Discoveriws

North Pole                                 Robert Peary

South Pole                                 Amundsen

Solar System                              Copernicus

Law of Planetary Motion            Kepler

Typewriter                                 Sholes

Safety Razor                              Gillete

Printing Press                             Caxton

Television                                   J.L. Baird

Tanks                                        Swinton

Microscope                               Jansen

Revolver                                    Colt

Seismograph                              Robert Mallet

Neon Gas                                  W. Ramsay

Steel smelting Process                Henry Bessemer

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Matter Provide By - Sachin Sharma
क्या आपको यह लेख पसंद आया? अगर हां, तो ..इस वेबसाइट के प्रशंसक बनिए ना ! इस वेबसाइट  की हर नई जानकारी अपने मेल-बॉक्स में मुफ्त मंगाइए!!

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