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 generation of video game consoles began in 1972 with the Magnavox Odyssey (which began development in 1968 by Ralph Baer under the code name The Brown Box), until 1977, when pong-style console manufacturers left the market en masse due to the video game crash of 1977 and when microprocessor-based consoles were introduced.