Tag: science & technology

Sir Frank Whittle invented the jet engine in the 1930s, patented in 1930. Gottlieb Daimler worked on early internal combustion engines for vehicles. Roger Bacon was a medieval scholar (not to be confused with gunpowder's Chinese inventors). Lewis E. Waterman invented the fountain pen.

Early parachute testing was extremely dangerous, with many inventors and testers dying during development. Fauste Veranzio and others tested prototypes by jumping from towers, and early designs were often fatal. Dynamite, ladders, and race cars can be dangerous but were not defined by causing deaths specifically during their testing phase.

The first solid chocolate bar emerged gradually in the mid-19th century as chocolate transitioned from a drink to a solid food. There is no single definitive date - Fry's (1847) and Cadbury (1849) both claim early bars. The dates given (1825, 1828, 1831) are all plausible for developments in chocolate processing, but no single 'first bar' date exists.

Alexander Graham Bell patented the telephone in 1876, placing the invention in the 1870s decade. The 1850s and 1860s were too early, and by the 1880s the telephone was already being commercially deployed and improved.

Stanley Cohen and Herbert Boyer developed recombinant DNA technology in 1973, which is considered the foundation of genetic engineering. They demonstrated that bacterial DNA could be cut and spliced, creating the first genetically modified organism. The other name pairs are fictional.

Eugene Polley, a Zenith engineer, invented the first wireless television remote control called the Flash-Matic in 1955. It used light beams to change channels and mute the sound, though it could be disrupted by sunlight. This invention revolutionized TV viewing convenience and became a household essential.

Benjamin Franklin invented bifocal spectacles in the late 18th century to address his own vision problems. He cut two lens types in half and mounted them in a single frame, allowing users to see both near and far objects. The other options are incorrect: radio was developed by Guglielmo Marconi, barometer by Evangelista Torricelli, and hygrometer by Nicolas de Saussure.

Play-Doh was invented by Joe McVicker in 1956. Originally created as a wallpaper cleaner by his company Kutol Products, McVicker repositioned it as a children's modeling toy when classroom use was discovered. It became one of the most popular creative toys in history. Silly Putty (1943), Etch-A-Sketch (1959), and Lite-Brite (1967) were invented by others at different times.