Journal of Physics & Astronomy

Abstract

About Time-frame Conversion

When an Observer measures the time of events of another Source, the time needed of the transferring media to travel the distances between the Source and Observer will distort the perceived time when they move relative to each other. Doppler Effect determines the frequencies using the angle of movement and velocity, but not calculating the exact changes of distance during the observed period, so its results are correct only in special circumstances.

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Abstract

The most famous equation in the world is probably the one defining the relation between mass and energy. Every student attending secondary grammar schools knows it, and names Albert Einstein, as its inventor, adding that the equation is the result of Einstein’s Special Relativity Theory. However problems arise when the simply equation should be derived with Lorentz’s factor according to Special Relativity, because the factor has no upper limit when the velocity of a mass (v) nears the speed of light (c), while E=mc² has definite value.

Only a few knew, that the story of mass-energy equivalence, began with Newton in 1704, and the famous equation was derived with classical, Newtonian method in the 19^th century, well before Special Relativity was created.

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