Evolution And Science Of Indian Hindu And Other Calendars

About the Book This book is about the evolution of different Calendar Systems from Sumerian to Gregorian and their logic, history, science. Many allied topics such as the eclipse, are explained, with real-life examples. Facts like, why a month has 28, 29, 30 or 31 days are explained with reasons and chronology. The book is a must also for all Indians, who will find answers to almost all queries regarding Indian and Hindu calendars. "A festival falling on different dates (of a Gregorian calendar) in different years is a common feature of all religions. For Hindus, the Holi Festival may occur on any day from March 1 to March 29; for Muslims, the Id may happen on any day of the year, whereas for Christians, the Easter Sunday may occur from March 22 to April 25,..." The author R. K. Chopra is a Mining Engineer, retired from the post of Director from a multi-billion dollar turnover company.

Calendars are created by civilisations to give meaning to the continuous flow of time according to their world-views. Over the past millennia, India has developed it's own unique collection of many calendars for regulating it's religious and cultural life. The current book presents a comprehensive account of their structure and relative importance at the present time and places them in the context of other calendars prevalent outside India. Suggestions have also been made for making some changes to bring them in line with our current astronomical knowledge. This book will be very useful to students and anyone who is curious about calendars.

This book critically examines different aspects of scientific and technological development in Ancient India. It studies the special contribution of the history of science in our scientific understanding and its relationship with the philosophy and sociology of science. The volume: Discusses diverse and wide-ranging themes including Tibetan Buddhist tradition of neuro-biology; Sheds light on the unique developments within iron technology and urbanization in ancient Odisha; Studies the trajectory of proto-historic astronomy in India and the science of monsoon in early India; Evaluates the legacy of Aryabhata based on his major works related to astronomy and mathematics through a multidimensional perspective; Analyses the traditional knowledge of medicine in early India, the golden age of surgery with reference to the ancient Greek and Arabic systems of medicine, and the Buddhist influence on the science of medicine in Tibet. This book will be an essential read for scholars and researchers of ancient history, Indian history, history of science, history of technology, science and technology studies, and South Asian studies.

The complete illustrated science encyclopedia covering the history, key discoveries, inventions and people This remarkable reference book reveals the story of scientific progress from the invention of the wheel to 21st-century climate solutions, including everything from ancient Greek geometry and quantum physics to the worldwide web. Explore every key moment of scientific discovery and find out how the concepts, inventions and the individuals behind them have changed our world. With stunning artworks and authoritative information this makes even complex scientific subjects easily comprehensible.

2023-24 RAS/RTS General Knowledge & General Science Solved Papers