Upside-Down Water Glass | Viral TikTok Science Experiments

Here is another fake viral science experiment that was floating online for a while. Can we really turn a glass upside down so that water stays in the glass?
This trick uses a bit of real science, making it harder to understand where the real science finishes and the fake one begins.
Air molecules are constantly pushing into things creating a pressure of about 1 kg per square centimetre. That is enough pressure to hold a card under the water glass in place. The weight of water in my glass is only around 0.1 kg and there is no air pressure in the glass. So the upwards air pressure is much greater than the pressure of the water pushing down – keeping the water in the cup. In theory, water could stay in a glass even without a card. However, in practice, it's impossible to achieve. Water surface tension is not enough to stabilize the surface when the card is removed. A tiny ripple in the surface of the water makes the water pour down.
The secret of this demonstration is hiding in a special glass that you could get from any magician shop.
This glass makes this fake science experiment look cool, but this is just a magic trick - not science!
There you have it, another misleading science experiment!
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#water_upside_down #upside_down_water #water_glass_trick #experiments_with_water #tiktok_experiments #tiktok_science #tiktok_science_experiments #tiktok_science_exposed #tiktok_science_videos #viral_science_experiments #viral_science_videos

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