pi

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  • noun

Words related to pi

the ratio of the circumference to the diameter of a circle

the scientist in charge of an experiment or research project

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the 16th letter of the Greek alphabet

References in periodicals archive ?
Pi has always been 3.1416, or 3.14159265359 if you want to be more precise.
TCSA was calculated according the following formula: TCSA= [pi].[r.sup.2], where [pi]= 3.1416 and r (radius) = d/2, where d = trunk diameter.
We can conceive that heat is not molecular motion; we can conceive that the sun is a god, that [pi] is not 3.1416, and so on.
Boundary conditions Input parameters [r.sub.i] 1.0313 DU [N.sub.rev] 2 [[theta].sub.i] 0 rad [n.sub.r] 5 [r.sub.f] 6.61 DU [n.sub.[theta]] 5 [[theta].sub.f] 3.1416 rad [THETA] 15.708 rad [[??].sub.i] 0 DU/TU [N.sub.nod] 251 [[??].sub.i] 0.9565 rad/TU [[??].sub.f] 0 DU/TU [[??].sub.f] 0.05884 rad/TU Table 4: Simulation results using different initial guesses in the LEO-GEO case.
The average area of each wound was calculated as [pi](diameter A/2) x (diameter B/2), where [pi] is 3.1416; A and B represent diameters at right angles to each other.
nth zero [j.sub.0](x) [j.sub.1](x) [j.sub.2](x) 1 3.1416 4.4934 5.7635 2 6.2832 7.7253 9.0950 3 9.4248 10.9041 12.3229 4 12.5664 14.0662 15.5146 5 15.7080 17.2208 18.6890 nth zero [j.sub.3](x) [j.sub.4](x) [j.sub.5](x) 1 6.9879 8.1826 9.3558 2 10.4171 11.7049 12.9665 3 13.6980 15.0397 16.3547 4 16.9236 18.3013 19.6532 5 20.1218 21.5254 22.9046
The wedge-shaped areas of vessel growth were then calculated in the photos using Image-Pro Plus with the following formula: A = C/12 x 3.1416 x [[r.sup.2] - [(r - l).sup.2]], where A is the area, C is the number of clock hours of limbus involvement, l is the length of the longest neovascular pedicle from the limbus onto anterior cornea, and r is the radius of the cornea [24].
The ratio is 3.14159 plus, or as commonly used, 3.1416 plus.