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This is a thread of Some of the Great Ancient Astronomers of #India Hope you will like it.
1)Lagadha (1400 bc):The writer of earliest astronomical text,
Vedanga Jyotica,which provides details on several astronomical attributes,his work were also used for religious purposes ...
1)Lagadha (1400 bc):The writer of earliest astronomical text,
Vedanga Jyotica,which provides details on several astronomical attributes,his work were also used for religious purposes ...
It also explains astronomical calculations and calendar.
Vedanga Jyotica : it’s includes Indian astrology and mentions important aspects of the time and seasons, including
lunar months, solar months, and their adjustment by a lunar leap month of Adhimasa.
Vedanga Jyotica : it’s includes Indian astrology and mentions important aspects of the time and seasons, including
lunar months, solar months, and their adjustment by a lunar leap month of Adhimasa.
Six Ritus of India and Yugas are also described in it. It also mentions 27 constellations, eclipses, 7 planets
and 12 signs of the zodiac known at that time.
2) Aryabhatta (476–550 CE): Aryabhatta was the author of the Aryabhatiya and the
Aryabhatasiddhanta. He invented Zero
and 12 signs of the zodiac known at that time.
2) Aryabhatta (476–550 CE): Aryabhatta was the author of the Aryabhatiya and the
Aryabhatasiddhanta. He invented Zero
Some believe his birth place was near present day patna and some believed Kerala as his birth place.
His works included Arithmetic,algebra & trigonometry,quadratic equations etc.
He gave the value of pi(3.1416).
He gave the formula of (a+b)^2
His works included Arithmetic,algebra & trigonometry,quadratic equations etc.
He gave the value of pi(3.1416).
He gave the formula of (a+b)^2
He also rold that earth is spherical and its circumference is 24,835 miles...which is close to present calculation[24,901) miles.
He used the word bhugol (hindi term for geography )first time. Aryabhatta mentioned that the earth rotates about its axis.
He used the word bhugol (hindi term for geography )first time. Aryabhatta mentioned that the earth rotates about its axis.
Aryabhatta
also mentioned that reflected sunlight is the cause behind the shining of the moon.
His influence was strong in south India
3) Brahmagupta (598–668 CE): Wrote Brahma-siddhanta which dealt with both Indian mathematics and astronomy...
also mentioned that reflected sunlight is the cause behind the shining of the moon.
His influence was strong in south India
3) Brahmagupta (598–668 CE): Wrote Brahma-siddhanta which dealt with both Indian mathematics and astronomy...
Brahmagupta also calculated the instantaneous motion of a planet,gave correct equations for parallax and computation of eclipses. His works introduced the Indian concept of mathematics-based astronomy which were translated into arabic during the period of caliph Harun-al-Rashid
He also theorized that
all bodies with mass are attracted to the earth.
formula for the area of a cyclic quadrilateral and the length of its diagonals in terms of the length of its sides.
#India
#IndiaFightsCorona
all bodies with mass are attracted to the earth.
formula for the area of a cyclic quadrilateral and the length of its diagonals in terms of the length of its sides.
#India
#IndiaFightsCorona
4) Varahamihira (505 CE):astronomer and mathematician who
studied Indian astronomy as well as the many principles of Greek, Egyptian & Roman
astronomical sciences. Wrote Panchasiddhantika &Brihat-Samhita.He talked about subjects of human interest, including astronomy....
#India
studied Indian astronomy as well as the many principles of Greek, Egyptian & Roman
astronomical sciences. Wrote Panchasiddhantika &Brihat-Samhita.He talked about subjects of human interest, including astronomy....
#India
planetary movements, eclipses, rainfall, clouds, architecture, etc.
Varahamihira improved the accuracy of the sine tables of Aryabhata.
5) Bhaskara I (629 CE): His works on astronomy are Mahabhaskariya, Laghubhaskariya
and Aryabhatiyabhashya (629 CE).
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#IndiaFightsCorona
Varahamihira improved the accuracy of the sine tables of Aryabhata.
5) Bhaskara I (629 CE): His works on astronomy are Mahabhaskariya, Laghubhaskariya
and Aryabhatiyabhashya (629 CE).
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#IndiaFightsCorona
Bhaskara devised
methods for determining the parallax in longitude directly, the motion of the equinoxes
and the solstices, and the quadrant of the sun at any given time.
6)Lalla (eighth century CE): wrote Uisyadhivrddhida & corrected many assumptions of
Arvabhatiya.
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methods for determining the parallax in longitude directly, the motion of the equinoxes
and the solstices, and the quadrant of the sun at any given time.
6)Lalla (eighth century CE): wrote Uisyadhivrddhida & corrected many assumptions of
Arvabhatiya.
#India
The Sisyadhivrddhida of Lalla deals with planetary calculations, determination of the mean and true planets, three problems pertaining to one day rotational motion of Earth,eclipses,rising & setting of the planets, various cusps of the moon, planetary and astral conjunctions.
The second part,
titled Goladhyaya , deals with graphical representation of planetary
motion, astronomical instruments, spherics, and emphasizes on corrections and rejection
of flawed principles. Lalla also authored the Siddhantatilaka.
titled Goladhyaya , deals with graphical representation of planetary
motion, astronomical instruments, spherics, and emphasizes on corrections and rejection
of flawed principles. Lalla also authored the Siddhantatilaka.
7) Bhaskara II (1114 CE): His two works are Siddhantasiromani and Karanakutuhala
(About Astronomical Wonders).
He mentioned his observations of planetary positions,
conjunctions, eclipses, cosmography, geography, mathematics and...
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#IndiaFightsCorona
(About Astronomical Wonders).
He mentioned his observations of planetary positions,
conjunctions, eclipses, cosmography, geography, mathematics and...
#India
#IndiaFightsCorona
.. the astronomical
equipment used in his research at the observatory in Ujjain, which he headed.
He used systematic hindu decimals system.
He talked about arithmetic,algebra,astronomy.
He Introduced differential calculus,integral calculus much before Newton and leibniz...
equipment used in his research at the observatory in Ujjain, which he headed.
He used systematic hindu decimals system.
He talked about arithmetic,algebra,astronomy.
He Introduced differential calculus,integral calculus much before Newton and leibniz...
.. He stated that 1/0 is infinity.
He also calculated the time of earth revolution (365.2588 days)...which is close to present day calculation (365.2563 days)...just a difference of 3.5 min.
8)Shripati (1045 CE):an astronomer & mathematician who followed the Brahmagupta school
He also calculated the time of earth revolution (365.2588 days)...which is close to present day calculation (365.2563 days)...just a difference of 3.5 min.
8)Shripati (1045 CE):an astronomer & mathematician who followed the Brahmagupta school
..He wrote Siddhantasekhara in
20 chapters,introduced several new concepts, including moon's second inequality&gave the rules of signs for sum, subtraction,multiplication,division, square, square root, cube &cube root of +ve & -ve quantities & for solving a quadratic equation
20 chapters,introduced several new concepts, including moon's second inequality&gave the rules of signs for sum, subtraction,multiplication,division, square, square root, cube &cube root of +ve & -ve quantities & for solving a quadratic equation
9) Mahendra Suri (fourteenth century CE): Mahendra Suri authored the Yantra-raja -a Sanskrit work on astrolabe,
gave latitudes of 75 cities & made a list of latitudes for 32 stars, which were identified as relevant for purposes of calculations in India .
gave latitudes of 75 cities & made a list of latitudes for 32 stars, which were identified as relevant for purposes of calculations in India .
10) Nilakanthan Somayaji (1444–1544 CE): In his Tantrasangraha, he revised Aryabhata’s
model for the planets Mercury and Venus.
His equation of the centre for these planets
remained the most accurate until the time of Johannes Kepler in the seventeenth century...
model for the planets Mercury and Venus.
His equation of the centre for these planets
remained the most accurate until the time of Johannes Kepler in the seventeenth century...
.. He also authored a treatise titled Jyotirmimamsa highlighting
the necessity and importance of astronomical observations to obtain correct parameters
for computations.
11) Achyutha Pisaradi (1550–1621 CE): His work Sphutanirnaya (Determination of
True Planets) details an..
the necessity and importance of astronomical observations to obtain correct parameters
for computations.
11) Achyutha Pisaradi (1550–1621 CE): His work Sphutanirnaya (Determination of
True Planets) details an..
elliptical orbit correction.. Sphutanirnaya was
later expanded to Rasigolasphutaniti (True Longitude Computation of the Sphere
of the Zodiac). His one another work of Achyuta , Karanottama deals with eclipses and its predictions, and relationships between sun and moon.
later expanded to Rasigolasphutaniti (True Longitude Computation of the Sphere
of the Zodiac). His one another work of Achyuta , Karanottama deals with eclipses and its predictions, and relationships between sun and moon.
