What does a fusion reactor sound like when it's running? Does it have any parts which make distinct noise or any behaviors that you can hear?
Great question!! They scream.
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That's a view into one of the windows of the late, great Alcator C-Mod at MIT. I never had the privilege of witnessing a C-Mod discharge myself, but it went EEEEEEEEEEEEEEE.
Of course, you'd never actually be in the same room as the reactor when it's firing a pulse, what with all the neutrons and x-rays. For a lot of reactors, they actually pipe the audio from the reactor into the control room so you can hear if a loose bolt gets yote across the room by the magnets, for example.
This is from the control room of DIII-D in San Diego. Listen over the HVAC and you can hear the reactor as a kind of high-pitched, whistling hiss with a crackle of distortion from all the EM interference of the plasma discharge.
NASA art by Don Davis, 1975, showing a solar eclipse in a space colony. Earth's shadow moves up the valley as the lights of towns are seen in the distance.
(first off: I'm not an astronomer, and I may be wildly off, but…) I had always assumed that "This too was incorrect. By almost a quarter of an hour", on the first page of Good Omens, was a throwaway joke. Today I realised it might actually be a reference; was it?
AIUI, Ussher said that although the creation occurred on the autumn equinox (22 September), he gave the date as 21 October to account for the drift caused by the Julian calendar, which was in use in Ireland at that time. I think he also said that it occurred at 9am Irish time, because that's noon in Jerusalem.
What just occurred to me is that Irish civil time is calculated from the Greenwich meridian. But Ussher lived in Armagh, 6.55° west of Greenwich. The solar time in Armagh at noon in Jerusalem is 9:19am and on 21 October is 9:11am. So 9am is off by almost a quarter of an hour.
Thanks for all the happy memories and the solidarity over the years.