for measuring spheres, calipers are most accurate. I was just seeing how close a gereral measure for an egg could get. besides my measuring cups are marked at 10ml. hard to see the miniscus through that plastic. plus you can't tilt the cup to rad accurately. totally flat. have to get on your...
yes it is complex to calculate with two ends having different radius. I've meaured about 40 eggs and compared the rule of thumb measurement with actual weight, and different shaped eggs still hold close to the same rule. It was just an exercise for myself sitting in my recliner listening to...