Preceden

Timeline Grade 8 Lesson 11

Discoveries in Science, Medicine and Communications

Events

The First Chemical Revolution

1770 - 1820

During this period chemists like Antoine Lavoisier in France discovers the Law of the Conservation of Mass and discovers that water is made of the compounds of oxygen and hydrogen! In England, the chemist John Dalton discovers the atom theory and measures the different weights of oxygen and hydrogen.

Edward Jenner and Smallpox Vaccination

1796

Early Electric Motors

1821 CE - 1840 CE

Age of the Telegraph

1844 - 1902

Samuel Morse develops the system of Morse Code that can be electrically sent by cable to send messages between cities. By 1866 a trans-atlantic cable is laid connecting Europe with America, and by 1902 a trans-Pacific cable is laid across the Pacific Ocean. The invention of the telephone replaced the effectiveness of the telegraph.

Discovery of Anesthesia

1846

Darwin publishes On the Origin of the Species

1859

Charles Darwin publishes his theory of evolution in his book, On the Origin of the Species. Alfred Russell Wallace would publish a similar theory of evolution his The Malay Archipeligo (1869)

Antiseptic Surgery

1867

Joseph Lister develops the first antiseptic methods of mecical surgery

Germ Theory

1876 - 1884

Dr. Robert Koch discovers germ theory as the source of infections in medicine.

Invention of Telephone

March 10, 1876

Alexander Graham Bell demonstrates the first successful use of the telphone

First Electric Car

1888 CE

German Flocken Elektrowagen

Marconi develops the Radio

1894 - 1898

Guglielmo Marconi develops radio into a commercially viable system of wireless communication

Atomic Theory and Nuclear Physics

1896 - Present

Henri Becquerel, Niels Bohr, Albert Einstein and successive scientists develop the theory and practice of atomic theory that leads to nuclear power and the invention of atomic bombs and nuclear weapons.

Insulin

1920 CE - 1923 CE

Frederick Banting and Charles Best develop insulin as a treatment for diabetes. By 1923 it begins to be mass-produced by Eli Lilly pharmaceutical company.

Penicillin

1929 - 1945

Alexander Fleming discovers Penicillin. It first becomes a mass produced antibiotic drug during World War II

Radar

1935

In Britain, Robert Watson-Watt develops the first viable radar system. This invention will give an advantage to the Allied forces during World War II as they were able to locate ships at sea or airplanes.

Television

1939

RCA introduces the first regular system of television broadcasting and imaging. They debut their system of broadcasting at the New York World's Fair later that year

Communications Satellites

1960 - Present

By 1960 the first regular communications satellites were beaming signals to earth. In 1964 the Tokyo Olympics were televised and live transmissions sent around the world via satellite.