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Gamma rays X-rays Ultraviolet Visible Infra-red Microwaves Radio Wavelength size comparison Can penetrate atmosphere? Absorb Reflect Emit Transmit Penetrate.

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Presentation on theme: "Gamma rays X-rays Ultraviolet Visible Infra-red Microwaves Radio Wavelength size comparison Can penetrate atmosphere? Absorb Reflect Emit Transmit Penetrate."— Presentation transcript:

1 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

2 EM Waves Interaction with Matter

3 Wave Basics

4 Prefixes

5 Gamma Rays

6 Radiotherapy

7 Sterilisation of surgical instruments and killing bacteria in food

8 X-Rays

9 X-Ray Photographs

10 Medical Physics

11 Ultraviolet

12 Flourescence

13 Sun tans and melanin

14 Ionisation of atoms

15 Cancer

16 Communications

17 Visible Light

18 Infra-Red

19 Infra-Red Cameras

20 Optical Fibres

21 Microwaves

22 Mobile Phones

23 Heat Transfer using EM Waves

24 Radiowaves

25 Satellite Communications

26 Local Radio and TV

27 International Radio

28 The Ionosphere

29 Aerials and Alternating Currents

30 Analogue and Digital Signalling


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