Alarm clock

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