light

Radio waves

Tv signals cell phone

Microwave

Telecommunications

Microwave waves

Infrared light

Remote controls

Lasers

visible light

Human vision

Visible lasers

Ultraviolet light

Uv lasers

Stimulates vitamin d production

X rays

Medical imagery

Cancer treatment

Gamma rays

Cancer treatment

nuclear delay

Properties of waves

Speed

Frequency

Wavelength

Short wave length

High frequency

High energy

Incandescence

Result of high temperature

Electric discharge

Passing electric currents through a gas

Phosphorence

Special material absorbs uv light and emits visible light over time

Fluorescence

Absorbs uv and emits visible light

Cornea

Clear dome shaped tissue

Iris

Coloured part of the eye

Controls the amount of light let in

Pupil

Opening in the center of the iris

Lens

Crystalline structure

Focuses light into retina

Retina

Sensory tissue

Contains photoreceptors

Optical nerve

Nerve that transmits electrical impulses from the retina to the brain

Camera

Converging lens

compound microscope

2 converging lens

Refracting telescope

2 converging lens