Using traditional film is more or less how radioactivity was discovered in the first place: https://www2.lbl.gov/abc/wallchart/chapters/03/4.html https://www2.

Using traditional film is more or less how radioactivity was discovered in the first place: https://www2.lbl.gov/abc/wallchart/chapters/03/4.html https://www2.lbl.gov/abc/wallchart/chapters/03/4.html Using modern sensors seems like the logical extension of that.