Why is gravity non-linear? We explore the non-linear consequences of General Relativity such as the perihelion shift of Mercury, and other tests such as light bending, and how they relate to linear Newtonian theory. How can a Machian theory unifying inertia and gravity be relativized? MOND is neccesarily non-linear by observations. What does this tell us about it?
Why Gravity is Non-Linear Read More »
Newtonian cosmology is problematic, as Seeliger’s paradox shows. We summarize Norton’s review on the topic, including Einstein’s forgotten ideas of the divergence of the metric at infinity, its relationship with Mach’s principle and MOND, and Norton’s preferred solution of the relativity of acceleration.
Seeliger’s paradox & Einstein’s forgotten cosmology Read More »
Newtonian gravity cannot explain galaxy dynamics and their rotation curves. But can General Relavity explain them? We explore the linear approximation of General Relativity (gravitomagnetism) and apply it the orbits of stars in galaxies. The question of whether boundary conditions can play a role in explaining the dark matter effects in galaxies is also addressed.
How General Relativity fails to explain Galaxy Dynamics Read More »
We briefly share our opinion on Mike McCulloch’s Quantized Inertia theory regarding the dark matter effect in galaxy rotation curves and MOND, and its problem regarding high redshift galaxy rotation curves.
The Problems of Quantized Inertia Read More »