Question

name any two Indian inventions in the past 5 years that has helped India

Globally to make its name.​

Answer 1

Answer:

i) Periodicity of comets

Indian astronomers by the 6th century believed that comets were celestial bodies that re-appeared periodically. This was the view expressed in the 6th century by the astronomers Varahamihira and Bhadrabahu, and the 10th-century astronomer Bhattotpala listed the names and estimated periods of certain comets, but it is unfortunately not known how these figures were calculated or how accurate they were.

ii) Earth's orbit (Sidereal year):

The Hindu cosmological time cycles explained in the Surya Siddhanta (c.600 CE), give the average length of the sidereal year (the length of the Earth's revolution around the Sun) as 365.2563627 days, which is only a negligible 1.4 seconds longer than the modern value of 365.256363004 days. This calculation was the most accurate estimate for the length of the sidereal year anywhere in the world for over a thousand years.