Light Source
Provides light
Light Reflector
Reflects light
Transparent
Allows light to pass through
Luminous
Giving off light
Translucent
Allowing light to pass through
Opaque
Does not let light pass through
Reflection
When a light ray bounces off an object
Convex
Curved outward
Concave
Curving inward
Lens
Transparent object that focuses light rays
Visible light spectrum
The portion of the electromagnetic spectrum that is visible to the human eye: ROY G BIV
Frequency of a Wave
Number of complete waves that pass a point per second
Period of a Wave
Time time it takes one wavelength to pass a given point
Electromagnetic spectrum
All of the frequencies or wavelengths of electromagnetic radiation
Iris
Colored part of the eye
Retina
Area at back of the eye where the image forms
Cornea
Transparent outer covering of the eye
optic nerve
Nerve that carries image from the eye to the brain