Stellar Gravitational Lensing

Displacement Gravity as a relation between space particles and light particles is seen in gravitational lensing.

This was explained by Descartes in the World as refraction caused by space particles (2nd Element):

The same star can often appear in different places because of the different edges that divert its rays toward the earth… This is similar to how objects are multiplied when one looks through glasses or other transparent bodies cut along several faces.

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Rene Descartes The World, Chapter 15

We notate this by adding a cohesion (vortex) term to the displacement term:

2GM / c^2 R + 2GM / c^2 R

This leads to 2 kinds of gravitational lensing:

1. Galactic Lensing

This is called macrolensing by Modern Physics.

2. Stellar Lensing

This is called microlensing by Modern Physics.

1919 Eddington Experiment

Comet Tails and Antitails

Descartes explained that comet tails and antitails are the effect of gravitational lensing within a solar system.

When the Earth is toward 2, this comet will appear in the morning with its tail seeming to precede it.

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Rene Descates Principia Philosophia, Part 3, Article 136