vacuum
One way to turn a glass full of water upside down without spilling it is to place a piece of cardboard or a small plate over the mouth of the glass, then flip the glass upside down while holding the plate/cardboard in place. Once the glass is upside down, carefully remove the plate/cardboard to reveal the water remaining in the glass.
The cardboard did not fall to the ground when the glass of water was tipped upside down because the air pressure on the top surface of the cardboard was greater than the water pressure holding it down. This created a force that pushed the cardboard against the glass and prevented it from falling.
The air pressure pushing up on the paper is greater than the gravitational force pulling down on the water, creating a temporary barrier that holds the water in place. This creates a vacuum seal, preventing the water from spilling out when the glass is turned upside down.
When you dip a glass upside down in a pail filled with water, the air trapped inside the glass creates an air pocket at the top of the glass, preventing water from entering. This is because the pressure of the air inside the glass is greater than the pressure of the water outside. The glass will remain filled with air and no water will enter.
This because air is present inside the empty glass which does not let the water to enter theglass . Air also offers a force which is opposite the force of water and does not let the water to enter the glass.
When filling a cup/glass with full water the card/lid will not stay up.
One way to turn a glass full of water upside down without spilling it is to place a piece of cardboard or a small plate over the mouth of the glass, then flip the glass upside down while holding the plate/cardboard in place. Once the glass is upside down, carefully remove the plate/cardboard to reveal the water remaining in the glass.
because the spoon is concave, making the reflection upside down
freez the water. after freezing it will be ice then you can turn a glass of water upside down without spilling the water.
If you are referring to the traditional trick, you would pick a card from the deck, then, when you are not looking, they turn flip the deck upside down (if the back is 1 side up but the front is correct up or down) then, when they open their eyes, they look for the one that is upside down and that's your card. If you are referring to a game on a website where it makes the card disappear, the ones they show you at the end are not even any of the ones shown in the beginning.
Can you be more specific as to who does this?If you mean glasses already on the table when you are seated in restaurants, having them upside down keeps dust from falling into the glass and allows them to drain if they weren't QUITE dry when placed there.
Because when you turn it upside down, the surface tension of the full glass of liquid, combined with atmopheric pressure provides just enough force to out-do gravity !
When a glass of water is turned upside down, the water does not fall out due to the presence of air pressure pushing against the water, creating a vacuum inside the glass. This vacuum holds the water in place, creating a seal that prevents the water from spilling out.
The cardboard did not fall to the ground when the glass of water was tipped upside down because the air pressure on the top surface of the cardboard was greater than the water pressure holding it down. This created a force that pushed the cardboard against the glass and prevented it from falling.
its a special code that you access online
The rod creates a prism so you see the words upside down.
The air pressure pushing up on the paper is greater than the gravitational force pulling down on the water, creating a temporary barrier that holds the water in place. This creates a vacuum seal, preventing the water from spilling out when the glass is turned upside down.