Now you Know

Invention : sonar
Year : 1915
Inventor : paul langevin
Country : france.

Invention : stamps, postage
Year : 1840
Inventor : sir rowland hill
Country : uk.

Invention : stapler
Year : 1866
Inventor : george w. mcgill
Country : us.

Invention : steamboat, successful
Year : 1807
Inventor : robert fulton
Country : us.

Invention : steel, mass-production
Year : 1856
Inventor : henry bessemer
Country : uk.

Invention : steel, stainless
Year : 1914
Inventor : harry brearley
Country : uk.

Invention : stereo, personal
Year : 1979
Inventor : sony corp.
Country : japan.

Invention : stereophonic sound recording
Year : 1931
Inventor : alan dower blumlein
Country : uk.

Invention : stethoscope
Year : 1819
Inventor : rene-theophile-hyacinthe laennec
Country : france.

Invention : stock ticker
Year : 1867
Inventor : edward a. calahan
Country : us.

Invention : stove, electric
Year : 1896
Inventor : william hadaway
Country : us.

Invention : stove, gas
Year : 1826
Inventor : james sharp
Country : uk.

Invention : straw, drinking
Year : 1888
Inventor : marvin stone
Country : us.

Invention : submarine
Year : 1620
Inventor : cornelis drebbel
Country : the netherlands.

Invention : sunglasses
Year : 1752
Inventor : james ayscough
Country : uk.

Invention : sunscreen
Year : 1944
Inventor : benjamin green
Country : us.

Invention : supermarket
Year : 1930
Inventor : michael cullen
Country : us.

Invention : synthesizer, music
Year : 1955
Inventor : harry olson, herbert belar
Country : us.

Invention : synthetic skin
Year : 1981
Inventor : ioannis v. yannas, john f. burke
Country : us.

Invention : tampon, cotton
Year : 1931
Inventor : earle cleveland haas
Country : us.

Fact
The best time for a person to buy shoes is in the afternoon. This is because the foot tends to swell a bit around this time .. More >>