Now you Know

Invention : parking meter
Year : 1932
Inventor : carl c. magee
Country : us.

Invention : particle accelerator
Year : 1929
Inventor : sir john douglas cockcroft, ernest thomas sinton walton
Country : ireland/uk.

Invention : pasteurization
Year : 1864
Inventor : louis pasteur
Country : france.

Invention : pen, ballpoint
Year : 1938
Inventor : lazlo biro
Country : hungary.

Invention : pencil
Year : 1565
Inventor : conrad gesner
Country : switzerland.

Invention : periodic table
Year : 1871
Inventor : dmitry ivanovich mendeleyev
Country : russia.

Invention : personal watercraft, motorized
Year : 1968
Inventor : bombardier, inc.
Country : canada.

Invention : petroleum jelly
Year : 1870s
Inventor : robert chesebrough
Country : us.

Invention : phonograph
Year : 1877
Inventor : thomas alva edison
Country : us.

Invention : photocopying (xerography)
Year : 1937
Inventor : chester f. carlson
Country : us.

Invention : photography
Year : 1837
Inventor : louis-jacques-mande daguerre
Country : france.

Invention : photography, instant
Year : 1947
Inventor : edwin herbert land
Country : us.

Invention : play-doh
Year : 1956
Inventor : noah w. & joseph s. mcvicker
Country : us.

Invention : plow, steel
Year : 1836
Inventor : john deere
Country : us.

Invention : pocket watch
Year : c. 1500
Inventor : peter henlein
Country : germany.

Invention : polyethylene
Year : 1935
Inventor : eric fawcett, reginald gibson
Country : uk.

Invention : polygraph (lie detector)
Year : 1921
Inventor : john a. larson
Country : us.

Invention : polyvinyl chloride (pvc)
Year : 1872
Inventor : eugen baumann
Country : germany.

Invention : post-it notes
Year : mid-1970s
Inventor : arthur fry (3m)
Country : us.

Invention : potato chips
Year : 1853
Inventor : george crum
Country : us.

Book
Book : oru desathinte katha
Author : s.k. pottekatt. .. More >>