iSlideRule Scales - P| "P"
Scales |
|
| Ps |
The Ps (formerly the P scale in earlier
versions of iSlideRule) scale (also known as the Pythagorean
scale) is normally found on the top or bottom rule, but may
also be on the slide, and when used with the D and A scales
(or C and B scales) can calculate √(1 - s²), or with the S
scale, a more accurate calculation of the cosine of small
angles. Scale ranges from 0.995 to 0.0. Formula: Ps = √(1 - s²) |
| Pt |
The Pt scale, another Pythagorean scale) is normally
placed close by the Ps scale. This scale calculates
√(1 + t²). The scale ranges from 0.0 to 10. |