Paddlewheel used by James Joule

Electromagnet Core made by James Joule

Electromagnet Core

Joule's Electro-Magnet (Calorimeter) Apparatus, 1843

Small frame containing two kinds of spider's thread

Electromagnet made by James Joule for experiments on lifting power

Joule's Cast Iron Friction Apparatus (Calorimeter), 1849

Mechanical equivalent of heat apparatus

Portable chemical balance

Part of Electromagnet

Wooden Roller Used By James Joule

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