Tracing the alchemists at Rudolf II court
Before the science of chemistry there existed alchemy in the middle ages. The aim of alchemists was to invent the elexir of life and love, and to convert non-precious metals into gold. The alchemists invented alloys and new periodic elements. If they did not achieve their goal they used to think there was no favourable position of planets or they did not pray enough. Most known English alchemists John Dee and Edward Kelly lived and made their tests in Prague at the court of emperor Rudolf II in the 17th century.