Submitted by Twinkle on 04/07/2011 03:38 AM Flag This Paper
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Brief Summary of Famous Scientist
John Dalton
* 6 September 1766 – 27 July 1844
* English chemist, meteorologist and physicist.
* Best known for his pioneering work in the development of modern atomic theory, and his research into colour blindness (sometimes referred to as Daltonism, in his honour).
Five main points of Dalton's atomic theory
* The atoms of a given element are different from those of any other element; the atoms of different elements can be distinguished from one another by their respective relative atomic weights.
* All atoms of a given element are identical.
* Atoms of one element can combine with atoms of other elements to form chemical compounds; a given compound always has the same relative numbers of types of atoms.
* Atoms cannot be created, divided into smaller particles, nor destroyed in the chemical process; a chemical reaction simply changes the way atoms are grouped together.
* Elements are made of tiny particles called atoms.
Joseph. John Thomson
* 18 December 1856 – 30 August 1940
* British physicist and Nobel laureate
* Credited for the discovery of the electron and of isotopes, and the invention of the mass spectrometer.
* Thomson was awarded the 1906 Nobel Prize in Physics for the discovery of the electron and for his work on the conduction of electricity in gases.
* Helped revolutionize the knowledge of atomic structure by his discovery of the electron (1897). He received the Nobel Prize for Physics in 1906 and was knighted in 1908.
Ernest Rutherford
* 30 August 1871 – 19 October 1937
* New Zealand-born British chemist and physicist who became known as the father of nuclear physics
* In early work he discovered the concept of radioactive half life, proved that radioactivity involved the transmutation of one chemical element to another, and also differentiated and named alpha and beta radiation.
* It is the basis for the Nobel Prize in...