Brain Teasers
Pint of Guinness
Science
Science brain teasers require understanding of the physical or biological world and the laws that govern it.Science
How can it be possible that the bubbles in a pint of Guinness move downwards?
Answer
Overall the bubbles travel upwards, and they do this especially in the center of the glass (free from the drap of the glass), but since they cannot escape at the top of the glass, some (the smaller ones) are forced into a circle and move down around the outside of the glass. Thus some bubbles do move down, but overall they travel up!Hide Answer Show Answer
What Next?
View a Similar Brain Teaser...
If you become a registered user you can vote on this brain teaser, keep track of which ones you have seen, and even make your own.
Solve a Puzzle
Comments hidden to avoid spoilers.
Follow Braingle!