It's pretty simple:
1) Spray face of Billiards table with a pressure sensitive paint.
No pressure and the paint stays green. Apply pressure and the paint changes yellow for a moment or two.
2) Play pool, and admire the cool lines that trace your shot, and liven up the table.-- swimr, Sep 09 2008 You could use this stuff http://jockimo.com/prod-livingfloor.htmlThough I think the weight of the balls won't be enough... [theleopard, Sep 09 2008] You might do it with the video of the shot.-- neelandan, Sep 09 2008 neelandan, how do you mean?-- swimr, Sep 10 2008 Aim a video camera at the table. Process the video signal by computer to add trails behind the balls as described.
Each ball could be programmed to have its own coloured trail.-- neelandan, Sep 11 2008 \ ..\ ...\ ....\ ....(+) ...../\ ..../...\ .../......\ (+)........(+)-- 2 fries shy of a happy meal, Sep 11 2008 random, halfbakery