This video is one from the PBS Space Time youtube channel - I highly recommend it. 

As the description, I'll give you the first few sentences of commentary from the video:

>One of the strangest experimental results ever observed has got to be that of the single particle double-slit experiment.
>
>It's one of the most stunning illustrations of how the quantum world is very very different from the large-scale world of our physical intuition.

If you studied this stuff at college (like I did), you'll find it a nice recap.

Alternatively, if you haven't heard of the double slit experiment before, it'll open your eyes to just how weird our existence is and why quantum mechanics is so important.

https://youtu.be/p-MNSLsjjdo

PBS Space Time youtube channel:
https://www.youtube.com/channel/UC7_gcs09iThXybpVgjHZ_7g


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