Any frequency of orthogonal streets produces the same packing effect.
2.
Similarly, if one wishes to estimate the density of an alloy given the densities of its constituent elements and their mass fractions ( or, equivalently, percentages by mass ), then the predicted density of the alloy ( exclusive of typically minor volume changes due to atom packing effects ) is the weighted harmonic mean of the individual densities, weighted by mass, rather than the weighted arithmetic mean as one might at first expect.
मोबाइल