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Gustav Hellmann (1886)
Designed for use in laboratories but is an ideal choice for science classrooms and household use
and chemical synthesis
Easy Storage and Access: Transparent box allows for easy identification and access to diodes
Bell in Vacuum Gustav Hellmann (1886)Bell (Vacuum) Jar with stand base and with Electric Bell This apparatus usually used in combination with a pump to demonstrate that non transmission of sound in a vacuum. The apparatus content the metal base, the bell jar, and the bell. Bell jar dimensions: 250mm height, 180mm diameter
