Models the physics of bouncing balls, or of particles in a gas or fluid, depending on the settings. If "Shake Box" is selected, then every now and then, the box will be rotated, changing which direction is down (in order to keep the settled balls in motion.) Written by Peter Birtles and Jamie Zawinski; 2002.
Déanann sé seo insamhladh ar fhisic liathróidí léimneacha, nó ar cháithníní i ngáis nó i sreabhán, ag brath ar na socruithe. Má tá "Croith an Bosca" roghnaithe, rothlófar an bosca anois is arís, chun na liathróidí gan chorraí a chur ar siúl arís.