Retarded.. Hmmmm .. Okay ... Enjoy your ancient nuclear wars,inter space travelling space ships with reverse heard,genetically n molecular engineering,ancient plastic surgery - replacing a boy's head with an elephants, n now this ...
N sorry you guys forgot all that ... I deeply am ..
I think your education system did not teach you about Great Indians like :-
Aryabhatta :-Aryabhata is the author of several treatises on mathematics and astronomy, some of which are lost.
His major work,
Aryabhatiya, a compendium of mathematics and astronomy, was extensively referred to in the Indian mathematical literature and has survived to modern times. The mathematical part of the
Aryabhatiya covers arithmetic, algebra, plane trigonometry, and spherical trigonometry. It also contains continued fractions, quadratic equations, sums-of-power series, and a table of sines.
The
Arya-siddhanta, a lost work on astronomical computations, is known through the writings of Aryabhata's contemporary,Varahamihira, and later mathematicians and commentators, including Brahmagupta and Bhaskara I. This work appears to be based on the older Surya Siddhanta and uses the midnight-day reckoning, as opposed to sunrise in
Aryabhatiya. It also contained a description of several astronomical instruments: the gnomon (
shanku-yantra), a shadow instrument (
chhAyA-yantra), possibly angle-measuring devices, semicircular and circular (
dhanur-yantra /
chakra-yantra), a cylindrical stick
yasti-yantra, an umbrella-shaped device called the
chhatra-yantra, and water clocks of at least two types, bow-shaped and cylindrical.
Zero:- Zero was invented independently by the Babylonians, Mayans and Indians