BRAINCAKERadioactivity
Alpha radiation emitted by radioactive substances causes strong ionisation of air particles making air conduct electricity. Alpha radiation is easily absorbed by air and has a range in air of a few centimetres only.
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Key terms in this lesson
- ionisation
- The process by which atoms or molecules gain or lose electrons to become charged ions.
More in Radioactivity
- Rutherford's α-Particle Scattering Experiment.
- Rutherford's Interpretation
- Radioactivity Observations
- Geiger Tube
- The nature of α, β and γ Radiation.
- Gamma radiation
- Radioactive Change
- The Dangers of Radioactivity
All 25 lessons in Radioactivity · All Edexcel A-level Physics topics