Difference between revisions 4794896 and 4794929 on mswiki

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[[Fail:2064 aryabhata-crp.jpg|thumb|300px|Arca Aryabhata di tapak [[Inter-University Centre for Astronomy and Astrophysics|IUCAA]], [[Pune]]. Dengan tiadanya maklumat diketahui mengenai rupawannya, apa-apa imej Aryabhata berasal dari konsepsi artis.]]
(contracted; show full)own in modern units but his estimate had an error of around 5–10%.<ref>[http://www.nasa.gov/lb/audience/forstudents/5-8/features/F_JSC_NES_School_Measures_Up.html "JSC NES School Measures Up"], ''NASA'', 11th April, 2006, retrieved 24th January, 2008.</ref><ref>[http://www-istp.gsfc.nasa.gov/stargaze/Scolumb.htm "The Round Earth"], ''NASA'', 12th December, 2004, retrieved 24th January, 2008.</ref>

=== Tempoh sidereal ===


Considered in modern English units of time, Aryabhata calculated the [[sidereal rotation]] (the rotation of the earth referencing the fixed stars) as 23 hours, Dipertimbangkan dalam unit masa Inggeris moden, Aryabhata mengira [[putaran sisi]] (putaran bumi merujuk bintang tetap) sebagai 23 jam, 56 minutesit, dand 4.1 seconds; theaat; nilai modern vialue isah 23:  56:  4.091. Similarly, his value for the length of theBegitu juga, nilainya untuk [[sidereal year]] padat 365 days, 6 hourshari, 6 jam, 12 minutesit, dand 30 seconds is an error of 3 minutes aat adalah kesalahan 3 minit dand 20 seconds over the length of a year. The noaat sepanjang satu tahun. Pengertioan ofwaktu sidereal time was known in most other astronomical systems of the time, but this computation was likely the most accurate of the perioddiketahui di kebanyakan sistem astronomi lain pada masa itu, tetapi pengiraan ini mungkin yang paling tepat pada masa itu.

=== Heliosentrisme ===

As mentioned, Aryabhata claimed that the Earth turns on its own axis, and some elements of his planetary epicyclic models rotate at the same speed as the motion of the Earth around the Sun. Thus, it has been suggested that Aryabhata's calculations were based on an underlying [[heliocentrism|heliocentric]] model, in which the planets orbit the Sun.<ref>The concept of Indian heliocentrism has been advocated by B. L. van der Waerden, ''Das heliozentrische System (contracted; show full)
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