Originally there were three laws of Thermodynamics. The first two laws were introduced by *Rudolph Clausius* in 1851 and the third by *Walter Nerst* in 1905. The zeroth law is so named because it was introduced much later by *Ralph H. Fowler* in 1930s. It couldn't really be considered a fourth law, because the idea was already a fundamental part of thermodynamics, even before it was formalized as an axiom.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence