31 dez 1912 ano - Henry Moseley- 1913 he observed the X-ray spectra of elements and found a direct relationship between the wavelengths of the elements spectra and the atomic number of the element (Moseley’s law). Shot and killed at the age of 27 during the Battle of Gallipoli.
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Data:
31 dez 1912 ano
Agora
~ 112 years ago