Waking up this morning, June 6th, something made myself ask the question: how many are still alive who landed in Normandy on D-Day? Unfortunately, no records are kept in a format that will help us to answer that question. But this Quora post uses demographics to arrive at around 5,000 American veterans; British and Canadian (and a few other allies) made up about half of the landing force, implying around 10,000 in total, which seems reasonable. But given their ages - mostly m
In quantum mechanics, a particle only takes on a property when it is observed. Electrons have spin, either up or down. These are distinct states – there is no middle ground. However, until the spin of the electron is observed, it does not behave as if it is actually in either state. Rather, it behaves as if it was in a strange mix of the two states put together. This is the thought experiment of Schrödinger’s Cat; we can theoretically construct a cat that is both alive and de