Virtual reality has a long history and its roots are slightly different from how the concept is perceived today. The crucial characteristic that never changed, despite time and evolution, is to mak...
Silica gel alias: Silicic acid gel, is a highly active adsorption material. The main component is silica, which is chemically stable and does not burn.
Slow rebound refers to the ability of a material to deform slowly. After being deformed by an external force, it will slowly return to its original shape. In another word, the material has the char...