Now you Know

Invention : laser
Year : 1958
Inventor : gordon gould and charles hard townes, arthur l. schawlow (invented separately)
Country : us.

Invention : laundromat
Year : 1934
Inventor : j.f. cantrell
Country : us.

Invention : lawn mower, gasoline-powered
Year : c. 1940
Inventor : leonard goodall
Country : us.

Invention : lego
Year : late 1940s
Inventor : ole kirk christiansen
Country : denmark.

Invention : light bulb, incandescent
Year : 1879
Inventor : thomas alva edison
Country : us.

Invention : light bulb, fluorescent
Year : 1934
Inventor : arthur compton
Country : us.

Invention : light-emitting diode (led)
Year : 1962
Inventor : nick holonyak, jr.
Country : us.

Invention : linoleum
Year : 1860
Inventor : frederick walton
Country : uk.

Invention : lipstick, tube
Year : 1915
Inventor : maurice levy
Country : us.

Invention : liquid crystal display (lcd)
Year : 1963
Inventor : george heilmeier
Country : us.

Invention : lock and key
Year : c. 2000 bc
Inventor : assyrians
Country : mesopotamia.

Invention : locomotive
Year : 1829
Inventor : george stephenson
Country : england.

Invention : longbow
Year : c. 1000
Inventor : -
Country : wales.

Invention : loudspeaker
Year : 1924
Inventor : chester w. rice, edward w. kellogg
Country : us.

Invention : magnetic resonance imaging (mri)
Year : early 1970s
Inventor : raymond damadian, paul lauterbur
Country : us.

Invention : margarine
Year : 1869
Inventor : hippolyte mege-mouries
Country : france.

Invention : matches, friction
Year : 1827
Inventor : john walker
Country : england.

Invention : metric system of measurement
Year : 1795
Inventor : french academy of sciences
Country : france.

Invention : microphone
Year : 1878
Inventor : david e. hughes
Country : uk/us.

Invention : microscope, compound optical
Year : c. 1600
Inventor : hans & zacharias jansen
Country : the netherlands.

Fact
Over 250 million Slinky toys have been sold since its debut in 1946 .. More >>