Inertia Archives - Independent physics

Is MOND an an effect of cosmic frame-dragging à la Mach?

The origin and physical mechanism of Modified Newtonian Dynamics (MOND) is unknown. We derive the acceleration scale constant a0 and MOND’s interpolating function from a linear approximation to General Relativity which implements Mach’s principle and the relativity of acceleration, in a modified inertia model. This proof of concept motivates the possibility that MOND arises from large-scale linear inertial frame-dragging induced by the expanding universe within General Relativity.

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Physics does not care about the WHY anymore

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We are often trained to apply equations and compute correct answers without truly understanding the physical phenomena behind them. Real insight, the kind that leads to deeper intuition and meaningful thought experiments, only comes when we focus on what’s actually happening, not just on solving for the result.

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Strange and subtle gravitational effects

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General Relativity and Gravitoelectromagnetism are counter-intuitive theories in which weird gravitational effects are present. We review a selected list of the most lesser-known gravitational phenomena and briefly explain them. Which other effects could we expect from a more complete theory of gravity?

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Machian MOND: a variable acceleration scale constant in galaxy clusters

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MOND predicts galaxy rotation curves but falls short in galaxy clusters. A variable acceleration scale constant in MOND is proposed within a Machian interpretation, which predicts a boost of accelerations in galaxy clusters without the need for new constants or free parameters, in constrast to EMOND. We test the proposed formulation in a toy model and generalize the it by introducing a directionless field as a scalar sum of inverse-squared distance mass contributions. In colaboration with Juan D. Santander.

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