Thinking about absorbed dose

 

I found a great website explaining radiation dose here. It explains radiation dose in terms of sunburn. So the longer the time, the bigger the dose and the more intense the sunlight, the bigger the dose. I think exposure time is stochastic, certainly for low doses and that in medical terms, you can say that limiting exposure time limits stochastic effects. In the picture above, I am investigating aluminium shielding with a beta source and a Geiger counter. In medical terms, barriers or distance in air reduce the intensity and thus reduce non-stochastic damage.