Easy way to remember pi

  • Thread starter gary350
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  • #26
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No need! Just remember the fundamental theorem of Physics,$$\pi = e = \sqrt{g}$$
e = energy?

g = gravity?
 
  • #27
etotheipi
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$$e = \sum_{n=0}^\infty \frac{1}{n!} = \lim_{m\rightarrow \infty} \left(1+ \frac{1}{m} \right)^m \approx 2.718281828459045$$whilst ##g## is the gravitational field strength on the Earth's surface, which as pointed out by @Infrared must in this case be the dimensionless value of that quantity when expressed in the SI, to maintain dimensional homogeneity.

I might take this opportunity to mention that, in case anyone didn't notice, the fundamental theorem of Physics isn't particularly fundamental. Or a theorem, for that matter.
 
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  • #28
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e = energy?

g = gravity?
e is the Euler number, the base of the natural logarithm
g is the acceleration due to gravity (about ##9.81 \frac{\text m}{\text{sec}^2}## or about ##32.2 \frac{\text {ft}}{\text{sec}^2}##)
 
  • #29
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There's an old poem about it.

Sir, I bear a rhyme excelling
In mystic verse and magic spelling
Celestial sprites elucidate
All my own striving can't relate

Just count the letters in each word.
 
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  • #30
DennisN
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I remember how to press π on my calculator. Pi is ca 3 if my memory serves me.
 
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  • #31
Astronuc
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I prefer this one
 

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