P3D Paper Base-Calculator impossible

[Tom Deering <tmd@xxxxxxxxxxx>]

>This puny condition makes me even more anxious to see the analog slide
>rule idea in operation, so I hearby offer the Springsteen Prize.
>The first person to devise and demonstrate to me a straight or
>circular slide-rule-type device which allows stereo base calculation
>that does not violate the basic rules of Bercovitz/Spicer; which uses
>no electricity, steam, gas or other non-human-power source; and which

I want that coveted Springsteen Prize, but I think it's impossible.  I've
been playing around with a math toy called a nomogram, which is probably
too complex to be called a slide rule.  But even then, I can't make it work.

The problem is, there's no way to fit the five parameters on some sliding
sticks. Two or three, yes.  Five, no.  Your regular round two-paper-disk
computers are only comparing three parameters.  (Top ring, bottom ring,
window.)  You could get four with a column of numbers rather than a window,
but that's it.  Not enough dimensions.

No, okay, I've got it. But can the circle be 12" wide?  Okay, forget it.

Wait, I've got it.  If you could live with a handful of paper calculators,
I could do it.  One for each focal length. 35mm ,40mm, 45mm, 50mm, 55mm,
60mm, 65mm, 70mm? And a foot wide?

Cheers,

Tom



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