Now you Know

Invention : prozac
Year : 1972
Inventor : ray w. fuller, bryan b. molloy, david t. wong
Country : us.

Invention : radar
Year : c. 1904
Inventor : christian hulsmeyer
Country : germany.

Invention : radio
Year : 1896
Inventor : guglielmo marconi
Country : italy.

Invention : radio, car
Year : early 1920s
Inventor : william p. lear
Country : us.

Invention : rayon
Year : 1884
Inventor : louis-marie-hilaire bernigaud, count of chardonnet
Country : france.

Invention : razor, electric
Year : 1928
Inventor : jacob schick
Country : us.

Invention : razor, safety
Year : c. 1900
Inventor : king camp gillette
Country : us.

Invention : reaper, mechanical
Year : 1831
Inventor : cyrus hall mccormick
Country : us.

Invention : record, long-playing (lp)
Year : 1948
Inventor : peter carl goldmark
Country : us.

Invention : refrigerator
Year : 1842
Inventor : john gorrie
Country : us.

Invention : remote control, television
Year : 1950
Inventor : robert adler
Country : us.

Invention : respirator
Year : c. 1955
Inventor : forrest m. bird
Country : us.

Invention : revolver
Year : 1835-36
Inventor : samuel colt
Country : us.

Invention : richter scale
Year : 1935
Inventor : charles francis richter, beno gutenberg
Country : us.

Invention : rifle, assault
Year : 1944
Inventor : hugo schmeisser
Country : germany.

Invention : roller coaster
Year : 1884
Inventor : lemarcus a. thompson
Country : us.

Invention : rubber, vulcanized
Year : 1839
Inventor : charles goodyear
Country : us.

Invention : rubber band
Year : 1845
Inventor : stephen perry
Country : uk.

Invention : saccharin
Year : 1879
Inventor : ira remsen, constantin fahlberg
Country : us, germany.

Invention : saddle (riding)
Year : c. 200 bc
Inventor : -
Country : china.

Fact
The smile is the most frequently used facial expression. A smile can use anywhere from a pair of 5 to 53 facial muscles .. More >>