Blog Post Header Image BEHAVIOR OF CLOCKS AND MEASURING RODS ON A ROTATING BODY OF REFERENCE

BEHAVIOR OF CLOCKS AND MEASURING RODS ON A ROTATING BODY OF REFERENCE

The observer performs experiments on his circular disc with clocks and measuring-rods. In doing so, it is his intention to arrive at exact definitions for the signification of time- and space-data with reference to the …

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Blog Post Header Image A FEW INFERENCES FROM THE GENERAL PRINCIPLE OF RELATIVITY

A FEW INFERENCES FROM THE GENERAL PRINCIPLE OF RELATIVITY

Should we be justified in saying that for this reason electrostatics is overthrown by the field-equations of Maxwell in electrodynamics? Not in the least. Electrostatics is contained in electrodynamics as a limiting case; the laws …

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Blog Post Header Image IN WHAT RESPECTS ARE THE FOUNDATIONS OF CLASSICAL MECHANICS AND OF THE SPECIAL THEORY OF RELATIVITY UNSATISFACTORY?

IN WHAT RESPECTS ARE THE FOUNDATIONS OF CLASSICAL MECHANICS AND OF THE SPECIAL THEORY OF RELATIVITY UNSATISFACTORY?

The objection is of importance more especially when the state of motion of the reference body is of such a nature that it does not require any external agency for its maintenance, e.g. in the …

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Blog Post Header Image THE EQUALITY OF INERTIAL AND GRAVITATIONAL MASS AS AN ARGUMENT FOR THE GENERAL POSTULATE OF RELATIVITY

THE EQUALITY OF INERTIAL AND GRAVITATIONAL MASS AS AN ARGUMENT FOR THE GENERAL POSTULATE OF RELATIVITY

Relying on his knowledge of the gravitational field (as it was discussed in the preceding section), the man in the chest will thus come to the conclusion that he and the chest are in a …

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Blog Post Header Image GRAVITATIONAL FIELD

GRAVITATIONAL FIELD

If now, as we find from experience, the acceleration is to be independent of the nature and the condition of the body and always the same for a given gravitational field, then the ratio of …

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Blog Post Header Image SPECIAL AND GENERAL PRINCIPLE OF RELATIVITY

SPECIAL AND GENERAL PRINCIPLE OF RELATIVITY

Since the introduction of the special principle of relativity has been justified, every intellect which strives after generalization must feel the temptation to venture the step towards the general principle of relativity.

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Blog Post Header Image MINKOWSKI’S FOUR-DIMENSIONAL SPACE

MINKOWSKI’S FOUR-DIMENSIONAL SPACE

The four-dimensional mode of consideration of the “world” is natural on the theory of relativity, since according to this theory time is robbed of its independence. Moreover, according to this equation the time difference ∆t' …

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Blog Post Header Image THE RELATIVITY OF SIMULTANEITY

THE RELATIVITY OF SIMULTANEITY

Events which are simultaneous with reference to the embankment are not simultaneous with respect to the train, and vice versa (relativity of simultaneity). Every reference-body (co-ordinate system) has its own particular time; unless we are …

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Blog Post Header Image ON THE IDEA OF TIME IN PHYSICS

ON THE IDEA OF TIME IN PHYSICS

After some time perhaps the following answer would occur to you: “The significance of the statement is clear in itself and needs no further explanation; of course it would require some consideration if I were …

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Blog Post Header Image How to transfer airtime on Etisalat (9Mobile)?

How to transfer airtime on Etisalat (9Mobile)?

To begin, you also need to find out the PIN code for your SIM card. Typically, the mobile operator default PIN is 0000. Perhaps, to avoid unauthorized third-party access to your data, you want to …

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Blog Post Header Image THE MICHELSON-MORLEY EXPERIMENT

THE MICHELSON-MORLEY EXPERIMENT

In a wave phenomenon that involves a medium, the rest frame of the medium is a unique frame of reference. Observers in any frame can carry out experiments to determine their velocity relative to the …

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Blog Post Header Image THE FIRST ONE-HUNDREDTH SECOND BY STEVEN WEINBERG 3

THE FIRST ONE-HUNDREDTH SECOND BY STEVEN WEINBERG 3

So far our imagination carried us back to a temperature of 5,000 million million degrees, and we have had to deal with the strong, weak, and electromagnetic interactions. What about the one other grand class …

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Kindness is a mark of faith, and whoever has not kindness has not faith.
--- Prophet Muhammad Peace be Upon Him

Imagination is more important than knowledge. Life is like riding a bicycle. To keep your balance you must keep moving. If you can't explain it simply, you don't understand it well enough.
--- Albert Einstein