Now you Know

Invention : traffic lights, automatic
Year : 1923
Inventor : garrett a. morgan
Country : us.

Invention : transistor
Year : 1947
Inventor : john bardeen, walter h. brattain, william b. shockley
Country : us.

Invention : typewriter
Year : 1868
Inventor : christopher latham sholes
Country : us.

Invention : ultrasound imaging, obstetric
Year : 1958
Inventor : ian donald
Country : uk.

Invention : vaccination
Year : 1796
Inventor : edward jenner
Country : england.

Invention : vacuum cleaner, electric
Year : 1901
Inventor : herbert cecil booth
Country : uk.

Invention : velcro
Year : 1948
Inventor : george de mestral
Country : switzerland.

Invention : vending machine
Year : c. 100-200 bc
Inventor : -
Country : egypt.

Invention : viagra
Year : 1997
Inventor : pfizer inc.
Country : us.

Invention : video games
Year : 1972
Inventor : nolan bushnell
Country : us.

Invention : videocassette recorder
Year : 1969
Inventor : sony corp.
Country : japan.

Invention : videotape
Year : 1950s
Inventor : charles ginsburg
Country : us.

Invention : virtual reality
Year : 1989
Inventor : jaron lanier
Country : us.

Invention : vision correction, laser
Year : 1987
Inventor : stephen trokel
Country : us.

Invention : washing machine, electric
Year : 1907
Inventor : alva j. fisher
Country : us.

Invention : wheel
Year : about 3500 bc
Inventor : proto-aryan people or sumerians
Country : russia/kazakhstan or mesopotamia.

Invention : wheelbarrow
Year : 1st century bc
Inventor : -
Country : china.

Invention : wheelchair
Year : 1590s
Inventor : -
Country : spain.

Invention : windmill
Year : 644
Inventor : -
Country : persia.

Invention : wine
Year : before 4000 bc
Inventor : -
Country : middle east.

Fact
By partially filling saucers with vinegar and distributing the saucers around a room, you can eliminate odors .. More >>