Template:Selected anniversaries/February 18: Difference between revisions

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||1913: Chemist Frederick Soddy introduced the term "isotope". Soddy was an English chemist and physicist who received the Nobel Prize for Chemistry in 1921 for investigating radioactive substances. He suggested that different elements produced in different radioactive transformations were capable of occupying the same place on the Periodic Table, and on 18 Feb 1913 he named such species "isotopes" from Greek words meaning "same place." He is credited, along with others, with the discovery of the element protactinium in 1917. *TIS https://pballew.blogspot.com/2019/02/on-this-day-in-math-february-18.html Pic.
||1913: Chemist Frederick Soddy introduced the term "isotope". Soddy was an English chemist and physicist who received the Nobel Prize for Chemistry in 1921 for investigating radioactive substances. He suggested that different elements produced in different radioactive transformations were capable of occupying the same place on the Periodic Table, and on 18 Feb 1913 he named such species "isotopes" from Greek words meaning "same place." He is credited, along with others, with the discovery of the element protactinium in 1917. *TIS https://pballew.blogspot.com/2019/02/on-this-day-in-math-february-18.html Pic.


||1919: Clifford Ambrose Truesdell III born ... mathematician, natural philosopher, and historian of science.
||1919: Clifford Truesdell born ... mathematician, natural philosopher, and historian of science. Pic.


File:Clyde W. Tombaugh.jpg|link=Clyde Tombaugh (nonfiction)|1930: While studying photographs taken in January, astronomer [[Clyde Tombaugh (nonfiction)|Clyde Tombaugh]] discovers Pluto.
File:Clyde W. Tombaugh.jpg|link=Clyde Tombaugh (nonfiction)|1930: While studying photographs taken in January, astronomer [[Clyde Tombaugh (nonfiction)|Clyde Tombaugh]] discovers Pluto.

Revision as of 14:23, 31 May 2019