Sentences with phrase «dense rubber material»

Not exact matches

But early this year, Princeton materials scientists Steven Atkinson, Frank Stillinger and Salvatore Torquato found significantly less dense configurations by pushing the pennies together as if they were on a shrinkable pad of rubber rather than a rigid table, until reaching the «no closer» point.

They are inexpensive, and available in hard plastic, dense rubber or synthetic leather material.

The shell can be made from many materials, including nylon, vinyl, leather, dense rubber, or polyurethane, and the insides are often stuffed with sand, gel, or just inflated with air.