| Radiation: Two different kinds |
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| � | Something that �radiates�, or spreads out in |
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| �rays� |
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| � | High
speed particles (eg. high speed neutrons |
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| ejected
from a disintegrating atomic nucleus) |
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| � | Electromagnetic radiation: |
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| � | Towards shorter �wavelength� and higher energy: |
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| � | Visible light, Ultraviolet light, X-Rays, Gamma-Rays |
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| � | Towards longer �wavelength� and lower energy: |
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| � | Visible light, Infrared radiation, microwaves, radio waves |
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