Small frame containing two kinds of spider's thread

maker:
James Prescott Joule
Small frame containing two kinds of spider's thread

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Small frame containing two kinds of spider's thread
Science Museum Group
© The Board of Trustees of the Science Museum

Small frame containing two kinds of spider's thread, as used in Joule's dip circle

Details

Category:
Terrestrial Magnetism
Object Number:
1876-859
credit:
Dr. James Prescott Joule.