Homemade Science with Bruce Yeany | Upside down water glass, NEW VERSION of an old trick @YeanyScience | Uploaded August 2024 | Updated October 2024, 1 week ago.
A new take on a classic demonstration, the simple water glass turned upside down has a new twist when a balloon is used instead of a flat card.. The seal is improved enough that the jar of water can shaken and spun around without the water being spilled out. The weight of water inside the jar causes a slight pressure drop inside when turned upside down, with a lower pressure inside the jar, atmospheric pressure pushes against the balloon, which in turn seals the opening of the jar so the water stays inside. This behavior would be similar to the action of a suction cup. A more detailed explanation and more examples will be shown in a follow up longer version posted to my channel.
A new take on a classic demonstration, the simple water glass turned upside down has a new twist when a balloon is used instead of a flat card.. The seal is improved enough that the jar of water can shaken and spun around without the water being spilled out. The weight of water inside the jar causes a slight pressure drop inside when turned upside down, with a lower pressure inside the jar, atmospheric pressure pushes against the balloon, which in turn seals the opening of the jar so the water stays inside. This behavior would be similar to the action of a suction cup. A more detailed explanation and more examples will be shown in a follow up longer version posted to my channel.
