Defence Exam Notes: Important Inventions and Discoveries

By Dhruv Kumar|Updated : July 27th, 2021

Discovery and invention in Science and technology play an important role in the preparation of defence exams. In this article, we are covering important invention/discoveries and their inventors.  

 

Year 

Invention/Discovery

Inventor

1440

Printing Press

Johannes Gutenberg

1450

Anemometer

Leon Battista Alberti

1590

Microscope

Zacharis Janssen

1593

Thermometer

Galileo

1623

Automatic Calculator

Wilhelm Schickard

1628

Circulation of blood

William Harvey

1725

Clock Mechanical

Hsing and Ling-Tsan

1742

Centigrade Scale

Anders Celsius

1748

Electroscope

Jean Nollet

1752

Lightning Conductor

Benjamin Franklin

1766

Hydrogen

Henry Cavendish

1774

Chlorine

Karl Wilhelm Scheele

1775

Oxygen

Antoine Laurent Lavoisier

1775

Steam Ship

J.C Perier

1776

Submarine

David Bushnell

1783

Hot Air Balloon

Josef & Etienne Montgolfier

1785

Parachute

Jean Pierre Blanchard

 

Polio Vaccine

Jonas Edward Salk

1786

Steam Boat

John Fitch

1800

Volta

Electric Battery

1804

Locomotive

Richard Trevithick

1816

Stethoscope

Rene Laennec

1824

Electromagnet

William Sturgeon

1831

Chloroform

E. Soberran

1839

Bicycle

Kirkpatrick Macmillan

1839

Ozone

Christian Schonbein

1841

Typewriter

Peter Mitterhofer

1846

Sewing Machine

Elias Howe

1848

Motorcycle

Edward Butler

1851

Refrigerator

James Harrison

1852

Steam-Powered Airship

Henri Giffard

1858

Theory of Evolution

Charles Darwin

1861

Celluloid

Alexander Parkes

1861

Machine Gun

Richard Gaffing

1867

Dynamite

Alfred B. Nobel

1868

Helium

William Ramsay

1869

Periodic Table

Dmitri Mendeleev

1873

Barbed Wire

Joseph F. Glidden

1873

Electric Motor (DC)

Zenobe Gramme

1876

Microphone

Alexander Graham Bell

1878

Gramophone

Thomas Edison

1882

Electric Fan

Wheeler

1884

Fountain Pen

Lewis Edson Waterman

 

Petrol for Motor Card

Karl Benz

1886

fluorine

Ferdinand Frederick Henri Moissan

1888

Ball Point Pen

John Loud

1888

Bicycle Tyres

John Boyd Dunlop

1889

Cine Camera

Wm. Friese-Greene

1892

Animation

Emile Reynaud

1892

Diesel Engine

Rudolf Diesel

1894

Radio

Guglielmo Marconi

1894

Ship (Turbine)

Charles Parsons

1895

X-ray

Wilhelm Conrad Roentgen

1898

Radium

Marie & Pierre Curie

1899

Aspirin

Dr. Felix Hoffman

1900

Blood Group

Karl Lansdsteiner

1903

Aeroplane

Wilber and Orville Wright

1912

Vitamin A

Frederick Gowland Hpokins

1914

Air Conditioner

Willis Carrier

1922

Radar

Dr. Albert H. Taylor & Leo C. Young

1923

Insulin

Sir Frederick Banting

1926

Rocket Engine

Robert H. Goddard

1928

Penicillin

Alexander Fleming

1928

Xerox Machine

Chester Carlson

1935

Richter Scale

Charles Richter

1936

Jet Engine

Hans Von Ohain

1939

Helicopter

Igor Sikorsky

1945

Atom Bomb

Julius Robert Oppenheimer

1948

Transistors

John Bardeen, William Shockley & Walter Brattain

1959

Hovercraft

Christopher Cockerell

1960

Laser

Dr. Charles H. Townes

1964

Synthesizer

Dr. Robert Arthur Moog

1929

Vitamin K

Henrik Dam

1989

World Wide Web

Tim Berners Lee with Robert Cailliau 

 

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