Now you Know
13010. Invention
Invention : battery, electric storage
Year : 1800
Inventor : alessandro volta
Country : italy.
13011. Invention
Invention : beer
Year : before 6000 bc
Inventor : sumerians, babylonians
Country : mesopotamia.
13012. Invention
Invention : bicycle
Year : 1818
Inventor : baron karl de drais de sauerbrun
Country : germany.
13013. Invention
Invention : bifocal lens
Year : 1784
Inventor : benjamin franklin
Country : us.
13014. Invention
Invention : bikini
Year : 1946
Inventor : louis reard
Country : france.
13015. Invention
Invention : blood bank
Year : late 1930s
Inventor : charles richard drew
Country : us.
13016. Invention
Invention : blow-dryer
Year : 1920
Inventor : racine universal motor co., hamilton beach manufacturing co.
Country : us.
13017. Invention
Invention : bomb, atomic
Year : 1945
Inventor : j. robert oppenheimer, et al.
Country : us.
13018. Invention
Invention : bomb, thermonuclear (hydrogen)
Year : 1952
Inventor : edward teller, et al.
Country : us.
13019. Invention
Invention : boomerang
Year : c. 15,000 years ago
Inventor : aboriginal peoples
Country : australia.
13020. Invention
Invention : braille system
Year : 1824
Inventor : louis braille
Country : france.
13021. Invention
Invention : brassiere (bra)
Year : 1913
Inventor : mary phelps jacob
Country : us.
13022. Invention
Invention : bread, sliced (bread-slicing machine)
Year : 1928
Inventor : otto frederick rohwedder
Country : us.
13023. Invention
Invention : button
Year : c. 700 bc
Inventor : greeks, etruscans
Country : greece, italy.
13024. Invention
Invention : buttonhole
Year : 13th century
Inventor : -
Country : europe.
13025. Invention
Invention : calculator, electronic hand-held
Year : 1967
Inventor : jack s. kilby
Country : us.
13026. Invention
Invention : calculus
Year : 1680s
Inventor : sir isaac newton and gottfried wilhelm leibniz (invented separately)
Country : england and germany (respectively).
13027. Invention
Invention : calendar, modern (gregorian)
Year : 1582
Inventor : pope gregory xiii
Country : italy.
13028. Invention
Invention : camcorder
Year : 1982
Inventor : sony corp.
Country : japan.
13029. Invention
Invention : camera, motion picture
Year : 1891
Inventor : thomas alva edison, william k.l. dickson
Country : us.
My Account / Test History
Animal Facts
You can cut a leech in half while it is feeding and it will carry on sucking, the blood spurting out of the cut end of its body.
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