Re: Light into Darkness : Wingate
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I uploaded the scales of Wingate into a folder:
I think I understand now the folded scale to a certain extent.
The scale arrangement of the first scales is: D K DF A aTan(A) aSin(A) lg(D)
The DF scale is folded by sqrt(10).
D can be used by K to read the cubicroot (without compasses!) with K
interpreted the common way from 1...1000 and D from 1...10.
DF can be used to read (without compasses) the sqareroot from A with DF
being interpreted from 1/sqrt(10) to sqrt(10) and A interpreted from 0.1
to 10. That is now what somehow looks strange, to interpret A from 0.1
to 10 instead of 1 to 100. But why not. For sin and tan however A again
is interpreted from 0.01 to 1 as on Mannheim compatible rules.
I wonder whether Wingate published this scale layout also in France, and
whether this may be the reason how they came to the Beghin rules by
using "sliding wingates" first.
Am 04.05.2020 um 21:56 schrieb Andreas Poschinger: