Why does gravity change

Researcher: The earth's magnetic field influences gravity

The greatest challenge in physics at the moment is the unification of all basic physical forces in a single theory. Many of the prototypes of this sought-after “theory of everything” predict an interaction between the gravitational force and the electromagnetic force. The two French physicists have now worked out a variant of a prototype of this “theory of everything”.

According to this, the gravitational force on earth is a little greater where the earth's magnetic field is stronger. The researchers then applied their theory to measurements of gravitational constants that had been carried out in various laboratories around the world over the past sixty years. From the known longitude and latitude coordinates of the laboratory locations, the two French calculated the strength of the earth's magnetic field there and from this value in turn the value of the gravitational force predicted by their theory. Result: The deviations of the gravitational constants, which were previously considered measurement errors, were well predicted by their theory.

Another prediction of the French theory is that the influence of magnetic fields on gravity decreases with increasing temperature. In fact, astronomers who perform model calculations on the interior of the Sun need a slightly lower value for the gravitational constant in order to get plausible results.

In addition, Mbelek and Lachieze-Ray point out that their theory predicts a change in the fine structure constants. The fine structure constant determines the strength of the electromagnetic force. There is some evidence that this constant has slowly changed in value since the creation of the universe. bdw reported about it.

September 25, 2002

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