Universal Battery Charger Heat & Thermodynamics_Temperature & Heat Hand-cranked pulley steps up to

Hand-cranked pulley steps up to a smaller dynamo pulley through a rubber belt

Zinc alloy natural gas Bunsen burner with flame stabilizer ships with a 2-foot neoprene gas hose for quick bench hookup in chemistry classrooms

providing a stable burner on classroom benches while controlling flame type through a collar

Converts chemical energy to electrical through a zinc-copper-sulfate redox couple

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Universal Battery Charger Heat & Thermodynamics_Temperature & Heat Hand-cranked pulley steps up toDesigned to recharge the cells used in laboratory apparatus, this universal charger keeps portable instruments running between sessions without rotating in fresh disposable batteries.