AQA Physics Unit 1 - Communications

Radio - Tranmission

Microwaves - Cooking, Satellite

Infra Red- Optical Fibre's

Visible Light - Communication, Seeing

Ultraviolet Rays - Sunbeds

x-rays - Seeing broken bones

Gamma Rays - Killing cancer, sterilisation 

Radio - Increases Body Temp

Microwaves - Burns

Infra Red- Burns

Visible Light - Damage Eyes

Ultraviolet Rays - Damage Eyes, cause cancer

x-rays - cancer

Gamma Rays - causes cancer

VISIBLE LIGHT AND INFA RED USED.

TOTAL INTERNAL REFLECTION

MORE INFORMATION SENT AND QUICKER, LESS WEAKENING OF SIGNAL

ANY VALUE

INTERFERENCE LIKELY

WEAKEN OVER DISTANCE

ON OR OFF VALUES

INTERFERENCE HAS LESS EFFECT (STILL HAS EFFECT!)

DOESN'T WEAKEN SIGNAL

EASIER PROCESSED BY COMPUTER