Gravity Visualized – lycra (spandex) gravity well
Dan Burns explains his space-time warping demo at a PTSOS workshop at Los Gatos High School, on March 10, 2012. Thanks to Shannon Range from the Gravity Probe B program for creating the original demonstration which he shared with Dan in 2004.
This Wiki article discusses the limits of such a “rubber sheet” model.
Standing Waves, Oscillators, Resonance Mode Shapes