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[rajib]

Automatic Calculator---Wilhelm Schickard
Air Conditioner---Willis Carrier
Anemometer---Leon Battista Alberti
Animation---J. Stuart Blackton
Atom Bomb---Julius Robert Oppenheimer
Aspirin---Dr. Felix Hoffman
Airplane---Wilber and Orville Wright
Adhesive tape---Richard G. Drew
Bifocal Lens---Benjamin Franklin
Barometer---Evangelista Torricelli
Barbed Wire---Joseph F. Glidden
Blood Group---Karl Lansdsteiner
Ball Point Pen---John Loud
Bicycle---Tyres John Boyd Dunlop
Pedal Driven Bicycle---Kirkpatrick Macmillan
Celluloid---Alexander Parkes
Chloroform--- Sir James Young Simpson
Cine Camera---Wm. Friese-Greene
Circulation of blood---William Harvey
Clock Mechanical--- Hsing and Ling-Tsan
Diesel Engine---Rudolf Diesel
Electric stove/cooker---William S. Hadaway
Electroscope---William Gilbert
Electric Fan---Schuyler Wheeler
Electric Battery---Volta