A previous version of this article misstated the type of resistance employed by the Hydrow rowing machines we review here. The Hydrow machines use electromagnetic resistance, not magnetic ...

Ping pong balls are placed in an air-blown lottery machine that produces a ball labeled with a number every 15 seconds. Four balls are collected to create a four-digit code corresponding to a ...

For the drawing, a set of ping-pong balls numbered 1-14 are placed in a lottery machine. Four lottery balls are then drawn, and the team with that combination wins the No. 1 pick. The process is ...