Michał Sędziwój: an alchemist who discovered oxygen
(2 February 1566 – 1636)
An alchemist known all over Europe, he was diligent in his research and performed many complex physical and chemical experiments. In his writings he often described the life-giving “philosophical salt” hidden in the air, which is why he is considered one of the discoverers of oxygen and thus a pioneer of modern chemistry. by Piotr...