If the cross section of metal in the projection is fractured, the heat build up will form more rapidly in the stretched material then at the workpiece interface area. This will result in the projection collapsing before fusion takes place.
  If I remember right... the very first video game was: PONG. It came out in the early to mid-70's, somewhere between 1972-1974. After that came ATARI. I know I'm right ab â¦ out the name (PONG)... the year; not so much.
The first coin-operated video arcade game, Galaxy Game, was launched in September 1971 by Bill Pitts and Hugh Tuck. However, it was beaten to the commercial market by Computer Space, launched two months later by Nolan Bushnell and Ted Dabney. In November 1972 Bushnell launched PONG for his Atari company.