Bywydau wedi Dechrau

Pwy a aned ym mis Medi 1877

4 coffadwriaeth wedi'u canfod

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Gweld pob un yn Bywydau gyda'r hidlydd wedi'i gymhwyso

James Hopwood Jeans

18771946

British mathematician, astronomer, and physicist known for his theories in cosmology and leadership in scientific societies

Kārlis Ulmanis

18771942

Latvian politician, diplomat, and agronomist who served as the country's first Prime Minister during its interwar period of independence

Frederick Soddy

18771956

English radiochemist and Nobel laureate who, with Ernest Rutherford, explained radioactivity as the transmutation of elements and proved the existence of isotopes

Francis William Aston

18771945

British chemist and physicist who won the 1922 Nobel Prize for his mass spectrograph, which led to the discovery of isotopes in non-radioactive elements and the enunciation of the whole-number rule