Note: Pictures 2 and 6 were taken from The Feynman Lectures on Physics including Feynman's Tips on Physics: The Definitive and Extended Edition (Hardcover) .... if you are interested in learning more about Feynman and his physics lectures, then perhaps you might want to buy the book or rent it from the local library :-)
The other pictures were taken from online and the handwritten flow field calculations were scanned into the computer.
