Sunday, April 30, 2023

Extra inertia of a test charge is NOT directly proportional to its potential

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Suppose that the extra inertia of a test charge in an electric field is caused by the the energy flows it causes in the electric field. We h...
Saturday, April 29, 2023

Inertia of an expanding and contracting shell of charge in an external electric field

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In the previous blog post we studied a collapsing shell of charge. Let us now look at a related problem of a pulsating spherical shell of ch...
Friday, April 28, 2023

Inertia of a collapsing electrically charged spherical shell

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Let us analyze once again what is the inertia of a collapsing spherical shell of electric charge. The electric field of a sphere outside the...
Wednesday, April 26, 2023

Einstein-Hilbert action and extra inertia: a case study of the Sun

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Our April 14, 2023 blog post called for a detailed analysis of the inertia as well as action/reaction in the case where we have pressure ins...
Sunday, April 23, 2023

The Infeld and Schild 1949 proof of the geodesic hypothesis

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Leopold Infeld and Alfred Schild tackled the geodesic hypothesis in 1949 through studying a point particle which is a singularity in the gra...
Friday, April 21, 2023

The geodesic hypothesis in general relativity can be said to fail

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We wrote about this problem also in our November 12, 2021 blog post. Albert Einstein, Leopold Infeld, and Banesh Hoffmann (1938) tried to de...
Thursday, April 20, 2023

Retardation: a test charge "sees" the entire static electric field and the entire extra inertia

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Suppose that we have an electric charge C which is suddenly moved at a time t. In electromagnetism it is assumed that a test charge c only s...