Erik Verlinde’s entropic gravity was claimed to explain dark matter in galaxy rotation curves as a modification to gravity similar to Modified Newtonian Dynamics MOND. But does it really work as good as MOND? Has Verlinde truly derived MOND and its acceleration scale constant from first principles?
Verlinde’s Entropic Gravity and Dark Matter Read More »
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.
Physics does not care about the WHY anymore Read More »
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?
Strange and subtle gravitational effects Read More »
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.
Machian MOND: a variable acceleration scale constant in galaxy clusters Read More »