• Fun physics writeup

    From Jan Panteltje@21:1/5 to All on Wed Jun 12 05:07:20 2024
    Neutrinos: The inscrutable “ghost particles” driving scientists crazy
    They hold the keys to new physics. If only we could understand them.
    https://arstechnica.com/science/2024/06/neutrinos-are-infuriating-but-we-still-have-to-study-them/

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  • From Bill Sloman@21:1/5 to Jan Panteltje on Wed Jun 12 16:57:42 2024
    On 12/06/2024 3:07 pm, Jan Panteltje wrote:
    Neutrinos: The inscrutable “ghost particles” driving scientists crazy They hold the keys to new physics. If only we could understand them.
    https://arstechnica.com/science/2024/06/neutrinos-are-infuriating-but-we-still-have-to-study-them/

    They aren't driving anybody crazy. But claiming that they were was a
    neat way of structuring a popular science progress report.

    Jan Panteltje isn't a sophisticated reader, and still has hopes the the neutrino - or a neutrino - might work as Le Sage's famous mechanical explanation of gravity.

    --
    Bill Sloman, Sydney


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  • From john larkin@21:1/5 to All on Wed Jun 12 08:31:24 2024
    On Wed, 12 Jun 2024 05:07:20 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    Neutrinos: The inscrutable “ghost particles? driving scientists crazy >They hold the keys to new physics. If only we could understand them.
    https://arstechnica.com/science/2024/06/neutrinos-are-infuriating-but-we-still-have-to-study-them/

    Remember this?

    On 12 November 2001, about 6,600 of the photomultiplier tubes (costing
    about $3000 each[13]) in the Super-Kamiokande detector imploded,
    apparently in a chain reaction or cascading failure, as the shock wave
    from the concussion of each imploding tube cracked its neighbours.

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  • From Cursitor Doom@21:1/5 to john larkin on Wed Jun 12 17:26:20 2024
    On Wed, 12 Jun 2024 08:31:24 -0700, john larkin wrote:

    On Wed, 12 Jun 2024 05:07:20 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    Neutrinos: The inscrutable “ghost particlesâ€? driving scientists >>crazy They hold the keys to new physics. If only we could understand
    them.
    https://arstechnica.com/science/2024/06/neutrinos-are-infuriating-but- we-still-have-to-study-them/

    Remember this?

    On 12 November 2001, about 6,600 of the photomultiplier tubes (costing
    about $3000 each[13]) in the Super-Kamiokande detector imploded,
    apparently in a chain reaction or cascading failure, as the shock wave
    from the concussion of each imploding tube cracked its neighbours.

    "[13]" ?

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  • From Bill Sloman@21:1/5 to john larkin on Thu Jun 13 17:59:02 2024
    On 13/06/2024 1:31 am, john larkin wrote:
    On Wed, 12 Jun 2024 05:07:20 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    Neutrinos: The inscrutable “ghost particles� driving scientists crazy
    They hold the keys to new physics. If only we could understand them.
    https://arstechnica.com/science/2024/06/neutrinos-are-infuriating-but-we-still-have-to-study-them/

    Remember this?

    On 12 November 2001, about 6,600 of the photomultiplier tubes (costing
    about $3000 each[13]) in the Super-Kamiokande detector imploded,
    apparently in a chain reaction or cascading failure, as the shock wave
    from the concussion of each imploding tube cracked its neighbours.

    It seems improbable than any individual tube imploding could have
    cracked any of it neighbours. The tubes are quite a way apart. It sounds
    more like an external shock going through and persuading a number of
    individual tubes to implode close enough together to amplify the initial external shock into a more intense plane wave that could collapse even
    more of those along its path.

    http://hyperphysics.phy-astr.gsu.edu/hbase/Particles/kamio.html

    In reality, it happened during a maintenance operation while the tank
    was partly empty to allow some burnt-out tubes to be replaced.

    Some 5200 tubes survived the incident, so John's description is
    inaccurate and somewhat misleading.

    --
    Bill Sloman, Sydney



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  • From john larkin@21:1/5 to cd999666@notformail.com on Thu Jun 13 06:31:10 2024
    On Wed, 12 Jun 2024 17:26:20 -0000 (UTC), Cursitor Doom <cd999666@notformail.com> wrote:

    On Wed, 12 Jun 2024 08:31:24 -0700, john larkin wrote:

    On Wed, 12 Jun 2024 05:07:20 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    Neutrinos: The inscrutable ??ghost particles?? driving scientists
    crazy They hold the keys to new physics. If only we could understand >>>them.
    https://arstechnica.com/science/2024/06/neutrinos-are-infuriating-but- >we-still-have-to-study-them/

    Remember this?

    On 12 November 2001, about 6,600 of the photomultiplier tubes (costing
    about $3000 each[13]) in the Super-Kamiokande detector imploded,
    apparently in a chain reaction or cascading failure, as the shock wave
    from the concussion of each imploding tube cracked its neighbours.

    "[13]" ?

    The text is from wikipedia.

    https://en.wikipedia.org/wiki/Super-Kamiokande

    Even breaking one PMT is a distressing event.

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