Distillation is a process in which a substance is heated to convert it into a vapor and then cooled back into a liquid. By this the liquid is purified.
Spirit, alcohol is thus distilled or distilled. Water is also done.
This technique of upward fall was also known to man in ancient times.
From the evidence found in Pakistan, BC. It appears that the people of the Indus Valley Civilization knew the technique of Urdhwapatana 2000 years ago.
However, the science of properly understanding this process and using it properly was developed in BC. Developed in the 400s. But it took another 800 years to develop the technique of steaming water and storing it and turning it back into water.
