History Of Indian Astronomy The Siamese Manuscript

The Siamese Manuscript holds the distinction of being the very first document relating to Indian Astronomy to reach Europe in a pristine form. Some fragments of Indian Astronomy had undoubtedly reached Europe in earlier times, but those tidbits were likely received in a highly altered form due to difficulties in translation, and the so-called cultural barrier. The Siamese Manuscript helped overcome this barrier by being a compendium of Indian astronomical knowledge in plain Siamese. The timing of the arrival of the manuscript in Europe was significant. After a couple hundred years the Renaissance was finally bearing fruit, and European intellectual prowess was at a peak. The deeper principles of Indian Astronomy, which had gone over the heads of the Greeks and the Arabs who first encountered them, could now be fully understood and appreciated for the first time by people outside India.

India has a strong and ancient tradition of astronomy, which seamlessly merges with the current activities in Astronomy and Astrophysics in the country. While the younger generation of astronomers and students are reasonably familiar with the current facilities and the astronomical research, they might not have an equally good knowledge of the rich history of Indian astronomy. This particular volume, brought out as a part of the Platinum Jubilee Celebrations of Indian National Science Academy, concentrates on selected aspects of historical development of Indian astronomy in the form of six invited chapters. Two of the chapters – by Balachandra Rao and M.S. Sriram – cover ancient astronomy and the development of calculus in the ancient Kerela text Yuktibhasa. The other four chapters by B.V. Sreekantan, Siraj Hasan, Govind Swarup and Jayant Narlikar deal with the contemporary history of Indian astronomy covering space astronomy, optical astronomy, radio astronomy and developments in relativistic astrophysics. These chapters, written by experts in the field, provide an in-depth study of the subject and make this volume quite unique.

Illustrations: Numerous Colour Illustrations Description: The volumes of the Project of History of Science, Philosophy and Culture in Indian Civilization aim to discover the central aspects of India's heritage and present them in an interrelated manner. In spite of their unitary look, these volumes recognize the difference between the areas of material civilization and those of ideational culture. The Project is not being executed by a single group of thinkers, methodologically uniform or ideologically identical in their commitments. Rather, contributions are made by different scholars of diverse ideological persuasions and methodological approaches. The Project is marked by what may be called 'methodological pluralism'. In spite of its primarily historical character, this project, both in its conceptualization and execution, has been shaped by scholars drawn from different disciplines. It is the first time that an endeavour of such unique and comprehensive character has been undertaken to study critically a major world civilization. This Volume endeavours to present the perceptible facets of the tradition of astronomy in India : - the torch-bearers of this tradition and their texts; main characteristics of Indian astronomy; scientific approach to the phenomenon of eclipse; pancanga and its social dimensions including the vrata-s, festivals and other observances; origin of astrological ideas, their seeming links with astronomy and certain contradictions; extensive computations concerning planetary revolutions in a huge cyclic period, mean as well as true positions of planets and associated mathematical aspects. In order to have the narrative undisturbed, the related mathematical astronomy has been given in the Appendices. Computations apart, Indian astronomers were keen observers of the motions of celestial bodies and used several instruments, and this aspect has been dealt with appropriately. The question of transmissions in the early centuries before and after the Christian Era vis-a-vis the originality and endogenous developments of Indian astronomy, has been addressed in an objective manner. Since Islamic astronomy has also fostered its tradition in India for over 500 years, three articles on this have been reproduced in the Appendices. Indian astronomical texts are noted for their mathematical-astronomical scientific terminology which was so standardized that it enabled astronomers (who were separated both in time and space), to articulate and promote this tradition over the centuries, as evidenced by the extensive glossary of technical terms given at the end. It is hoped that this Volume, probably the first of its kind inasmuch as it sheds light on both the scientific and the long tradition of Indian astronomy, will be found useful by scholars and general readers alike.

Indian scientific achievements in the early twentieth century are well known, with a number of heralded individuals making globally recognized strides in the field of astrophysics. Covering the period from the foundation of the Asiatick Society in 1784 to the establishment of the Indian Association for the Cultivation of Science in 1876, Sen explores the relationship between Indian astronomers and the colonial British. He shows that from the mid-nineteenth century, Indians were not passive receivers of European knowledge, but active participants in modern scientific observational astronomy.

`Tantrasangraha` By The Renowned Kerala Astronomer Nilakantha Somayaji (C. 1444-1545 Ad) Ranks Along With `Aryabhatiya` Of Aryabhata And Siddhantasiromani (C. 1150 Ad) Of Bhaskaracharya As One Of The Major Works Which Significantly Influenced All Further Work On Astronomy In India.