Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message.
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Plywood
invented by Samuel Bentham
Plywood is a material manufactured from thin layers or “plies” of…
Vaccine
invented by Edward Jenner
Edward Jenner develops the first successful vaccine, the smallpox vaccine.
Smallpox vaccine
invented by Edward Jenner
The smallpox vaccine was the first vaccine to be developed against a contagious…
Cotton Gin
invented by Eli Whitney
A cotton gin – meaning “cotton engine” – is a machine that…
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Inventions that changed the world
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