4 ms·
I held a neptunium (20.45 g/cc) sphere once. It was about the size of a baseball and I hard the hardest time lifting it. It was like lifting a full gallon jug o
by Cous_Cous_Cous 5y ago
I held a neptunium (20.45 g/cc) sphere once. It was about the size of a baseball and I hard the hardest time lifting it. It was like lifting a full gallon jug of milk when you think it's empty - you apply a force and it doesn't budge. I had to lift it as if I was lifting a stack of books to get it off the pedestal.
- ISL 5y agoWas it warm? That was a rare experience; not many people will have done so.
- deleted 5y ago[deleted]
- mensetmanusman 5y agoUranium is the heaviest naturally occurring on earth, so after that on the periodic table (uranium, neptunium, plutonium…) things are made with collisions in the lab. I bet a lot of energy went into creating that sphere…
- the8472 5y agoosmium is denser than uranium, the issue is that it's quite expensive.
- kadoban 5y agoI'm quite curious what the circumstances of that would have been. I looked it up because I thought I was mistaken, but ya: it's nuclear reactor byproduct and itself capaple of being turned into a nuclear weapon (or only some isotopes maybe? Not sure). It also apparently is capable of just starting on fire in open air, is poisonous, radioactive obviously and accumulates in the bones. Sounds like fun stuff.