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58 | ATMOSPHERE vs VACUUM • That's All Right , Mama !
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Some of us learned before starting school. Regardless of grammar, I'm happy that people are still learning things.

+Michael Ramkissoon I prefer to think of not as a lack of pressure, but the weight of our atmosphere crushing the container.
What relation between topic and picture ?
This topic: "That's All Right , Mama !"?

Probably just being silly. This is a reverse animation of the original where the container gets crushed. Maybe this topic is along the lines of "it's ok, I fixed it" or something.

Well, if I remember correctly, the highest possible vacuum is 14.7 PSI at sea level because this is atmospheric press. That seems insufficient to crush that...
1 Atmosphere pressure... but apparently it crushed due to creating a vacuum inside. But this is basically what would happen to a submarine if it wasn't engineered well and went too deep.
I'm well behind school days and don't ever remember studying pressure in that kind of detail, but this chart seems to point to 14.7 PSI being atmospheric pressure at sea level. I don't believe that means that's the maximum vacuum you could attain at sea level. I'm sure with the right vessel, you could attain almost absolute vacuum.

But my guess that you need to go below 14.7 PSI at sea level to cause a collapse like this. The father below 14.7, the more pressure exerted on the vessel to make it collapse. For a theoretical example, maybe a soda can would only require 14.5psi to collapse but this tanker might require 5psi before it implodes.

Just guessing. Someone might have the real math.
OK..thank a lot..answer my question.
When talking about pressure, usually the important thing is the difference in pressure between two points.

In this case, outside the tanker (if it is at sea level) the air is pushing on the sides of the tanker at 14.7 Pounds per Square Inch (PSI). That means for every 1 inch by 1 inch square, it's like someone is pushing at 14.7 pounds on the tanker. Typically, there is also air on the inside pushing at the same force. However, the absolute best vacuum you could have would make it so that there is absolutely nothing inside the tanker. That would make it 0 PSI on the inside. So, at sea level, if it's open to the atmosphere on the outside, the most powerful vacuum would make it so that there was 14.7 PSI pushing on that tanker.

14.7 PSI is a lot on a large object. Think about this way. That tanker probably has a 5 foot radius on the the endcaps and is what, 20 feet long (I'm probably underestimating that considerably). Even in that case, it would be 158000 Pounds or 79 Tons of pressure pushing down on that tanker.

The important fact here is that the most powerful vacuum imaginable could only make the pressure 0 PSI.

For further thought, if the inside of the tanker was filled with air at sea level pressure, sealed, then brought 33 feet under water, the tanker would crush as well. That's because the the pressure outside would be double or (29.4 PSI) and the pressure inside would be 14.7 PSI, making the pressure differential 14.7 PSI.
I'd say that tanker was 40ft long
This gif is reversed, if you want to see the same effect, drink a small carton of juice with a straw and then keep sucking even after all the juice is gone.
The original non-reversed GIF is at the link on this post.

Here's the original video, apparently:
God always forgive, man sometimes forgives, nature never forgives.
or....maybe yo REWINDED the video so it would make it look like it was pushing air through it.
@40ft long it could go as high as 203K lbs, or 101 tons.
the tank = possible..
the chassis = maybe impossible..
+Farid P.O. Actually most of the strength is in the tank itself, quite a lot of other tankers don't even have a chassis at all, just subframes at each end.
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