THEORY OF RELATIVITY: Explained in 100 Easy Question and Answers

The Theory of

The following topics are explained in simple words in this book

1) Relativity in common life.

2) Theory of Relativity introduction.

3) Special Theory of Relativity

4) Velocity of light.

5) Mass of a moving body.

6) Time Dilation.

7) Length Contraction.

8) E=mc²

9) Nuclear Fission

10) Nuclear Fusion

11) Atomic Bomb and Einstein.

12) Relativity of Simultaneity.

13) General Theory of Relativity.

14) Gravitational Lensing

15) Einstein’s Cross

16) Global Positioning System (GPS)

17) Big Bang Theory

18) Dark energy and Cosmological constant.

19) Relativity Theory and Modern Cosmology.

20) Frame- dragging.

21) Space-time.

22) Space-time Curvature.

23) Beginning of the Universe.

24) Twin Paradox.

25) Einstein’s personal life.

26) Summary of Relativity theory.

27) Four examples to show that the “Time is also Relative"

A few Sample Questions From the BOOK.

17) What is the relevance of Theory of Relativity?

Once Space and time were considered to be absolute, the Theory of Relativity made it relative. Once the speed of light was considered to be relative, the Theory of Relativity made it absolute. Previously Space and Time were considered two separate entities. Theory of Relativity combined them into a single fold and made “space –time continuum”.

22) Can an object travel faster than light?

No signal on the Earth can travel faster than light. If a constant force is given to an object and accelerate to go faster than light, it would never be done. If the velocity of the object is increased, the object’s mass is increased and the velocity would become slower and slower and it would never go more than the velocity of light.

The velocity of light which is 299,792.458 Km/sec or 1,86,282.397 Miles/sec is the Universal limiting velocity, nothing can travel faster than light. Einstein has proved it.

63) Which theory is difficult to understand? Special or General Theory?

Richard P Brennan in his book, “Heisenberg probably slept here” says, “the general theory is considered by historians of science to be much greater intellectual achievement than the special theory”. Also he says, “For many years the General theory of relativity was regarded as too opaque and difficult even for the most of the scientists to understand”. Today many books have been published on General theory of relativity.

89) Can you give a humorous incident in Einstein’s life?

One day Einstein’s car driver, who had attended all his lectures, told him that he could give lectures instead of him. In next lecture Einstein sat at the back in driver’s uniform and driver delivered lecture in Einstein’s dress. At the end, one person from the audience asked a difficult question, to which the driver said, “it is very simple question, my driver sitting at the back will very well answer it”.

Reference Books:

• The Big Bang theory by Karen C Fox
• Einstein by Walter Issacson
• Albert Einstein by Folsing
• Einstein on Politics by David E Rows
• Einstein- A hundred years of relativity by Andrew Robinson
• Heisenberg Probably Slept Here by Hichard P brennan
• Einstein in Love by Dennis Overbye
• The big Idea, Einsteins Relativity.
• Chief Engineer of the Universe Albert Einstein by Jugen Renn.
• Einstein for Dummies by Carlo I.Calle
• ABC of Relativity by Betrand Russell
• The Meaning of Relativity by albert Einstein
• In Search of big bang by John Gribbin.
• Stephen Hawking universe by Jon Boslough
• The Great Ideas In Physics by Alen Lightman
• What is Theory of Relativity by Zdornykh
• The Fabric of relativity by David Deutsch
• Einstein’s Brain Child Relativity by Barry Parker
• A stubborn Persistent Illusion by Edt Jennifer Kalus.
• E=mc² by David Bodanis

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