Hello:

In Part A, the core idea behind the space-times-time invariance as gravity was detailed. When one treats events as a 4-vector, the contraction of that 4-vector generates one number. When one treats events as quaternions, the square of a quaternion generates 4 numbers. If for two observers, the first number in the square is identical while the other three (I call space-times-time) are different, then the two observers are moving at a constant velocity relative to each other. The space-times-time proposal is exploring the case where the observers disagree about the interval, but have the same space-times-time.

In this blog, I will again define the space-times-time invariance proposal using simple graphics, an explanation intended for a wider audience, videos, and information for nerds. It is taken directly from my own web site that has nearly exactly the same information. In Part B, the equations of motion will be derived, something technical people would reasonably ask for.

An Overview

[Note: many of the images were upgraded to include more information about addition and multiplication, 10/25/2015]

What is a quaternion? Mathematicians might claim it was the independent inventions of Gauss, Hamilton, and Rodrigues. Unit quaternions are useful to do 3D rotations and as an esteemed member of the standard model. They are also one of many Clifford algebras, Cl(0, 2) being its formal name.