The same radiation that can cause cancer can also cure it. The same gamma rays used to sterilise surgical equipment are the ones that kill tumour cells in radiotherapy. Radioactivity is one of science's greatest paradoxes: the very property that makes it dangerous — the ability to damage biological molecules — is exactly what makes it medically useful. The key is always about control: the right type, the right amount, directed at the right place, for the right time.
This introduction covers A Double-Edged Sword within Uses & Hazards of Radiation for GCSE Physics. Revise Uses & Hazards of Radiation in Atomic Structure for GCSE Physics with 18 exam-style questions and 5 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 1 of 17 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Uses & Hazards of Radiation
Which type of radiation is used in smoke detectors?
Explain how a smoke detector uses an alpha source to detect smoke.
Quick recall flashcards
Most ionising?
Alpha
Beta stopped by?
Few mm aluminium