Wednesday, June 8, 2011

The coffee-spilling uncertainty principle

If, when carrying your cup of coffee back from the coffee machine to your office, you hold the full cup close to you, you're less likely to spill any over the sides of the cup, but if you do spill, it is more likely to spill on your clothes. However, if you hold it further out from you, the coffee is much more likely to spill over the side of the cup, but much less likely to spill on your clothes.

The uncertainty in spilling your coffee multiplied by the uncertainty in spilling your coffee on you is always greater than Planck's constant times the amount of time spent at work.