The Contributions to Science from Ancient India
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The contributions to Science from Ancient India January 28, 2015 Author { Alok Kumar, Department of Physics, State Univer- sity of New York, Oswego, NY 13126. Alok Kumar is a professor of physics at the State University of New York at Oswego. He was born and educated in India. Later, he taught at California State Univer- sity at Long Beach. In Oswego, Kumar has received Chancellors Award for Excellence in Teaching in 1997, the President Award for Creative and Scholarly Activity or Research in 2001, and over half a million dollars of grant money from the National Science Founda- tion, NASA or other agencies. Kumar is a recipient of the Alexander von Humboldt Foundation, Germany and NOVA/NASA fellowships. E-mail { [email protected] Education { Ph.D., Atomic Physics, Kanpur University, Kan- pur. Publication { Authors of the three books: (1) Science in the Medieval World by S. I. Salem and Alok Kumar, University of Texas Press, 1991 and 1996; (2) Sciences of the Ancient Hindus: Unlock- ing Nature in the Pursuit of Salvation, CreateSpace, 2014; and (3) A History of Science in World Cultures by Scott L. Montgomery and Alok Kumar, Routledge, to be published in 2015. Also, author of about seventy peer-reviewed publications in the fields of atomic physics, science education, and history of science. Abstract { Modern science and medicine would be unrecogniz- able, and far more primitive, without the immense contribution of the ancient Hindus. Even the most brief list of their discoveries and inventions would include such everyday essentials as our numerical system (incorrectly known as \Arabic" numerals), place value no- 1 Figure 1: A Portrait of Alok Kumar tation in base ten with zero as a numeral, the sine function and much of trigonometry, the diurnal motion of the Earth, advanced steel-making, and plastic surgery. These and many other advances attracted scholars from Greece, China, the Middle East, and Europe and had global impact throughout the ancient and medieval world. The works of noted scholars such as Megasthenes, Al-B¯ır¯un¯ı, Al- Khw¯arizm¯ı,Ibn Labb¯an,Fa-Hien, Hiuen Tsang, and I-tsing, Voltaire and Copernicus provide the direct testimony of the immense con- tributions of the ancient Hindus. In the modern era, thinkers and scientists as diverse as Goethe, Emerson, Jung, Oppenheimer, and Schr¨odinger,to name a few, have acknowledged their debt to an- cient Hindu achievements in science, technology, and philosophy. This article provides a brief account of the above-mentioned facts and is largely based on the book, Sciences of the Ancient Hindus by Alok Kumar. 2 1 About India The geography of India, with its vast mineral resources, diverse plant and animal life, favorable climate, and sound social ethics of the people provided material prosperity to the region and fostered the intellectual endeavors of the Hindus. Ralph Waldo Emerson (1803 - 1882 A.D.), an eminent American philosopher and poet, recognized this and wrote: \The favor of the climate, making subsistence easy and encouraging an outdoor life, allows to the Eastern nations a highly intellectual organization, - leaving out of view, at present, the genius of Hindoos [Hindus] (more Orient in every sense), whom no people have surpassed in the grandeur of their ethical statement" Emerson placed the genius of the Hindus at the top in comparison to other cultures was an outcome of his careful studies of the Hindu literature, including Vedas, Upanis.ads and Pur¯an. as. The Hindu philosophy, defined in the above-mentioned books, reaffirmed Emer- son's transcendentalism and helped him in his quest to define a truly representative man. Being a leading civilization that was quite prosperous and intel- lectually vibrant, India was visited by travelers from Greece, Rome, China, and Arabia during the ancient and early medieval periods. Many of these travelers provided accounts of the prosperity of India. An early account comes from Megasthenes (350 - 290 B.C.), who was an ambassador of Selucus I, a Greek king, who ruled India for a short period. He wrote that the Indians, \having abundant means of subsistence, exceed in consequence the ordinary stature, and are distinguished by their proud bearing. They are also found to be well skilled in the arts, as might be expected of men who inhale a pure air and drink the very finest water." Megasthenes stated that India never suffered from \famine" and \general scarcity in the supply of nourishing food." It is noteworthy that Megasthenes' statements were written after Alexander's invasion of India, a period when the life in Athens already reached its zenith. Yijing (or I-tsing; 643 - 713 A.D.), a Chinese traveler from Can- ton, visited India and wrote in his travel account that \ghee [clarified butter], oil, milk, and cream are found everywhere. Such things as cakes and fruit are so abundant that it is difficult to enumerate them 3 here." Yijing first went to Java, Indonesia, and stayed there for six months where he first learned the Sanskrit language. After becom- ing proficient in Sanskrit, he came to India and stayed for about 22 years, mostly in the region presently known as Bihar, which was a center of learning for the Buddhists. On his way back to China, he carried some 400 Sanskrit texts back with him. 2 Science and Religion In Hindu dharma, no barrier between science and religion ever ex- isted and both co-existed under the shelter of each other. In other words, there was no conflict and separation between the rationale thinking of \science" and the religious doctrines of the \sacred." The core disciplines of science, such as astronomy, medicine, and mathematics, were all considered sacred. The natural philosophy of the Hindus fulfills the religious needs of people. For example, Aryabhat¯ .a (born 476 A.D.) studied astronomy and other natural sciences in order to achieve moks.a (salvation). Aryabhat¯ .a wrote: \Whoever knows Da´sg¯ıtikaS¯utra [ten verses] which describes the movements of the Earth and the planets in the sphere of the aster- isms passes through the paths of the planets and asterisms and goes to the higher Brahman [God]." (Aryabhat¯ .¯ıya, Da´sg¯ıtika, 13.) About a millennium before Aryabhat¯ .a, Kan. ¯ada,a proponent of the atomic theory of matter, in his Vai´ses.ika-S¯utra, suggested that a person can achieve salvation by studying physics. In such a conducive en- vironment for the growth of science, it was bound to prosper among the ancient Hindus. And, indeed, the history of science in India is a testament to this superb growth. Astronomy and physics were not the only sciences that were con- sidered sacred by the Hindus; all the other sciences were also con- sidered divine. Mastery of any of the sciences was considered to be a pathway to salvation { a goal desired by all Hindus. The Agni- Pur¯an. a suggests that knowledge of the human anatomy can also lead to salvation. \Said the God of Fire: Now I shall describe the system of veins and arteries [N¯ad.¯ı-cakra] that are to be found in the human body. A knowledge of these [arteries and veins] leads to a knowledge of the divine Hari [God]." 4 The Ch¯andogya-Upanis.ad (7: 1: 2 - 4) cites an episode in which the vagabond deity N¯aradawanted to learn the ultimate knowledge that could lead him to salvation. To achieve his goal, N¯aradadecided to approach another sage, Sanatkum¯ara,who was quite knowledge- able. Since teaching is always learner-centered, Sanatkum¯araasked N¯aradaabout his existing knowledge to have a meaningful conver- sation. N¯aradamentioned astronomy (Naks.atra-vidy¯a) and math- ematics (r¯asi-vidy¯a), along with logic, history, grammar, fine arts, and the four Vedas as the knowledge that he had already mastered in his efforts to achieve salvation. N¯aradais considered one of highest seers (Deva-r.is.i) in the Hindu religion. The above episode reveals that acquiring knowledge of the natural sciences, along with religion and fine arts, was considered relevant to achieve salvation. In Hindu tradition, secular knowl- edge (apar¯a-vidy¯a) is considered to be helpful in achieving salvation, along with spiritual knowledge (par¯a-vidy¯a), as advised in Mun. d. aka- Upanis.ad (1: 1: 3 - 5.). Progress in science has never been a hindrance to spiritual growth in the history of Hindu dharma. This is in contrast to periods in some religions where people were tormented and had to make a choice between science and religion. The history of Europe provides examples of such confrontations between science and religion. For example, Bruno was burned to death and Galileo was imprisoned when his scientific teachings were in conflict with religion during the period of the Inquisition. 3 The Hindu Numerals It is practically impossible for people to function in any society in the absence of a number system. Therefore, most societies devised their own number system. For primitive people, small numbers were sufficient to meet their daily needs. Counting was mostly restricted to the use of their fingers { to designate the size of the family, the number of cows or sheep a person inherited, etc. People bartered different products of everyday necessities during the ancient world 5 and a visual estimate of volume or a feel for the weight of an ob- ject was good enough to finalize a transaction in the absence of proper weight standards. Eventually, currency transactions, sys- tems of weight and measures, arithmetic, and algebra evolved to meet the needs of trade. In time, the Greeks, Egyptians, Babyloni- ans, Mayans, Chinese, and Hindus devised their own counting sys- tems.