Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > sci.physics > #893819

Re: Positrons

Cross-posted to 3 groups.

Show all headers | View raw

On Sat, 5 Jul 2025 19:43:23 +0000, Stefan Ram wrote:

> Aether Regained <AetherRegaind@somewhere.in.the.aether> wrote or quoted:
> |                                                              The
> |evidence for the positron is a lot stronger than the evidence for say
> |quarks.

There is plenty of evidence for Harry Potter and his broomstick.
>
>   We probably shouldn't think of these particles as something out
>   there on their own. They're more like tools we came up with so
>   we could build devices that work off those ideas. So, it's really
>   about whether a certain particle actually /comes in handy/.
>
>   The positron turned out to be pretty useful. Just look at the PET
>   (Positron Emission Tomography) scanner. There's a lot of solid proof
>   that PET scanners have helped save lives by letting doctors spot
>   how diseases are moving along and see if treatments are working.

Checked that out. Looks like it works on radioactive injections and
consequent radiation. Nowhere is it said that positrons are radiated
like say beta rays.

Simply calling it pet does not prove the existence of positrons. Just as
calling fast computing quantum computing does not prove quantum theory.


>
>   (We look back now and think folks way back were clueless for
>   believing planets moved around the sun on /epicycles/. But
>   honestly, the ancient astronomers who came up with epicycles
>   - like Apollonius of Perga, Hipparchus, and especially Ptolemy -
>   didn't actually buy into that! They knew those were just /handy
>   tools/ for figuring out where the planets would be later on.)

--

Back to sci.physics | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

Re: Positrons bertietaylor@myyahoo.com (Bertietaylor) - 2025-07-06 04:27 +0000
  Re: Positrons Aether Regained <AetherRegaind@somewhere.in.the.aether> - 2025-07-08 20:00 +0000
    Re: Positrons nospam@de-ster.demon.nl (J. J. Lodder) - 2025-07-08 23:35 +0200
      Re: Positrons William Hyde <wthyde1953@gmail.com> - 2025-07-08 18:45 -0400
        Re: Positrons nospam@de-ster.demon.nl (J. J. Lodder) - 2025-07-10 23:08 +0200
    Re: Positrons Thomas Heger <ttt_heg@web.de> - 2025-07-09 07:27 +0200
      Re: Positrons Aether Regained <AetherRegaind@somewhere.in.the.aether> - 2025-07-09 19:24 +0000
        Re: Positrons Thomas Heger <ttt_heg@web.de> - 2025-07-10 09:34 +0200
      Re: Positrons bertietaylor@myyahoo.com (Bertitaylor) - 2025-07-20 22:47 +0000
        Re: Positrons Jim Pennino <jimp@gonzo.specsol.net> - 2025-07-20 18:19 -0700
        Re: Positrons "Paul.B.Andersen" <relativity@paulba.no> - 2025-07-23 15:39 +0200
        Re: Positrons Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2026-01-18 16:28 +0100
    Re: Positrons Maciej Woźniak <mlwozniak@wp.pl> - 2025-07-09 07:27 +0200
    Re: Positrons bertietaylor@myyahoo.com (Bertietaylor) - 2025-07-10 23:29 +0000
  Re: Positrons bertietaylor@myyahoo.com (Bertitaylor) - 2025-07-20 13:19 +0000
    Re: Positrons Jim Pennino <jimp@gonzo.specsol.net> - 2025-07-20 07:26 -0700
      Re: Positrons bertietaylor@myyahoo.com (Bertitaylor) - 2025-07-21 07:40 +0000
        Re: Positrons Jim Pennino <jimp@gonzo.specsol.net> - 2025-07-21 05:54 -0700

csiph-web