# Bounciness in Rigid Body

I tried to make up a rigid body simulation (a torus falling onto a plane) and I have tried to modify the bounciness from 0 up to 400, but I didn't observe any difference. What this parameter is supposed to do and how do I recognize the effect of the parameter ?

For example, for two objects each with a bounciness of 1.0, the result of a collision will have 1.0 x 1.0 = 1.0 (ie, all) of the energy before the collision. If either is zero then the result will be zero energy of their initial motion after the collision. For in-between values, the same holds - eg, if both have Bounciness of 0.8 then 0.8 x 0.8 = 0.64 of the energy will remain after the collision - ie, a ball would bounce 64% of the way back up from its starting height if it fell onto the surface.