I work on inkjet nozzles. One of our drops is maybe 9 nanograms. According to Wikipedia that's about 9e-9/2.5e9 = 3.6e-18. No problem, we'll start specifying o

I work on inkjet nozzles. One of our drops is maybe 9 nanograms. According to Wikipedia that's about 9e-9/2.5e9 = 3.6e-18. No problem, we'll start specifying our drop weight in atto swimming-pools.