Theory Of Relativity | Time Dilation | Twin Paradox | Interactive Class Discussion

SufalPhysicsForum 2020-10-17

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My dear physics loving friends, today I'm here with the video concerned with The Theory of Relativity, particularly two very important & big applications of the theory of Relativity which are Time Dilation & Twin Paradox. In future, I plan to work more on such topics. You may suggest the topics in the comment box or through whatsapp (09716238813) or through mail.
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Credits for this video are to my 12th Physics batch of Pride Tutorials, Lajpatnagar, particularly Varnika, who has explained her school project in our class so nicely that I decided to use that for my youtube video.
Moreover other credits to Suryaan Sinha for his infinite magnitude of work with my channel...

Theory of relativity includes two interrelated theories by Albert Einstein: special relativity and general relativity. Special relativity applies to all physical phenomena in the absence of gravity. General relativity explains the law of gravitation and its relation to other forces of nature. It applies to the cosmological and astrophysical realm, including astronomy.

The theory transformed theoretical physics and astronomy during the 20th century, superseding a 200-year-old theory of mechanics created primarily by Isaac Newton. It introduced concepts including spacetime as a unified entity of space and time, relativity of simultaneity, kinematic and gravitational time dilation, and length contraction. In the field of physics, relativity improved the science of elementary particles and their fundamental interactions, along with ushering in the nuclear age. With relativity, cosmology and astrophysics predicted extraordinary astronomical phenomena such as neutron stars, black holes, and gravitational waves.

Special relativity is a theory of the structure of spacetime. It was introduced in Einstein's 1905 paper "On the Electrodynamics of Moving Bodies". Special relativity is based on two postulates which are contradictory in classical mechanics:
The laws of physics are the same for all observers in any inertial frame of reference relative to one another (principle of relativity).
The speed of light in a vacuum is the same for all observers, regardless of their relative motion or of the motion of the light source.

General relativity is a theory of gravitation developed by Einstein in the years 1907–1915. The development of general relativity began with the equivalence principle, under which the states of accelerated motion and being at rest in a gravitational field are physically identical. This is incompatible with classical mechanics and special relativity because in those theories inertially moving objects cannot accelerate with respect to each other, but objects in free fall do so. To resolve this difficulty Einstein first proposed that spacetime is curved. In 1915, he devised the Einstein field equations which relate the curvature of spacetime with the mass, energy, and any momentum within it.

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