Subrahmanyan Chadrashekhar was the first person who prove that Black Holes like solutions can be real. In 1931 he calculated that a stationary astrophysical object above a certain limiting mass has no stable solutions. At that time this idea was appreciated by many scientist but Eddington opposed his idea. Eddington suppose in Read more…
Stellar Physics, The Physics of a Star Written by: Rahul Raturi (https://raturi2611.blogspot.com/) We all are made up of Star Dust. Carl Sagan (1934-1996) ~ Up there in the Night sky you all know what those mysterious twinkling objects are. Yes !! Those are stars. But for a long time, people Read more…
Is time travelling possible? Time travel used to be thought of as just science fiction, but Einstein’s general theory of relativity allows for the possibility that we could warp space-time so much that you could go off in a rocket and return before you set out.
Physics (PH) Mathematical Methods: Calculus of single and multiple variables, partial derivatives, Jacobian, imperfect and perfect differentials, Taylor expansion, Fourier series. Vector algebra, Vector Calculus, Multiple integrals, Divergence theorem, Green’s theorem, Stokes’ theorem. First order equations and linear second order differential equations with constant coefficients. Matrices and determinants, Algebra of complex Read more…
This course on Relativity (Special and General Theory) is basically meant for the amateurs and students who are interested in topics such as Black Holes, Cosmology or in the Classical Theory of Gravity. This course will take you from the basics required to understand the mathematical and physical formulations used Read more…
The first people to look up at the sky and wonder about what they saw were the earliest astronomers. These observers, watching the sky thousands of stars, identified five planets, and used the movements of the sun and the moon across the sky for keeping track of time. Whether in Read more…
The first person to fly into space was a Russian called Yuri Gagarin. On 12 April 1961, Alan Shepherd became the first American in space, although he didn’t orbit Earth. Two years after Gagarin’s flight, on 16 June 1963, Valentina Tereshkova became the first woman in space. She spent nearly Read more…
A space station provides a home in space where astronauts can live and work for months at a time. So far, space stations have all orbited earth just a few hundred kilometres above its surface. The first space station to be launched was the Russian Salyut 1 in 1971. Modern Read more…
A spacecraft is blasted into space by its launch vehicle or rocket. The rocket is the only machine powerful enough to reach ‘escape velocity’ – the speed needed to break free from the pull of earth’s gravity. Usually, the spacecraft is folded up in the nose cone of the rocket. Read more…
A radio telescope is used to pick up radio waves instead of light waves radio telescopes have a big dish to collect and focus data at the centre of the dish it has an antenna to pick up radio signals. Radio telescope dishes are very big around 100m diameter because Read more…