Gamma rays X-rays Ultraviolet Visible Infra-red Microwaves Radio Wavelength size comparison Can penetrate atmosphere? Absorb Reflect Emit Transmit Penetrate Energy FrequencyWavelength Waves (Definitions of Frequency/Wavelength/Wave equation/amplitude) Ionisation/H ow this causes cancer Skins Protection Radiotherapy Ionosphere Heating and Absorption (Applies to all EM Waves but questions mainly on Microwaves and Infra-Red) Alternating Current/Voltage (Aerials etc) How EM waves interact with matter Annotate me... Optical Fibres Fluorescence X-Ray Photographs Sterilisation/Kill Harmful Bacteria Infra-Red Cameras Mobile Phones (Infra-Red, Bluetooth, Making calls etc) Satellite Communication International Radio Analogue and Digital signals (How waves used for communication can be sent) Other Info Used In Medicine Used mainly for communication Used to heat things up Local Radio and TV Prefixes nano (n) – micro (µ) – milli (m) – kilo (k) – 1000 Mega (M) – Giga (G) – Centi (c) – – km = 12000m 15cm = 0.15m 700nm = 7.0 x m You dont really need to know the small ones like milli and micro but it helps.... Info that can be sent Damage to human tissue DetectorsSources

EM Waves Interaction with Matter

Wave Basics

Prefixes

Gamma Rays

Radiotherapy

Sterilisation of surgical instruments and killing bacteria in food

X-Rays

X-Ray Photographs

Medical Physics

Ultraviolet

Flourescence

Sun tans and melanin

Ionisation of atoms

Cancer

Communications

Visible Light

Infra-Red

Infra-Red Cameras

Optical Fibres

Microwaves

Mobile Phones

Heat Transfer using EM Waves

Radiowaves

Satellite Communications

Local Radio and TV

International Radio

The Ionosphere

Aerials and Alternating Currents

Analogue and Digital Signalling