వస్తువులు – కనుగొన్న వ్యక్తులు – Inventions and Discoveries – Part(4)
Railway Engine……………………………Stephenson
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
ThimonnierShort Hand…………………………………………Pitman
Solar System……………………………….Copernicus
Steam Engine………………………………James Watt
Steam Turbine…………………………………..Parsons
Spectroscope……………………………………Bunsen
Stethoscope…………………………….Rene Laennee
Submarine……………………………..David Bushnell
Seismograph…………………………..Roberts Mallet
Sextant……………………………………………..Hadley
Steam boat…………………………………………Fulton
Submarine………………………………………Bushwell
Talkies………………………………………Lee-de-Frost
Tank……………………………………………….Swinton
Telegraphy..William F.Cooke & Charles Wheatstone
Telegraph Code…………………………………..Morse
Telephone…………………….Alexander Graham Bell
Telescope…………………………………………..Galileo
Television………………………………………J.L. Baird
Thermos flask……………………………………..Dewar
Transistor………………………Shockly and Bardeen
Typewriter………………………………………….Sholes
Theory of Evolution…………………Charles Darwin
Theory of Relativity…………………Albert Einstein
Uranium fusion………………………………Oho Hahn
Uranus (Planet)…………………….Herschel William
Vaccination………………………………………..Jenner
Vaccum Flask………………………..Sir James Dewar
Vulcanisation………………………………..Good Year
Washing Soda…………………………………..Lablanc
Wireless Communication……………..Oliver Lodge
Wireless Telegraphy…………………………Marcony
Wireless………………………………………….Marconi
X-ray………………………………………W.C. Rontgen