HS Science – Inventions and Inventors
Shiksha Mein Sahayog - Hamara Sankalp HS Science – 2 Inventions and Inventors HAMARA SANKALP - SHIKSHA MEIN SAHAYOG Inventions and Inventors S.No Invention Inventor S.No Invention Inventor 1 Telephone Alexander Graham Bell 21 BarCode Norman Joseph Woodland and Bernard Silver 2 Electric Bulb Thomas Edison 22 Magnetic Resonance Imaging Raymond Damadian 3 Mobile Phone Martin Cooper 23 Liquid Crystal Display (LCD) George H. Heilmeier 4 Ceiling Fan Philip Diehl 24 First Touchscreen E.A Johnson 5 3D Printing Chuck Hill 25 Linux Operating System Linus Torvalds 6 Printing Machine ...