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.
If I hadn't done it, someone would've done something equally exciting if not better in the next six months. It was in 1962 when a young computer programmer from MIT, Steve Russell (fueled with inspiration from the writings of E. E. Doc Smith*), created the first computer video game.