Levi Hutchins invented the first alarm clock in 1787, ringing only at 4 AM
Levi Hutchins invented the first alarm clock in 1787, ringing only at 4 AM
Fax
Fax machine invented in 1843, 33 years before the telephone
Hedy Lamarr
Hedy Lamarr co-invented frequency hopping technology
Colossus computer
Colossus, 1943: first programmable computer to decrypt Nazi codes
Universal Turing machine
Alan Turing introduced the Turing machine in 1936
Microwave oven
Percy Spencer invented the microwave oven accidentally
Velcro was inspired by burrs sticking to a dog's fur
Velcro inspired by burrs; invented by George de Mestral in 1941
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