Brodetsky, Selig, 1888-1954 · London, G. Bell and Sons, Ltd. · leaf 30
ADDITION AND 12 a slight modification, which we shall illustrate" by reference to one or two simple cases. InJFig. 7 the scales a, b, x, y are all graduated in exactly the same way^ but the scale x is midway … between scales a, b, and the scale y is twice as far from a as it is from b. Let a line cut all the four scales. It is easy to show that twice distance x= distance a + distance b, 3 times distance y = distance a + twice distance b.
Nomography (Mathematics)
Internet Archive · University of California Libraries · Public domain (published before 1931). Free to use for anything.
