Talkies ……. Le-de-Frost Tank …….. Swinton Telegraphy … Willilam F.Colle & Charles Wheatstone Telegraph Code …. Morse Telephone ...

Rayond ………Sir Joseph Swan Radio-activity of Uranium ……Henry Beccquerel Raman effect …………… E.C Raman Radium ……… Madame Curie Railway...

Neon Gas …………..Ramsy, travers Neutron ………… Chadwick Nuclear Fission … Otto Hahn, Bohr and Fermi Nyclon Plastic ……...Carothers Oxyge...

Law of Gravitation …………. Issac Newton Law of Heredity ………….. G.Mendal Laser ………………… Theodore Mainman Lightning Conductor …..Benjamin...

Hydrogen ………………………… Cavendish Helicopter …………..………….. Broquett Helium Gas ……………………… Lockyer Homoeopathy ……………………Hahnemann Hovercraf...

Electric Battery ………………………... Volta Electric Lamp ……………………... Edison Electricity …………………………... Faraday Electron Theory ………………………..…....

Computer ……………………..... Charles Babbage Chloroform …………………………. James Young Simpson Cinema …………………….…… Lumiere Brothers Cinema Project...

Air Brake ………………………….… George Westinghouse Adding Machine ....…………………………… Balise Pascal Aeroplane ……….………………………….. Wright Brothers A...