Assuming strings are real, how many would fit in a drop of water? Perhaps this is a basic math question, or that the question itself does not make sense given the hypothetical and (currently) unobservable nature of strings. According to: http://en.wikipedia.org/wiki/Orders_of_magnitude_(length [Broken]) a drop of water is 10^ -5 meters and the planck length is 10^ -35 meters. So (10^-5-(-35))^3 = 10^90: A one with 90 zeros? Would this be a relatively accurate ballpark number of strings fitting inside a particle of water?