Feature Numerical Value Great Pyramid Sidereal 365.2564 days Base of pyramid in pyramid year inches Solar year 365.2599 days True base plan of Pyramid Processiona ~27,000 years Pyramid provides all l cycle information for 6,000 years Pi

3.14159....

Pi, most commonly approximated as

3.14159, is an irrational number,and not even the most powerful computers WILLIAMS ot putplayed have managed to calculate its exact value.

where [mu] is the mean, [sigma] is the standard deviation of the distribution, and [pi]the well--known constant ([pi] =

3.14159...).

Pi, which is represented by the Greek letter "?", is the symbol used in mathematics to represent a constant - the ratio of the circumference of a circle to its diameter - that is approximately

3.14159.

O* IFLscience.com has fascinating bits, including "21 GIFs that explain mathematical concepts.'' For instance, did you know that the number Pi (

3.14159 etc.), is equal to the distance traveled by rolling a wheel exactly one revolution?

the Greek letter that represents a sequence of never-ending numbers, starting from

3.14159.

Last year Google put

3.14159 million dollars in the contest, but paid out just 40,000 dollars to a prolific hacker who goes by "Pinkie Pie," the contest's sole participant, for what Google later called a partial exploit.

The ratio is

3.14159 plus, or as commonly used, 3.1416 plus.

To a mathematician, pi is pi, never "

3.14159." Pi is much more exact, and a mathematician can live in a world of exactness, but an engineer in the real world cannot be as precise.

It begins

3.14159 and then continues for perpetuity in disarray, obeying no order and following no pattern.

Pi - approximately

3.14159 - is calculated by dividing the circumference of a circle by its diameter.

(21) Input = 1 + STEP (step height, step time)+ (pulse quantity/TIME STEP)\times PULSE (pulse time, TIME STEP)+ RAMP (ramp slope, ramp start time, ramp end time) + sine amplitude \ times SIN (2 \times

3.14159 \times time/sine period) + STEP (1, noise start time) \times pink noise Units: dimensionless

Normal blood flow is proportional to the fourth power of the vessel radius (Poiseuille's law: Q=([DELTA]P[pi]r4)/(8[eta]l), where Q is the volumetric blood flow rate; [DELTA]P is the driving pressure drop; [pi] is the mathematical constant, approximately

3.14159; r is the vessel radius; [eta] is the dynamic viscosity; and l is the length of the vessel).