Special Relativity kinematics in absolute space This 2D simulator implements the null-loop rules—fixed carrier speed and work-free bending as defined in the paper Motion-as-Metric: Relativity and Gravity Without Curvature Open the index.html page in a modern browser to run. Users can see contraction, dilation, and do radar ranging directly at speeds up to 0.95c 3 different views are supported, normal(fixed absolute), centered on loop(still absolute but follows) and self-relative mode.The self-relative mode compensates for time dilation (we do this by changing c_abs as if it were the update step) and contraction (pure canvas strech after draw).Due to this compensation, two way measurement times in self-relative mode take equal time in user seconds and radar rod length appears equal at any speed. Fly around with arrow keys, take two way radar measurement with space. HUD display on the left keeps last 10 measurements. Ideal measurement is 2xPi;.