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Message: <blockquote data-quote="Paul Farquhar" data-source="post: 9507883" data-attributes="member: 6906155">Whist I have never heard that, the weak and strong nuclear forces (along with electromagnetism) govern radioactive decay. So I suppose that is an attempt to explain something that otherwise has no discernible effect on the human scale.Decay, of course, isn't a force, or even a pseudo force. A pseudo force is still measured in newtons and can be treated as a force in certain calculations.The Coriolis force is a good one to explain what we mean. Normally, when doing sciency calculations, we treat the ground as if it were stationary. But of course this isn't true - it's on a rotating sphere. Rather than trying to redo all your calculations taking rotation and position on the Earth's surface into account, you can model the effect as an additional pseudo force. This is what causes hurricanes to spin one way in the northern hemisphere, and the opposite way in the Southern.</blockquote>