Atom research is based on the ideas of the ancient yogi Thirumullar. The name of the book is Thirumantram. According to the study, the mantra mentioned in the ancient Vedas is called Namashivaya. Tamil numbers are given for characters except for names. These numbers correspond to modern-day elements. He also talks about the division and size of the atom. Let us explain it in today's modern way. What is the size of the atom according to the new calculations? This is also explained in this book.