> one way we do nuclear weapon containment is by lying about certain properties of Uranium (and of course mostly lie about lying, and of course, most researchers don't think it's particularly effective.
It sounds to me like GP is hinting that the rate of particle emission for a given mass of uranium (maybe just the more fissile U-235?) is deliberately misreported in the literature. The way people originally determined that value experimentally was to count the light flashes produced over a period of time by a source of ionizing radiation placed at one end of a vacuum tube. I'm not a physicist, so hopefully someone can correct me if I'm barking up the wrong tree here.
What is being lied about, and what is its truth?