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This lesson covers the hazards associated with different parts of the electromagnetic spectrum — as required by AQA GCSE Combined Science Trilogy (8464), Physics Paper 2, section 6.2. You must know the dangers of each type of EM radiation, understand the concept of ionising radiation, and be able to explain how exposure is minimised.
EM waves can be divided into non-ionising and ionising radiation based on their energy:
graph LR
subgraph "Non-ionising"
direction LR
R["Radio waves"] --> MW["Microwaves"]
MW --> IR["Infrared"]
IR --> VL["Visible light"]
end
subgraph "Ionising"
direction LR
UV["Ultraviolet"] --> XR["X-rays"]
XR --> GR["Gamma rays"]
end
style R fill:#27ae60,color:#fff
style MW fill:#27ae60,color:#fff
style IR fill:#27ae60,color:#fff
style VL fill:#27ae60,color:#fff
style UV fill:#e74c3c,color:#fff
style XR fill:#e74c3c,color:#fff
style GR fill:#e74c3c,color:#fff
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