Ionising Radiation is a free interactive simulation of alpha, beta and gamma radiation penetration for GCSE Physics (Edexcel IGCSE 4PH1). Students vary the distance from the source and the absorber material and thickness, and measure the count rate, to investigate how radiation type affects penetration. No login required — includes a worksheet and self-marking quiz.
Aim: To investigate how radiation type, absorber thickness and distance affect the measured count rate.
| # | Radiation | Distance (cm) | Absorber | Thickness (mm) | Result | Actions |
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