Glass of Water Volume
We can’t talk volume without talking ice cubes. Here’s the wild part: ice takes up about 9% more space than liquid water. That’s why your ice floats instead of sinking like a rock. When you drop cubes into a full glass, the volume of the ice is actually above the rim.
Volume water. Liquid of glasses empty half full quarter. Bulk fractions
As the ice melts, it takes up less space. That’s why a full glass with ice doesn’t overflow as it melts. It’s like the universe giving you a free pass on spillage. How cool is that?
Glass Shape vs. Volume Perception
Psychologists have a field day with this. A tall, skinny glass makes you think you’re drinking more than a short, fat one—even if they hold the same volume. It’s called the Elongation Effect, and bartenders use it against you.
So next time you pour a glass, check your bias. Your eyes are terrible judges of volume. Your stomach? It knows. Can you trust your own vision of a full glass?