The term refrigeration means cooling a space, substance or system to lower and/or maintain its temperature below the ambient one (while the removed heat is rejected at a higher temperature).
invented by Edward Jenner
The smallpox vaccine was the first vaccine to be developed against a contagious…
invented by John hadley Thomas godfrey
The octant, also called reflecting quadrant, is a measuring instrument used…
invented by Eli Whitney
A cotton gin – meaning “cotton engine” – is a machine that…
invented by Alois Senefelder
Lithography (from Ancient Greek λίθος, lithos ‘stone’, and…
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Inventions that changed the world
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