Air Brake------------------------George Westinghouse
Aniline Dyes---------------------Hoffman
Antiseptic Surgery---------------Lord Joseph Lister
Archimedean Screw----------------Archimedies
Avogadro's Hypothesis------------Avogadro
Atomic Number--------------------Mosley
Atomic Theory--------------------Dalton
Atomic Structure-----------------Bohr and Rutherford
Automobile-----------------------Daimler
Balloon--------------------------Montgolfier
Barometer------------------------Torricelli
Beri – Beri----------------------Eijkman
Bicycle--------------------------Macmillian
Blood Circulation----------------Harvey
Boson----------------------------S.N.Bose
Boyle's law----------------------Boyle
Braille--------------------------Louis Braille
Breaking up the Nucleus of an atom--Rutherford
Celluloid------------------------Parkes
Chloroform-------James Harrison and James Young Simpson
Cholera Bacillus------------------Robert Koch
Cinematography--------------------Thomas Alva Edison
Coloured Photography--------------Lippman
Cosmic Rays-----------------------R.A.Millikan
Crescograph-----------------------J.C.Bose
Crystal Dynamics------------------C.V.Raman
Cyclotron-------------------------Lawrence
D.D.T.----------------------------Dr.Paul Muller
Deuterium (Heavy Water)-----------H.C.Urey
Diesel Oil Engine-----------------Rudolf Diesel
Discovery of North Pole-----------Robert Peary (1909)
Discovery of South Pole-----------Amundson (1912)
Discovery of West Indies----------Columbus (1492)
Discovery of Solar System---------Copernicus (1540)
Discovery of Laws of Planetary Motion----Kepler
Discovery of Specific Gravity-----Archimedes
Drinker's Chamber of Iron Lung----Dr.Philip Drinker
Dynamite--------------------------Alfred Nobel
Dynamo----------------------------Faraday
Dynamical theory of Heat----------Lord Kelvin
Deciphering the genetic code------Dr.Hargobiad Khorana
Discovery of Electrons------------J.J.Thomson
Malarial Parasite-----------------Ronald Ross
Mechanical Equivalent of Heat-----Joules
Meson Hideki--------------------Yakawa
Microphone------------------------Berliner
Microscope------------------------Janes
Montessori Metho------------------Maria Montessori
Molecular Scattering of light in fluid-------Ramanathan
Neon Gas--------------------------Ramsay, Travers
Neutron---------------------------Chadwick
Nuclear Fission------------------Otto Hahn, Bohr and Fermi
Nylon Plastic--------------------Carothers
Origin of Species----------------Charles Darwin
Vitamins-------------------------Funk
Washing--------------------------Soda Lablanc
Wireless Communication-----------Oliver Lodge
Wireless Telegraphy--------------Marcony
X – Rays-------------------------Roentgen
Zip Fastener---------------------W.L.Judson