@ColinTheMathmo In 1950, the ballet/pantomime "Isotopia" was performed. It was a creation by Muriel Howarth, apparently a radioactivity enthusiast. It featured people portraying protons, neutrons, electrons and a Geiger counter. Apparently, this is what Time magazine wrote about it:
“13 bosomy A.E. Associates in flowing evening gowns gyrated gracefully about a stage in earnest imitation of atomic forces at work. An ample electron in black lace wound her way around two matrons labeled ‘proton’ and ‘neutron’ while an elderly ginger-haired Geiger counter clicked out their radioactive effect on a pretty girl named Agriculture. At a climactic moment, a Mrs. Monica Davial raced across the stage in spirited representation of a rat eating radioactive cheese.”