20th Century

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Inventions of the 20th century

Gas turbine

invented by Ægidius Elling

A fourth component is often used to increase efficiency (on turboprops and… 

Laminated glass

invented by Édouard Bénédictus

Laminated glass (LG) is a type of safety glass that holds together when… 

Fleming valve

invented by John Ambrose Fleming

The Fleming valve, also called the Fleming oscillation valve, was a thermionic… 

vacuum tube

invented by John Ambrose Fleming

A vacuum tube, electron tube, valve (British usage), or tube (North America),… 


invented by John Ambrose Fleming

A diode is a two-terminal electronic component that conducts current primarily… 


invented by Leo Baekeland

Polyoxybenzylmethylenglycolanhydride, better known as Bakelite… 


invented by Jacques E. Brandenberger.

Cellophane is a thin, transparent sheet made of regenerated cellulose. Its low… 

Haber process

invented by Fritz Haber

The Haber process, also called the Haber–Bosch process, is an artificial… 

Cloud chamber

invented by Charles Thomson Rees Wilson

A cloud chamber, also known as a Wilson cloud chamber, is a particle detector… 

Bergius process

invented by Friedrich Bergius

The Bergius process is a method of production of liquid hydrocarbons for use as… 

Kaplan turbine

invented by Viktor Kaplan

The Kaplan turbine is a propeller-type water turbine which has adjustable… 


invented by Walter Wilson William Tritton

A tank is an armored fighting vehicle intended as a primary offensive weapon in… 


invented by Jan Czochralski

Silicon is a chemical element with the symbol Si and atomic number 14. It is a… 

Crystal oscillator

invented by Alexander M. Nicholson

A crystal oscillator is an electronic oscillator circuit that uses the… 

Fischer–Tropsch process

invented by Franz Fischer Hans Tropsch

The Fischer–Tropsch process is a collection of chemical reactions that… 

Liquid fueled rocket

invented by Robert H. Goddard

A liquid-propellant rocket or liquid rocket utilizes a rocket engine that uses… 

Yagi-Uda Antenna

invented by Shintaro Uda

A Yagi–Uda antenna or simply Yagi antenna, is a directional antenna… 

Quartz clock

invented by J.W. Horton Warren Marrison

Quartz clocks and quartz watches are timepieces that use an electronic… 

The ball screw

invented by

A ball screw is a mechanical linear actuator that translates rotational motion… 

Phase-contrast microscopy

invented by Frits Zernike

Phase-contrast microscopy (PCM) is an optical microscopy technique that… 

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Inventions that changed the world