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Science & Reason on Facebook: tinyurl.com Physics (Chapter 4): The Famous Double Slit Experiment – The Strangeness Of Quantum Mechanics. — Subscribe to Science & Reason: • www.YouTube.com • www.YouTube.com • www.YouTube.com • www.YouTube.com — We now examine a phenomenon, which is absolutely impossible to explain in any classical way, and which is at the very heart of quantum mechanics; the famous double slit experiment. To understand this experiment we first need to see how ordinary particles, or little balls of matter, act. If we shoot small objects, such as marbles, at a screen containing a single slit, we see a pattern form where they went through the slit and hit on the back wall. Now, if we add a second slit we would expect to see two bands directly behind the slits. Now, lets look at waves. The waves hit the slit and radiate out striking the back wall with the most intensity directly in line with the slit. The line of brightness on the back screen shows that intensity. This is similar to the line the marbles make. But, when we add the second slit, something different happens. If the top of one wave meets the bottom of another wave, they cancel each other out. So now, there is an interference pattern on the back wall. Places where the two tops meet are the highest intensity, the bright lines, and where they cancel, there is nothing. So, when we shoot particles, such as matter, through two slits, we get this. Two bands of hits. And, with waves we get an <b>…</b>
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