| Adding Machine | Blaise Pascal & William Burroughs |
| Air Conditioning | Carrier |
| Air Plane (Jet Engine) | Whittle |
| Air-brake | George Westinghouse |
| Airplane with motor | Orville and Wright |
| Airship | Giffard |
| Airship (Non-rigid) | Zeppelin |
| Aniline Dyes | Hoffman |
| Animal Classification | Aristotle (Father of Zoology) |
| Anti-polio Vaccine | Jonas E.Salk |
| Antiseptic Surgery | Joseph Lister |
| Arc Lamp | C.F.Brush |
| Artificial heart | Michael de Baxey |
| Art of Printing | Guttenburg |
| Atomic Physics | Ernest Rutherford |
| Atomic Theory | John Dalton |
| Atom-breaking up the nucleus | |
| Atomic Numbers | Moseley |
| Atomic Structure | Bohr & Rutherford |
| Atomic bomb | Otto Hahn |
| Automobile (Self Starter) | |
| Automobile (gasoline) | Daimler |
| Automobile (gears) | Benz |
| Automobile (magneto) | Daimler |
| Automobile (Steam) | Nicolas Cugnot |
| Avogradra’s Hypothesis | Avogadro |
| Ayurveda | Atreya |
| Bacteria | Leeuwenhock |
| Ball Point Pen | John Loud |
| Balloon | Montgolfier |
| Barometer | Torricelli |
| Battery & Current Electricity | |
| Beriberi (cause) | Eijkman |
| Bicycle | Macmillan |
| Bicycle tyre | Dunlop |
| Bifocal lens | |
| Blood Circulation | |
| Blood Transfusion | Landsteneir |
| Blood grouping | Dr.Costella andDr.Moss |
| Brownian Movements | Robert Brown |
| Burglar Alarm | Edwin T.Holmes |
| Camera | Zeiss |
| Carburettor | Daimler |
| Cash Register | James Kitty |
| Cells in the plants | Robert Hooke |
| Cell Theory | Schleiden & Schwann |
| Cement | Joseph Aspdin |
| | Leonardoda Vinci |
| Chloroform | James Young Simpson |
| Cholera bacillus | Robert Koch |
| Chronometer | John Harrison |
| Cinema | Nicolas Lumiere & Edison |
| Cinematography | Thomas Edison |
| Clock Pendulum | Huygens |
| Computer (Original Model) | Charles Babbage |
| Computer (electronic) | J.G.Brainerd ,J.P.Eckert & J.W.Manchly |
| Cosmic Rays | R.A.Millikan |
| Crystal Dynamics | C.V.Raman |
| D.D.T. | D. Paul Muller |
| DNA (model) | Watson and Crick |
| Diesel Oil Engine | Rudolf Diesel |
| Disc Brake | Lanchester |
| Dynamite | Alfred Nobel |
| Dynamo | Michael Faraday |
| Electric Attraction | Coulomb |
| Electric | |
| Electric Current, Induction of | Michael Faraday |
| Electric Energy | Joule, James |
| Electric Lamp | |
| Electric Motor (DC) | Zenobe Gramme |
| Electric Motor (AC) | Nikola Tesla |
| Electrical Resistance | Ohm |
| Electricity, Current | |
| Electrons | J.J.Thomson |
| Elevator brake (lift) | Otis |
| Evolution, Theory | Charles Darwin |
| Film (Musical) | Lee de |
| Film (talking) | Warner Bros. |
| Fountain Pen | Waterman |
| Four Stroke Engine | Nikolaus Lotto |
| Flying Shuttle | John Kay |
| Galvanometer | Sweigger |
| Gas Engine | Diamler |
| Gas Lighting | William Murdock |
| Geiger counter | Geiger |
| Geometry | |
| Genetic Code (deciphering) | Hargobind Khorana |
| Gramophone | Thomas Edison |
| Gravitation, Laws of | |
| Gunpowder | Roger Bacon |
| Heavy Hydrogen | H.C.Urey |
| Helicopter | Broquet |
| Helium | Janssen & Lockyer |
| Homoeopathy | Hahnemann |
| Hydrogen | Henry Cavendish |
| Inert Gases (Argon, Neon, Helium etc) | Ramsay |
| Insulin | F.Banting |
| Jet Propulsion | Frank Whittle |
| Jet Engine | Frank Whittle |
| Kala-a-zar Fever | U.N.Bramachari |
| Kidney Machine | Kolf |
| Laughing Gas | Priestley |
| Laser | Charles Townes |
| Lever, Principle of | Archimedes |
| Lift (power elevator) | Otis |
| Lightning Conductor | Benjamin Franklin |
| Logarithms | John Napier |
| Locomotive | Richard Travithick |
| Malaria Parasite | Dr.Ronald Ross |
| Machine gun | James Puckle |
| Malaria germs | Laveran |
| Malaria Parasite | Dr.Ronald Ross |
| Match (safety) | J.E.Landstorm |
| Mathematics ( | Ramanujan.S. |
| Microphone | Berliner |
| Microscope | Jansen (improved by Galileo) |
| Microscope (electron) | Vladimir KosmeSworykin |
| Motor Car | |
| Motion, Law of | |
| Motor cycle | Edward Butler |
| Motor Scooter | Greville Bradshaw |
| Mitochondria | C.Benda |
| Natural Selection, Laws of | |
| Neon-gas | W.Ramsay |
| Neon Lamp | George Clande |
| Neutron | Chadwick |
| Nuclear Fission | Otto Hahn |
| Nuclear Physics | John Crockfort |
| Nylon | W.Carothers |
| Origin of Life (artificial) | |
| Oxygen | J.B.Priestley |
| Paints | Shalimar |
| Parachute | Andre-Jacques |
| Penicillin | Alexander Fleming |
| Periodic Law | Mendeleev |
| Phonograph | |
| Photography | L.Daguerre |
| Photography (Coloured) | Gabriel Lippman |
| Pneumatic | Dunlop |
| Poliomyelitis (vaccine) | Jonas Salk |
| Polythene | Fawcett |
| Pressure Cooker | Dennis Papin Robert Boyle |
| Printing Press | Caxton |
| Printing for the Blind | Louis Braille |
| Quantum Theory | Max Planck |
| Radar | Robert Watson Watt |
| Radio Telephone | Lee De |
| 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 |
| Safety Lamp | Humphrey Davy |
| Safety Matches | J.E.Landstorm |
| Safety Pin | William Hunt |
| Safety Razor | Gillette |
| Salk Vaccine (Anti Polio) | Dr.Jonas E.Salk |
| Seismograph | Robert Mallet |
| Sewing Machine | Issac Singer |
| Ship (Steam) | J.C.Pierier |
| Ship (turbine) | Charles Parsons |
| Shorthand | Pitman |
क्या आपको हमारा किया जा रहा प्रयास अच्छा लगा तो जरूर बताइए.