Leibniz's Formula for Pi/Historical Note

Historical Note on Leibniz's Formula for Pi
discovered his formula for $\pi$ in $1673$.

He took great pleasure and pride in this discovery.


 * It's as if, by this expansion, the veil which hung over that strange number had been drawn aside.

Simple as it is, Leibniz's Formula for Pi is inefficient, in that it needs hundreds of terms in order to calculate a few decimal places.

Some sources ascribe this formula to.