- Alpha and Beta particles-Ernest Rutherford (Britain)
- Aniline: dyes-Ronald Hoffman 9U.S.A.)-185l
- Atom Bomb-Otto Hahn (Uranium fission)-1941
- Atomic Numbers-Mosley-1913
- Atomic Structure-Bohr and Rutherford-1913
- Adding Machine-Wilhelm Schickard (Germany)-1623
- Airship (Non-rigid) Henri Giffard (France)-1852
- Airship (rigid) G.F. Von Zeppelin (Gel’rr1any)-1900
- Artificial Heart-Willem Kolff Qketherlandsl-1957
- Atomic Bomb- J. Robert Oppenheimer (U.S.A.) -1945
- Automatic Riffle- Johan browning (U.S.A.)-1918
- Breaking up the nucleus of an atom-Rutherford-1918
- Bakelite-Leo H. Baekeland (Be1gium)-1907
- Ballistic Missile-Wernher Von Braun (Gerrrla11y)-1944
- Ball Point Pen- John J. Loud (U.S.A.)-1888
- Battery (Electric) -Alessandro Volta (1taly) – 1800
- Bifocal Lens-Benjamin Franklin (U.S.A.)-1780
- Bolt action rifle- P.Von Mauser (Germany)-1889
- Bunsen Burner- R.Willhelm Von Bunsen (Germany)-1855
- Burglar Alarm Edwin- T. Holmes (U.S.A.)-1858
- Circumference of earth- Jean Piccard and J.F. Hayford
- Cosmic rays-R.A. Millikan-1910
- Crescograph- J.C. Bose (India)
- Crystal Dynamics-Dr. C.V.Raman (lndia)-1928
- Car (Steam)-Nicolas Cugnot (France)-1769
- Car (Petrol)-Karl Benz (Gel-many) -1888
- Carburettor.-Gottlieb Daimler (Germany)-l 276
- Carpet Sweeper-Melville R.Bissell (U.S.A.)-1876
- Cash Register-lames Ritty (U.S.A.)-1879
- Cellophane-Dr. J. Brandenberger (Switzerland) – 1908
- Celluloid-Alexander Parkes (Britain)-1861
- Cement (Portland) -Joseph Aspdin (Britain) – 1824
- Chronometer-John Harrison (Britain)-1735
- Cinema- Nicolas & Jean Lumiere (France)-1895
- Clock (Mechanical)-1. Hsing &Liang Ling-Tsan-(china)-1725
- Clock (Pendulum) -Christian Huygens (Netherlands)-1656
- Deuterium (Heavy hydrogen)-H.C.Urey-1932
- Dynamite-Alfred Nobel-1862
- Dental Plate-Anthony A. Plantson (U.S.A.)-1817
- Dental Plate (Rubber) – Charles Goodyear (U.S.A.)-l 855
- Diesel Engine- Rudolf Diesel (Germany)-1895
- Disc Brake- Dr. F. Manchester (Britain) – 1902
- Electrons- J. J. Thomson-1897
- Electric battery, Methane gas- Alessandro Volta (ltaly)-1800
- Explorer (Artificial Earth Satellite) -American Scientists-1958
- Electric Blanket-Exhibited at the Vienna Exhibition -1883
- Electric Flat Iron- H.W. Seeley (U.S.A.)-1882
- Electric Furnace- William Siemens (Britain)-186l
- Electric Lamp- Thomas Alva Edison (U.S.A.)-1879
- Electric Motor (DC) – Zenobe Gramme (Belgium) -1873
- Electric Motor (AC) – Nikola Tesla (U.S.A.)-1888
- Electromagnet- William Sturgeon (Britain)- l 824
- Electroplating Luigi Brugnatelli (1taly)-1805
- Electronic Computer-Dr. Alan M. Turing (Britain)-1824
- Facsimile Machine-Alexander Bain (Britain) -l 843
- Film (Moving outlines) -Louis Prince (France)-1885
- Film (Talking)-J.Engl, J.Mussolle & H. Vogt. (Germany) 1922
- Film (Musical Soundly-Dr. Le de Forest (U.S.A.)-1923
- Frequency Modulation (FM)-E. H. Armstrong (U.S.A.)-1933
- Gas Lighting-William Murdock (Britain)-l 792
- Geometry-Euclid
- Galvanometer-Andre Marie Ampere (Franc) – l 834
- Glass (Stained)-Augsburg (Germany)-C-1080
- Glass Ware-Egypt & Mesopotamia -C-1500 B.C.
- Glider-sir George Cayley (Britain)-1853
- Guided Missile-Wernher Von Braun (Germany)-1942
- Gyro-compass-Elmer A. Sperry (U.S.A.)-19l 1
- Hydrogen & Argon-Cavendish (Britain)-1766
- Holography.-Denis Gaston (Britain)-1947
- Hydrogen Bomb-Edward Teller (U.S.A.)-1952
- Induction of electric current- Michael Faraday-l 841
- Iron lung (Drinker’s Chamber) -Dr. Philip Drinker
- Incandescent Bulb-Thomas Alva Edison-1860
- Intelligence Tests-Binet-1950
- Iron Working (Carbonized) – (Cyprus & N. Palestine)-C-1200 B.C.
- Jet Engine-sir Frank Whittle (Britain)-1937
- Kodak camera-George Eastman (U.S.A.)-l 888
- Laughing gas (Nitrous oxide) – J. Priestley
- Lightning conductor-Benjamin Franklin (U.S.A.)-1752
- Logarithms-John Napier-1614
- Launderette- J. F. Cantrell (U.S.A.)-1934
- Linoleum-Frederick Walton (Britain)-1860
- Locomotive-Richard Trevithick (Britain)-1804
- Loom, Power-E. Cartwright (Britain)-1785
- Loudspeaker-Horace Short (Britain)-1900
- Measurement of electrical energy -J. P. Joules (Britain)
- Magnetic Recording Tape Maps – Fritz Pfleumer (Germany)-1928
- Maps-Sumeria (Clay-tablets of river Euphrates)-C-3800 B.C.
- Margarine- Hippolyte M. Mouries (France)-1869
- Match, safety-John Walker (Britain)-1826
- Microphone-Alexander Graham Bell (U.S.A.)-1876
- Micro – Processor- Robert Noyces & Gordon Moore (U.S.A.) 1971
- Microwave Oven- Percy L. Spencer (U.S.A.) – 1947
- Motor Cycle-G.Daimler of Canadian (Germany)-1885
- Movie Projector-Thomas Edison (U.S.A.)-1893
- Neutron blames Chadwick (England)-1932
- Noble gases-William Ramsay (Scotland)-1894
- Nylon-Dr. Wallace H. Caruthers (U.S.A.)-1937
- Neon Lamp-Georges Claude (France)-1910
- Neutron Bomb-Samuel Cohen (U.S.A.)-1958
- Oxygen-l. Priestley- 1774
- Optical Fibre-Narinder Kapany (Germany) – 1955
- Periodic Law-Mlendeleev-1869
- Psycho-analysis-Dr. Sigmund Freud (Austria) -1895
- Printing for the blind-Louis Braille
- Photography (on Metal)-J.N. Niepce-1826
- Photography (on Paper)-W. H. Fox Talbot-1835
- Photography (on Film) George Eastman (U.S.A.)-1888
- Principle of lever-Archimedes paper-china- A.D. 105
- Parchment- Egypt- C-1300 B.C.
- Parking Meter.-Carlton C.Magee (U.S.A.)-1935
- Parallel Computing-Seymour Cray & David Gelerntes (U.S.A) 1979
- Pasteurization-Louis Pasteur (France) 1867
- Porcelain-Earliest report fromChina-851
- Potter’s Wheel – Asia Minor -C-6500 B.C.
- Printing (rotary) – Richard Hoe (U.S.A.)-1846
- Printing (Web- Fed rotary)- William Bullock (U.S.A.)-1865
- Propeller (Ship) – Francis Smith (Britain)-1837
- Quantitative synthesis of water- Lavoisier (France)-1783
- Radio-activity of Uranium-Henry Becquerel – 1896
- Radium-Marie Curie-1899
- Radio Telegraphy-Dr. Mahlon Loomis (U.S.A.)-1864
- Radio Telegraphy (Trans Atlantic) -G. Marconi (ltaly)-1901
- Rayon-sir Joseph Swan (Britain)-1883
- Razor (electric)-Col Jacab Schick (U.S.A.)-1931
- Record (long playing)-Dr. Peter Goldmark (U.S.A.)-1948
- Refrigerator–lames Harrison, Alexander Catlin (U.S.A.)-1850
- Rubber (latex Foam)-Dunlop Rubber Co. (Britain) – 1928
- Rubber (Tyres)-Thomas Hancock (Britain)-1846.
- Rubber (Vulcanised) -Charles Goodyear (U.S.A.)-1841
- Rubber (Water proof) -Charles Macintosh (Britain)-1823
- Rubik Cube-prof. Emo Rubik (Hungary)-1975
- Sextant-John Hadley-1913
- Sputnik (Baby Moon)-Russian Scientists-1957
- Steel – Bessemer
- Synthesis of Ammonia from nitrogen and hydrogen-Haber, Fritz- 1885
- Safety Pin-Walter Hunt (U.S.A.) -1849
- Scotch Tape – Richard Drew (U.S.A.)-1930
- Ship (Steam)-J .C. Perier (France)-1775
- Ship (turbine) Hon.- Sir C. Parsons (Britain)-1894
- Silk Manufacture.-China -C-50 B.C.
- Skyscraper – W. Le Baron Jenny (U.S.A.)-1882
- Slide Rule-William Oughtred (Britain) -162l
- Spectacles (Convex) – Venice (lta1y)-1689
- Spinning Frame- Sir Richard Arkwright (Britain)-1769
- Steam Engine-Thomas Savery (Britain)-1698
- Steam Engine (Piston)- Thomas Newcomen (Britain)-1612
- Steam Engine (Condenser) – James Watt (Britain)-1765
- Steel (Stainless) – Harry Bearley (Britain)-1916
- Super Computer – J. H. Van Tassel (U.S.A.)-1976
- Thermionic Valve- Sir John A. Fleming
- Telegraph code- Samuel F. B. Morse-1837
- T.N.T. (High explosive)-Will Brand
- Telegraph- M. Lammond (France) – 1687
- Telephone (lmperfect)-Antonio Meucci (Italy)-1849
- Television (Electronic)-P.T. Farnsworth (U.S.A.)-1927
- Telylene- J. R. Whinfield, J.T. Dickson (Britain)- 194l
- Vitamins- F. G. Hopkins-1912
- Vitamin D- Mc Collum) 1925
- Velocity of light- Fizeau- 1902
- Video Tape- Charles Ginsberg (U.S.A.)-1956
- Velcro (hook and loop Fastener) -G. de Mestral (Switzerland) – 1948
- Wireless telegraphy—G. Marconi -1896
- Watch – Bartholomew Manfredi (Ita1y)-1462
- Welder (electric) – Elisha Thomson (U.S.A.)-1877
- Windmill – Persian Corn Grinding -C-600
- Writing – Sumerian Civilization -C-3500 B.C.
- X-Ray – W. K. Roentgen (Germany)-1895
- Zeta (Zero Energy Thermo- nuclear Assembly) – British Scientists under Dr. Thoreman-1958
- Zip Fastener – W. L. Judson (U.S.A.)-1891
