Apparently David Hahn used the radium paint from old clocks to make a neutron gun for irradiating his DIY nuclear reactor. If you haven't heard about that, it's a remarkable story about a precocious kid who could put…
Apparently David Hahn used the radium paint from old clocks to make a neutron gun for irradiating his DIY nuclear reactor. If you haven't heard about that, it's a remarkable story about a precocious kid who could put…