The most difficult inventions riddles A list of inventions related questions that are most often answered incorrectly Solar System quiz When was the lawnmower invented by Edwin Beard Budding?1830. Budding's mower was designed primarily to cut the lawn on sports grounds and extensive gardens and was granted a British patent on 31 August 1830. It took ten more years and further innovations to create a machine that could be worked by animals, and sixty years before a steam-powered lawn mower was built.very hard 22% 1830183022%1870187040%1910191029%195019507%Created by: Ninjai. Statistics based on 594 answers in 2 languages » When Joseph-Louis Lambot used reinforced concrete for the first time?1848. In 1841 he started constructing water tanks using cement mortar and iron reinforcement. In 1848 he constructed his first boat using the same system which was later presented at the 1855 World's Fair in Paris.very hard 23% 1848184823%1888188840%1918191825%193819389%Created by: Ninjai. Statistics based on 639 answers in 2 languages »history of technics riddles » What is Hero's engine?Steam turbine. An aeolipile (or aeolipyle, or eolipile), also known as a Hero's engine, is a simple bladeless radial steam turbine which spins when the central water container is heated. In the 1st century AD, Hero of Alexandria described the device in Roman Egypt, and many sources give him the credit for its invention.very hard 29% A globeA globe5%Steam turbineSteam turbine29%The airshipThe airship13%A hot air balloonA hot air balloon51%Created by: Tschuka . Statistics based on 187 answers in 2 languages »antiquity riddles » Who invented spectroscope?Joseph van Fraunhofer. Joseph Ritter von Fraunhofer was a Bavarian physicist and optical lens manufacturer. He made optical glass and achromatic telescope objective lenses, invented the spectroscope, and developed diffraction grating. very hard 30% Issac NewtonIssac Newton18%William HerschelWilliam Herschel23%Joseph van FraunhoferJoseph van Fraunhofer30%Edwin HubbleEdwin Hubble27%Created by: Ninjai. Statistics based on 5872 answers in 2 languages »inventors riddles » The Claw of Archimedes was used as ...Weapon that protected Syracuse. Archimedes devised defensive devices to counter the Roman efforts including a huge crane operated hook – the Claw of Archimedes – that was used to lift the enemy ships out of the sea before dropping them to their doom. very hard 30% irrigation toolirrigation tool23%weapon that protected Syracuseweapon that protected Syracuse30%buoyancy testbuoyancy test23%locksmith's toollocksmith's tool21%Created by: Tschuka . Statistics based on 242 answers in 2 languages »ancient Greece riddles » Who constructed the first radio receiver?Nikola Tesla. Marconi was considered to be the first radio constructor but in 1943 the US Supreme Court has granted Tesla patent rights. Marconi admitted he was using Tesla's work in his construction.very hard 33% Guglielmo MarconiGuglielmo Marconi40%Nikola TeslaNikola Tesla33%Alexander Graham BellAlexander Graham Bell17%Thomas EdisonThomas Edison8%Created by: Ninjai. Statistics based on 115 answers in 2 languages »inventors riddles » Where was the wheel first invented?In Mesopotamia. A wheel is a circular component that is intended to rotate on an axle bearing. The first evidence of wheeled vehicles appears in the second half of the 4th millennium BCE, in Mesopotamia (Sumerian civilization), hard 52% in Chinain China16%in Egyptin Egypt13%in Mesopotamiain Mesopotamia52%in Phoeniciain Phoenicia17%Created by: Tschuka . Statistics based on 184 answers in 2 languages »antiquity riddles » Where was black gunpowder invented?China. Black gunpowder was invented in 9th-century China and spread throughout most parts of Eurasia by the end of the 13th century. Originally developed by alchemists for medicinal purposes, gunpowder was first used for warfare about 1000 CE.easy 77% JapanJapan9%South KoreaSouth Korea5%ChinaChina77%IndiaIndia8%Created by: Ninjai. Statistics based on 1084 answers in 2 languages »firearms riddles » Play Solar System quiz and see all the questions.