (eye doesn't work without it)
Retina (recieves all light from interacting light sources)
comes through pupil
Optic nerve
takes all of the light and helps it travel to brain
CAN HAVE DISEASES AND IMPERFECTIONS
perfected by lenses
short sighted
convergence is too short
corrected with diverging lenses
far sighted
convergence occurs too far
corrected with converging lens
eye is a converging lens
light supposed to converge right at the retina
MATERIALS
(different mediums)
index of refraction
tells speed of light in certain medium
Snell's Law
allow you determine index of refraction
predict where the refracted angle will be
calculate the angle of incidence
Apparent depth/location
know how litght bends
can figure out where light is going to appear
i.e. mirages
Critical Angle/Total Internal Reflection
when the refracted angle is at 90 degrees
incident ray less than critical angle
refractss
incident ray at critical angle
refracted angle is 90 degrees
essentially, light ray disappear
incident ray angle greater than critical angle
total internal reflection
how light changes
when light interacts with a different form it can...
be refracted (bending of light)
be reflected
be absorbed