Because of surface tension and air pressure, when a card is placed on a glass of water and the system inverted, the card will stay attached to the cup.
* Equipment seen in the video may vary from equipment used in ND Demonstrations. See information and images below for ND equipment and setup.
Setup:
Place the equipment on the lab table.
Pour water into the cup. (It does not have to be full.) Place the card on top of the cup making sure that the cup does not hang off the edge of the card. Holding the card to the cup, flip the system over. Carefully remove your hand from the card. The card should remain attached to the cup.
Notes:
This demonstration may require some practice ahead of time.
Courses Used In:
Coming Soon
Discussion and Polling Questions:
Coming Soon
Equipment Needed:
Cup
Index Card
Beaker of Water