Vintage engraving, electric pump - Vintage Nostalgia
Vintage engraving, electric pump

Vintage engraving middle ‘800, one of the first pump for fluids moved by electromagnetism.

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Archimedes’ principle experiment using a hand balance:  an iron piece weights less in water then in air - Vintage Nostalgia
Archimedes’ principle experiment using a hand balance: an iron piece weights less in water then in air

Any object, wholly or partially immersed in a fluid, is buoyed up by a force equal to the weight of the fluid displaced by the object (Archimedes’ principle).

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