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Groups > uk.comp.sys.mac > #181819

Re: MacBook double problem

From Graham J <nobody@nowhere.co.uk>
Newsgroups uk.comp.sys.mac
Subject Re: MacBook double problem
Date 2025-09-04 09:39 +0100
Organization A noiseless patient Spider
Message-ID <109bj8v$1lhui$1@dont-email.me> (permalink)
References (2 earlier) <1ri3rq6.eayoa7rbjfxaN%liz@poppyrecords.invalid.invalid> <109adaa$1dj2l$1@dont-email.me> <1ri4lyr.scv0gtprvjpuN%liz@poppyrecords.invalid.invalid> <109beom$1kil7$1@dont-email.me> <1ri4nma.18v00lp1yqdwlcN%liz@poppyrecords.invalid.invalid>

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Liz Tuddenham wrote:
> Graham J <nobody@nowhere.co.uk> wrote:
> 
> [...]
>> == Ask the hall to provide a camera system that will work with their
>> projector;
> 
> I've already asked: not a chance.
> 
> 
>> == Use your own projector and your OS9 machine if it has a built-in camera;
> 
> The PowerBook doesn't have a camera and it will be fully occupied with
> the presentation slides, which are intended to be seen at the same time
> as the demonstration.  Basically, I have a mimic diagram board of a
> thermionic valve circuit (with a real valve in the middle of it), I can
> wind various voltages up and down and demonstrate how the valve behaves.
> The voltages and currents are displayed on meters fixed in the
> appropriate positions on the board.  The ClarisWorks Slide Show will be
> displaying pre-drawn curves of the results (let's hope the results on
> the night agree with the curves!).
> 
> The board is about A4 size and the biggest meters I could get still have
> narrow pointers, which are difficult to see from any distance.  If I
> only get an audience of a dozen, I shall be able to cope by arranging
> them in a couple of concentric semicircles but if more turn up, they
> won't be able to see properly.

Warn the audience to bring opera glasses!

I remember thermionic valves!  What are you using in your demo? 
Something tiny like the ECC88? Or EL34? Or a transmitter valve such as 
the 807?

-- 
Graham J

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Thread

MacBook double problem liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-03 20:24 +0100
  Re: MacBook double problem Graham J <nobody@nowhere.co.uk> - 2025-09-03 20:35 +0100
    Re: MacBook double problem liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-03 21:05 +0100
      Re: MacBook double problem "David B." <BD@hotmail.co.uk> - 2025-09-03 21:38 +0100
      Re: MacBook double problem Graham J <nobody@nowhere.co.uk> - 2025-09-03 22:52 +0100
        Re: MacBook double problem liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-04 08:12 +0100
          Re: MacBook double problem Graham J <nobody@nowhere.co.uk> - 2025-09-04 08:22 +0100
            Re: MacBook double problem liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-04 08:43 +0100
              Re: MacBook double problem David Sankey <David.Sankey@stfc.ac.uk> - 2025-09-04 09:33 +0100
              Re: MacBook double problem Graham J <nobody@nowhere.co.uk> - 2025-09-04 09:39 +0100
                Re: MacBook double problem liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-04 16:08 +0100
                Re: MacBook double problem Graham J <nobody@nowhere.co.uk> - 2025-09-04 16:55 +0100
          Re: MacBook double problem Chris <ithinkiam@gmail.com> - 2025-09-05 08:05 +0000
            Re: MacBook double problem liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-05 11:08 +0100
              Re: MacBook double problem David Sankey <David.Sankey@stfc.ac.uk> - 2025-09-05 16:48 +0100
                Re: MacBook double problem liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-05 19:18 +0100
                Re: MacBook double problem Chris <ithinkiam@gmail.com> - 2025-09-06 08:11 +0000
                Re: MacBook double problem liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-06 09:19 +0100
                Re: MacBook double problem David Sankey <David.Sankey@stfc.ac.uk> - 2025-09-06 14:16 +0100
                Re: MacBook double problem liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-08 15:06 +0100
                Re: MacBook double problem - followup liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-10 08:45 +0100
                Re: MacBook double problem - followup Graham J <nobody@nowhere.co.uk> - 2025-09-10 10:26 +0100
                Re: MacBook double problem - followup liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-10 11:20 +0100
                Re: MacBook double problem - followup David Sankey <David.Sankey@stfc.ac.uk> - 2025-09-11 16:07 +0100
                Re: MacBook double problem Chris <ithinkiam@gmail.com> - 2025-09-06 18:30 +0000
              Re: MacBook double problem Graeme Wall <rail@greywall.demon.co.uk> - 2025-09-06 08:17 +0100
                Re: MacBook double problem Alan B <alanrichardbarker@gmail.com.invalid> - 2025-09-06 07:27 +0000
                Re: MacBook double problem liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-06 09:19 +0100
                Re: MacBook double problem Phil Taylor <nothere@ail.invalid> - 2025-09-06 10:24 +0000
  Re: MacBook double problem "David B." <BD@hotmail.co.uk> - 2025-09-03 20:42 +0100
  Re: MacBook double problem liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-18 21:57 +0100
    Re: MacBook double problem "David B." <BD@hotmail.co.uk> - 2025-09-18 22:36 +0100
    Re: MacBook double problem Mark <captain.black@gmail.com> - 2025-09-18 21:54 +0000
      Re: MacBook double problem Alan B <alanrichardbarker@gmail.com.invalid> - 2025-09-19 06:45 +0000
        Re: MacBook double problem Mark <captain.black@gmail.com> - 2025-09-19 10:42 +0000
          Re: MacBook double problem Alan B <alanrichardbarker@gmail.com.invalid> - 2025-09-19 11:33 +0000
            Re: MacBook double problem Mark <captain.black@gmail.com> - 2025-09-19 20:54 +0000
              Re: MacBook double problem Alan B <alanrichardbarker@gmail.com.invalid> - 2025-09-20 07:49 +0000
                Re: MacBook double problem Mark <captain.black@gmail.com> - 2025-09-20 19:38 +0000
                Re: MacBook double problem Mark <captain.black@gmail.com> - 2025-09-20 19:50 +0000
                Re: MacBook double problem Alan B <alanrichardbarker@gmail.com.invalid> - 2025-09-20 19:53 +0000
      Re: MacBook double problem liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-19 12:22 +0100
        Re: MacBook double problem Mark <captain.black@gmail.com> - 2025-09-19 11:31 +0000

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