iSlideRuleHD Scales - J
"J" Scales
J
The J scale is a cube scale, raising values from the C scale to the third power, or taking the cube root of a value on the J scale reading the root from the C scale.  This scale is located on the slide, and used with the C scale.

Formula: J = X³
JI
The JI scale is reciprocal cube scale, located on the slide and used with the C scale.

Formula: JI = 1 / X³

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