Aryabhatta ( 476 AD to 550 AD ) was an Indian mathematician and astronomer who lived during the classical period of Indian mathematics and astronomy. He thrived during the Gupta period, producing works such as the Aryabhatiya, which states that he was 23 years old in 3600 Kali Yuga, 499 CE. This article will explain to you about the Aryabhatta (5th Century) which will be helpful in Ancient History preparation for the UPSC Civil service exam.

Aryabhatta (5th Century)

• Aryabhatta, who was born in Kerala and lived from 476 AD to 550 AD, graduated from the ancient university of Nalanda.
• He then moved to Bihar, where he continued his education at a renowned learning institution nearby Kusumapura.
• He spent the late 5th and early 6th centuries living in Taregna District in Bihar.
• Aryabhatta was a mathematician, astronomer, astrologer, and physicist who lived in the fifth century.
• He was also a mathematician who broke new ground.
• Aryabhatta was a famous mathematician during the Gupta period. He authored Aryabhattiya at the age of 23 and afterwards Arya-Siddhanta.
• He worked on a pi estimate of 3.1416.
• In trigonometry, he discovered that the area of a triangle equals the product of a perpendicular and the half-side.
• He also observed the movements of the solar system and calculated that the solar year lasts 365.8586805 days.
• Aryabhatta stayed in Kusumpur, Pataliputra.
• The Aryabhatiya cites Aryabhata being 23 years old 3,600 years into the Kali Yuga, however this does not imply that the work was written at that period.
• This year corresponds to 499 CE, implying that he was born in 476.

Aryabhatta

Aryabhatta - Facts

• He wrote Aryabhattiya, a compendium of mathematics at the period. It is divided into four pieces.
• He presents the approach of indicating large decimal values using alphabets in the first part.
• The second half contains challenging problems from current Mathematics areas such as number theory, geometry, trigonometry, and algebra.
• Zero and Aryabhatta: He demonstrated that zero was more than simply a number; it was both a symbol and a notion.
• He calculated the precise distance between the Earth and the Moon.
• The discovery of zero introduced a new dimension to negative numbers.
• The final two parts of Aryabhatiya are on astronomy, also known as Khagol-shastra (Khagol was the famous astronomical observatory at Nalanda, where Aryabhatta studied).
• It was necessary for the advancement of the science of astronomy to have accurate calendars, a better understanding of climate and rainfall patterns for timely sowing and crop selection, fixing the dates of seasons and festivals, navigation, time calculation, and casting horoscopes for use in astrology.
• Because of the need to traverse oceans and deserts at night, knowledge of astronomy, particularly knowledge of the tides and stars, was crucial in commerce.
• He rejected the belief that our world is 'Achala' (immovable) and asserted that 'the earth is spherical and spins on its own axis.'
• Using examples, he demonstrated that the appearance of the sun travelling from east to west is incorrect.
• One example is when a person goes by boat, the trees on the coast appear to move in the other direction.
• He also claimed that the moon and planets are illuminated by reflected sunlight, which was eventually proven in contemporary times.
• He also provided a scientific explanation for the solar and lunar eclipses, dispelling the myth that the eclipses were caused by Rahu, Ketu, or another rakshasa (demon).
• As a result, India's first satellite into orbit was christened Aryabhatta.

Aryabhatta - Satellite

Contributions to Astronomy

• In several sources, he appears to relate the apparent motions of the sky to the rotation of the Earth.
• He could have imagined the planets' orbits were elliptical rather than circular.
• Contrary to widespread belief at the time, Aryabhata accurately stated that the world revolves on its axis on a regular basis and that the apparent movement of the stars is caused by the rotation of the globe.
• This is alluded to in the first chapter of the Aryabhatiya, where he specifies the number of earth rotations in a yuga, and is discussed in the gola chapter.
• According to Aryabhata's geocentric conception of the solar system, the Sun and Moon are each carried by epicycles.
• Solar and lunar eclipses were scientifically described by Aryabhata.
• Aryabhatta explored the actual cause of solar eclipses in the Surya Siddhanta.
• Reflecting sunlight, he claims, illuminates the Moon and planets.
• He explains eclipses as shadows thrown by and falling on Earth, as opposed to the commonly held belief that eclipses are caused by Rahu and Ketu (identified as the pseudo-planetary lunar nodes).
• He describes the size and extent of the Earth's shadow in considerable detail (verses gola.38–48), and then explains how to compute the size of the obscured section during an eclipse.
• Heliocentrism: As previously stated, Aryabhata pushed for an astronomical model in which the Earth rotated on its own axis.
• His model also corrected the speeds of the planets in the sky in terms of the Sun's mean speed.
• Thus, it has been proposed that Aryabhata's calculations were based on a heliocentric model in which the planets orbit the Sun, albeit this has been refuted.

Conclusion

Aryabhatta was an Indian astronomer and mathematician who flourished during the classical period of Indian mathematics and astronomy. During the Gupta dynasty, Aryabhatta was a well-known mathematician. At the age of 23, he wrote Aryabhattiya, followed by Arya-Siddhanta. Although the Aryabhatiya mentions Aryabhata being 23 years old 3,600 years into the Kali Yuga, this does not mean that the book was authored during that time period.