Have you ever tried placing drops of water on the surface of a coin? How many do you think would fit? Many more than you think, for sure. In this article, we’ll show you the results with various coins.
Why Does This Happen?
This behavior is due to a property of water known as surface tension. Surface tension is a force that keeps water molecules together. Water creates a kind of “invisible fabric” that acts like a waterproof layer and prevents it from spilling (up to a certain point, when there’s too much water, it eventually gives way). We must also consider the small edge of the coins, which helps create this resistant bubble.
Results
After performing the experiment with a dropper, water, and coins of different denominations, we obtained the following results.
| Coin | Drops |
|---|---|
| 1 cent | 13 |
| 2 cents | 20 |
| 5 cents | 18 |
| 10 cents | 19 |
| 20 cents | 19 |
Which one surprised you the most? Did you expect these results?
