My high school chemistry teacher said that there is no such thing as a “vacuum,” it’s just a difference in air pressure. But you always hear about the “vacuum” of space, or when something is “vacuum-sealed.” I am not scientifically inclined, so I don’t even know where to begin. Im also not sure if “physics” is the correct flair lol. I was wondering if it could be explained from either side of the argument.
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I think the vacuum of space is called that because there isn’t anything in it. There is nothing to give pressure. Especially in deep space. No gravity, no atmosphere weighing on you of any sort. It’s just empty nothing.
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