Category Archives: world events

1953 Rosalind Franklin maps DNA

Posted on 1953-11-30 by PSNS Secretary

Rosalind Franklin’s work to make clearer X-ray patterns of DNA molecules laid the foundation for James Watson and Francis Crick’s suggestion that DNA is a double-helix polymer.

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1939 – 45 World War II

Posted on 1939-09-01 by PSNS Secretary

24 January 1940 last monthly talk of PSNS, joint with Royal Horticultural Society of Perthshire till 1946 (Proc, vol 10, ii).

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1915 Einstein’s Theory of General Relativity published

Posted on 1915-11-30 by PSNS Secretary
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World War l

Posted on 1914-07-28 by PSNS Secretary

World War I (or the First World War, often abbreviated as WWI or WW1) was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918.

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1869 DNA discovered?

Posted on 1869-11-30 by PSNS Secretary

Swiss researcher Friedrich Miescher, who was originally trying to study the composition of lymphoid cells (white blood cells). Instead, he isolated a new molecule he called nuclein (DNA with associated proteins) from a cell nucleus.

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1859 ‘On the Origin of the Species’ published

Posted on 1859-11-30 by PSNS Secretary
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