From a current exhibition on child labor in the swiss national museum.

  • altphoto@lemmy.today
    12·
    7 days ago

    Wait! They were lasers? How many watts? Was their mode good? Were they DC lasers or high power peak to peak lasers! So many questions! Was their M^2 acceptable? How about polarization… Oh my God! They made cotton lase!!! Could they make other solids lase back in the day? Wood? Stone!?