Product Code:
MACHANICE00108
Description:
Hydrometer Only
Specification:
Hydrometer Only -Make electricity by friction; store and transfer it; learn about
electrophorus and proof plane. Includes: electrophorus with charge plate
and handle; 6 friction rods, labeled; acetate and polyethylene cloth;
proof plane with transfer ball; neon lamp; conductive ball with hook;
pith balls; instructions.
