Biot's Hemisphere's Faraday's Ice Pail
Faraday's Ice Pail for demonstrating  that charges reside on the outside of a conductor.(1)
Biot's Hemispheres, for showing an electric charge resides on the outside of a conductor. These fit over the hollow sphere above.(2)

(1)Cenco catalogue J200, page 512
(2) Welch Scientific catalogue, 1965, page 184


Back to Topical Index    Back to Maker Index    Back to Device Index    Back to Date Index