Engineering Explained on Youtube has some good videos on the subject:
[https://www.youtube.com/watch?v=lo7rrex0IsE](https://www.youtube.com/watch?v=lo7rrex0IsE)
[https://www.youtube.com/watch?v=pPFSR-2lhxY](https://www.youtube.com/watch?v=pPFSR-2lhxY)
[https://www.youtube.com/watch?v=IKdhgKUZhPA](https://www.youtube.com/watch?v=IKdhgKUZhPA)
[https://www.youtube.com/watch?v=QFU6uMYL2EM](https://www.youtube.com/watch?v=QFU6uMYL2EM)
[https://www.youtube.com/watch?v=tYkg0oDUXs8](https://www.youtube.com/watch?v=tYkg0oDUXs8)
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