Vacuum tube

The invention:

 A sealed glass tube from which air and gas have
been removed to permit electrons to move more freely, the vacuum
tube was the heart of electronic systems until it was displaced
by transistors.


The people behind the invention:

Sir John Ambrose Fleming (1849-1945), an English physicist
and professor of electrical engineering
Thomas Alva Edison (1847-1931), an American inventor
Lee de Forest (1873-1961), an American scientist and inventor
Arthur Wehnelt (1871-1944), a German inventor

Vacuum cleaner

The invention:

The first portable domestic vacuum cleaner successfully
adapted to electricity, the original machine helped begin
the electrification of domestic appliances in the early twentieth
century.


The people behind the invention:

H. Cecil Booth (1871-1955), a British civil engineer
Melville R. Bissell (1843-1889), the inventor and marketer of the
Bissell carpet sweeper in 1876
William Henry Hoover (1849-1932), an American industrialist
James Murray Spangler (1848-1915), an American inventor

UNIVAC Computer

The invention: 

The first commercially successful computer system.

The people behind the invention:

John Presper Eckert (1919-1995), an American electrical engineer
John W. Mauchly (1907-1980), an American physicist
John von Neumann (1903-1957), a Hungarian American
mathematician
Howard Aiken (1900-1973), an American physicist
George Stibitz (1904-1995), a scientist at Bell Labs

Ultrasound

The invention: 

A medically safe alternative to X-ray examination,
ultrasound uses sound waves to detect fetal problems in pregnant
women.

The people behind the invention:

Ian T. Donald (1910-1987), a British obstetrician

Paul Langévin (1872-1946), a French physicist

Marie Curie (1867-1946) and Pierre Curie (1859-1906), the French husband-and-wife team that researched and developed the field of radioactivity

Alice Stewart, a British researcher

Ultramicroscope

The invention: 

A microscope characterized by high-intensity illumination
for the study of exceptionally small objects, such as colloidal
substances.


The people behind the invention:

Richard Zsigmondy (1865-1929), an Austrian-born German
organic chemist who won the 1925 Nobel Prize in Chemistry
H. F. W. Siedentopf (1872-1940), a German physicist-optician
Max von Smouluchowski (1879-1961), a German organic
chemist.

Ultracentrifuge

The invention: 

Asuper-high-velocity centrifuge designed to separate
colloidal or submicroscopic substances, the ultracentrifuge
was used to measure the molecular weight of proteins and
proved that proteins are large molecules.

Typhus vaccine

The invention: 

The first effective vaccine against the virulent typhus
disease.

The person behind the invention:

Hans Zinsser (1878-1940), an American bacteriologist and
immunologist

Turbojet

The invention:

 A jet engine with a turbine-driven compressor that
uses its hot-gas exhaust to develop thrust.

 The people behind the invention:

Henry Harley Arnold (1886-1950), a chief of staff of the U.S.
Army Air Corps
Gerry Sayer, a chief test pilot for Gloster Aircraft Limited
Hans Pabst von Ohain (1911- ), a German engineer
Sir Frank Whittle (1907-1996), an English Royal Air Force
officer and engineer