Calculator

The first mechanical calculator was invented by French inventor, Blaise Pascal In 1642.

Air Conditioner

•Willis Carrier

• Nationality - USA

Atom Bomb

• Julius Robert Oppenheimer

• Nationality - USA

Air Plane

•Wright brothers

•Wilber and Orville Wright

• Nationality - USA

Blood Group

• Karl Lansdsteiner

• Nationality - Austria

Ballpoint pen

• John J. Loud

• The metal commonly used is steel, brass, or tungsten carbide.

• Nationality - USA

Bicycle

• Kirkpatrick Macmillan

• Nationality – Scotland (United Kingdom)

Diesel Engine

• Rudolf Diesel

• Nationality - Germany

Structure of DNA

• American biologist James Watson and English physicist Francis Crick

• DNA 1st discovered by Miescher

Discovery of the malarial parasite in the gastrointestinal tract of a mosquito in 1897 proved that malaria was transmitted by mosquitoes

• Ronald Ross was born in Almora, India

• Nationality – British

• French scientist Laveran discovered the malaria parasite in 1880

Dynamite

• Alfred B. Nobel

• Nationality - Swedish

Electric Battery

• Antonio Volta

• Nationality - Italian

Hydrogen

• Henry Cavendish

• Nationality - British

Elevator

• Elisha Otis

• Nationality - American

Lewis Waterman

• Fountain Pen

• Nationality - USA

Insulin

• Frederick Banting

• Nationality - Canada

Radioactivity

• Henri Becquerel

• Nationality - French

Microscope

• Zacharis Janssen

• Nationality - Dutch

Oxygen

• Joseph Priestley

• Nationality - English

Jonas Edward Salk

• Polio Vaccine

• Nationality - USA

Dmitri Mendeleev

• Periodic Table

• Nationality - Russian

Penicillin

• Alexander Fleming

• Nationality - Scottish

Radium, Polonium

•Marie & Pierre Curie

• Nationality Pierre Curie – French

• Nationality Marie Curie – Poland

Rubber (Vulcanised)

• Charles Goodyear

• Nationality - USA

Radio

• Guglielmo Marconi

• Nationality - Italy

Sewing machine

• Barthélemy Thimonnier

• Nationality - France

Graham Bell

• Telephone

• Nationality - Scottish

X-ray

•Wilhelm Conrad Roentgen

• Nationality - German

Computer

• Charles Babbage

• Nationality - English

Television

• John Logie Baird

• Nationality – United Kingdom

Light Bulb

• THOMAS EDISON

• Nationality - USA

Vaccine

• Edward Jenner

• Nationality – United Kingdom

Electron

• J.J. Thomson

• Nationality - British

Proton

• Ernest Rutherford

• Nationality - British

Neutron

• James Chadwick

• Nationality - British

Electric Iron

• Henry W. Seeley

• Nationality - USA

Safety Pin

•Walter Hunt

• Nationality - USA

Telescope

• Hans Lippershey

• Nationality - Dutch

Theory of Evolution

• Charles Darwin

• Nationality - England

Stainless Steel

• Harry Brearley

• Nationality – United Kingdom

Pixel

• Russell Kirsch

• Nationality - USA

Computer Mouse

• Douglas Engelbart & Bill English

• Nationality - USA

Logarithms & Decimal Point

• John Napier

• Nationality - Scotland

Fermentation (Sugar to Alcohol),Rabies and Anthrax Vaccines

• Louis Pasteur

• Nationality - France

Stethoscope

• Rene Laënnec

• Nationality - French

Cement

•William Aspdin

• Nationality - British

Laser

• Charles Townes

• Nationality - USA

Braille

• Louis Braille

• Nationality - France

Antiseptic

• Joseph Lister

• Nationality - British

Theory of relativity

• Albert Einstein

• Nationality - Germany