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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Yes, the vacuum in space and the vacuum sealed stuff is low air pressure. You can call it micro-pressure if you like.
There is vacuum in physics, basically in the context of quantum mechanics. The vacuum has properties that can actually get modified.
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