THE SLIDE RULE
The slide rule is a logarithmic movable nomogram, used much when I went
to school and university. Its drawback is you must remember orders of
magnitude, its benefit is its intuitive display of results.
For those who wish to design sundial plates using the slide rule, here are
some notes on doing it. The process for the horizontal dial is shown, the
vertical dial being the same but co-latitude.
to school and university. Its drawback is you must remember orders of
magnitude, its benefit is its intuitive display of results.
For those who wish to design sundial plates using the slide rule, here are
some notes on doing it. The process for the horizontal dial is shown, the
vertical dial being the same but co-latitude.
