Physical description
6 colour polaroid photographs showing different angles of Glass donut for 2.8 MEV Betatron (Reg 61) (269.1,269.2, 269.3, 269.4, 269.5, 269.6) Photographs are of Reg 61: Glass donut for 2.8 MeV Betatron
From the collection of
The Ed Muirhead Physics Museum
