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.
Video games transitioned into a new era in the early 1970s with the launch of the commercial video game industry with the display of the coin-operated arcade game Galaxy Game and the release first widely available arcade game Computer Space , and then in 1972 with the release of the immensely successful arcade game Pong and the first home video game ...