INVENTIONS AND DISCOVERIES - 7

Rayond ………Sir Joseph Swan
Radio-activity of Uranium ……Henry Beccquerel
Raman effect …………… E.C Raman
Radium ……… Madame Curie
Railway Engine ……… Stepheson
Radio transmitter …… Alexanderson
Rare Gas ………… Cavandish
Replacing human heart ……Christian Barnard
Revolver ……………… Colt
Quantum Theory ……… Max Plank
Refrigerator …………… James Harrison
Safety Lamp ……………Humphry Davy
Safety Match …………… Land Strom
Safety Pin …………………William Hunt
Safety Razor ……… Gillette
Sewing Machine …. Barthelling Thimonnier
Short Hand …… Pitman
Solar System …… Copernicus
Steam Engine ……James Watt
Steam Turbine ……. Parsons
Spectroscope …… Bunsen
Stethoscope…….Rene Laennee
Submarine……… David Bushnell
Seismograph……Roberts Mallet
Sexta n t ……...... Hadley
Steam boat …… Fulton
Submarine ……… Bushwell