But 2.5 × 10-25 Kg is literally the weight of a single atom, which is too small a difference to measure in bulk. https://en.wikipedia.org/wiki/Orders_of_magnitu

But 2.5 × 10-25 Kg is literally the weight of a single atom, which is too small a difference to measure in bulk. https://en.wikipedia.org/wiki/Orders_of_magnitude_(mass)#The_least_massive_things:_below_10%E2%88%9224_kg https://en.wikipedia.org/wiki/Orders_of_magnitude_(mass)#The...