The Millikan Oil Drop Apparatus has an apparently inactive source. How may I repair this?
Certain Millikan Oil Drop Apparatuses (MODAs) had source assemblies that were milled backwards so that OFF = ON and ON = OFF. Alternatively, the thorium activity may be below specification; we specify thorium 232 with an activity of 0.00185 microCurie. In either case, please contact us and we will send you a replacement thorium source assembly (part # 003-06169). Replacing the assembly is simple:
Creation Date: 04/17/2002
Last Modified: 04/17/2002