引用
最初由 aaabbbccc 发布
there's no such fundamental property called density in physics. it's defined as "matter in the volume"/volume. and by that, u do should learn from me. want some concrete result, then go measure ur lead on a neuron star.
WOW, master, what is a neuron star? A star of cells?
And does lead exist in "neuron star" (or neutron star, whatever)?
Master, how can you say density is defined as "matter in the volume"/volume without knowing it's internal structure? It is not only no such fundamental property called density in physics, actually, there's no property called density at all!!