Comments by "Dr Gamma D" (@DrDeuteron) on "The hardest engineering challenge | Barry Barish and Lex Fridman" video.

  1. He's particle physicists and started with little expertise in Mech-E or gravitation...basically got a Nobel Prize for saving the project from disorganization.
    3
  2. The vacuum is 1 trillionth of an atm, so a cubic millimeter of air (the size of a poppyseed) will destroy it. Basically the air molecules bouncing off the 40 kg mirrors knocks them around much more than a gravitational wave.
    1