1898 - Waldo Semon - invented vinyl
Arthur Holly Compton born 1892: cosmic rays and X-rays; Compton scattering; Nobel prize in Physics, 1927
John Kidd born 1775: codiscoverer of naphthalene in coal tar; author of 1833 treatise "On the Adaptation of External Nature to the Physical Condition of Man", intended to show how God was manifest in creation.
Carl Mosander born 1797: discovery of erbium (Er, element 68), lanthanum (La, 57), terbium (Tb, 65); discovered "didymium" (later resolved into neodymium and praseodymium)
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