This book is dedicated to those who would like to decode the hymns of Rig-Veda and understand the scientific principles hidden. The Rishis, in a state of super-consciousness, observed the laws of nature and its underlying scientific principles. They presented the observations in hymns with simple words but deep in meaning. ___ Radhika Raman Prasad Sinha's quest for scientific meaning behind rituals and customs eventually led him to an in-depth study of the ancient Indian scriptures, particularly the Vedas. ___ Radhika Raman Prasad Sinha was born on May 26, 1937, at old Patna City in the vicinity of Patna Sahib Gurudwara in the Bihar state, India. The eldest son of Sri. Gorakh Prasad and Smt. Umraoti Devi, he spent his childhood at ancestral villages with maternal and paternal grandparents and extended family.