light Flashcards
reflection
light bounces off smooth object like still pool or a mirror
diffuse reflection
when light reflects of a rough surface
law of reflection
- light always travels in a straight line
- when it hits an object it will reflect in the opposite direction at the same angle as the light came came from
light
a form of energy and is part of the electromagnetic spectrum wavelength
electromagnetic spectrum (EMS)
a spectrum of the wavelength from gamma to radio waves
when light hits object it can be…
transmitted- (goes through it)
absorbed- (converted to heat)
reflected- (bounced off)
or combined with all three
colour
is light wavelengths reflected into your eyes
cornea
where refraction starts, light starts to hit
iris
controls how much light enters the eye
lens
focuses light
retina
sends messages to the brain
cones
sensitive to specific wavelengths of light
red
green
blue
rod
sensitive to brightness
