Browser Applications

Stars orbiting the galactic center black hole

Based on the dataset published by Gillessen et al. in ,,An Update on Monitoring Stellar Orbits in the Galactic Center'' [ApJ 837,30 (2017)], this animation shows the orbits of the S-stars orbiting the galactic center black hole.

Kepler's Second Law

A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time.

(in german only)

Minkowski Diagram

Coordinates of an event with respect to a reference frame at rest and a reference frame moving with a velocity close to the speed of light.

(in german only)

Twin Paradox

The travelling twin moves with constant acceleration.

(in german only)

Effective potential of a light ray in Schwarzschild spacetime

(in german only)

Effective potential for timelike geodesics in Schwarzschild spacetime

(in german only)

Deflection of light in Schwarzschild spacetime

(in german only)

Geodetic precession around Schwarzschild spacetime

(in german only)

Double Pendulum

Simulation of a double pendulum. There is also an Android implementation: here.

Analog Clock

Just for testing svg elements and JavaScript.