Air hockey

Common card · No. 378542

Air hockey is a tabletop sport where two opposing players try to score goals against each other on a low-friction table using two hand-held discs (mallets/pushers) and a lightweight plastic puck. The air hockey table features raised edges that allow the puck to rebound horizontally—governed by the rule that the angle of incidence equals the angle of reflection. Furthermore, the exceptionally smooth surface virtually eliminates friction by suspending the puck on a thin cushion of air ejected from tiny vent holes. This allows the puck to hover and glide effortlessly with minimal velocity loss, simulating a lubricated ice hockey puck on a polished rink, which gives the game its name.

Read on Wikipedia · Image Andrew Flanagan. (The original uploader was Cgros841 at English Wikipedia. Later version(s) were uploaded by Splitsecond at en.wikipedia)., Public domain