This is better than any physics paper I have ever read.
BTW- I did the vacuum in a mason jar thing, don't bother. Like you noticed, the lid will deflect and you will lose vacuum. My current approach is to use a diamond bit to drill a hole in the glass lid of a canning jar (the kind with the metal snap-tight lever).
BTW- I did the vacuum in a mason jar thing, don't bother. Like you noticed, the lid will deflect and you will lose vacuum. My current approach is to use a diamond bit to drill a hole in the glass lid of a canning jar (the kind with the metal snap-tight lever).