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Inventions and Scientists
Inventions |
Famous Scientists |
Radar | Robert Watson Watt |
Radio Telephone | Lee De Forest |
Radio Transmitter | Alexanderson |
Radio signals | G.Marconi |
Railway Engine | Stephenson |
Raman Effect | C.V.Raman |
Razor (Safety) | Gillette |
Razor (Electric) | Jacob Schick |
Rayon | Joseph Swann |
Refrigerator | Harrison & Catlin |
Relativity, theory of | A.Einstein |
Replacing human heart | Christian Barnard |
Revolver | Samuel Colt |
Rh-factor | Karl Landsteiner |
Rubber (latex foam) | Dunlop Co. |
Rubber (tyres) | Thomas Hancock |
Rubber (vulcanised) | Goodyear |
Rubber (waterproof) | Macintosh |