New research published in Heritage Science has analyzed the geometric proportions of 'Agni Chayana' fire altars described in the Shatapatha Brahmana. By reconstructing these altars using high-precision digital tools, mathematicians discovered that the specific ratios used to transform circular altars into square ones with the same area represent a highly accurate approximation of Pi (π), calculated centuries before the Greek golden age.
The study argues that these rituals were not merely religious but served as a laboratory for geometry. The researchers identified a consistent use of the number 3.1416 in the layout of the bricks, suggesting that ancient Indian mathematicians had developed a proof-based understanding of the relationship between a circle's circumference and its diameter through the physical practice of construction.