Experimental Observations Confirm Einstein's General Theory of Relativity

One of the prime works of Einstein was his theory of relativity. Even though it was accepted worldwide but there were some doubts regarding its confirmation on some large scale. But finally researchers have confirmed it observing the lights coming from distant stars and galaxies. This theory basically states that lights coming from all these distant sources will be affected by the gravity. Astrophysicists at Dark Cosmology center at Niels Bohr Institute have successfully managed to measure the light affected by gravity and hence have confirmed the theory.

To observe very large distance in the universe scientists use the phenomenon of measurement of redshift. In this the wavelength of light is assumed to shift more toward the red side. Larger the distance is more will be the shift. The amount of redshift indicated how much the university has expanded. Apart from this the redshift is also affected by the gravity of the masses, so in other words it can also give the indication about the gravitational force encountered by the light which in turn tells about the universe.



It is really interesting to see how all this was practically confirmed. Radek Wojtak, Steen Hansen and Jens Hjorth, analyzed lights from many galaxy clusters. All the light coming out was very much affected by the gravitational force. They studied wavelength of light emitted by galaxy lying in the middle of the cluster and of those at the edges. They concluded that light from the middle had considerable difficulty in coming out due very high amount of gravitational fields while that from the outer ones moved out quickly. After this using the gravitational potential of the entire cluster and with the help of general theory of relativity redshift for different location was calculated. The results were quite astonishing. The theoretical calculation using the relativity theory was in total confirmation with the observed experimental data. “Our analysis of observations of galaxy clusters shows that the redshift of the light is proportionally offset in relation to the gravitational influence from the galaxy cluster's gravity. In that way our observations confirm the theory of relativity," explains Radek Wojtak.

Practical confirmation of such a strong theory will greatly facilitate the budding astrophysicists in proposing new and strong theories towards the universe. This in turn will also help in understanding other dark secrets of the galaxy and new secrets could be uncovered.

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