View Single Post
Old 02-04-2007, 02:17 PM   #3
tuffguy
Regular User
 
Join Date: Dec 2003
Posts: 427
Default

Originally Posted by Vansquish
The infamous Schroedinger's cat problem is a thought experiment that has applications to quantum mechanics and various other high-level strains of physics.

Basically it is this:
We place a living cat into a steel chamber, along with a device containing a vial of hydrocyanic acid. There is, in the chamber, a very small amount of a radioactive substance. If even a single atom of the substance decays during the test period, a relay mechanism will trip a hammer, which will, in turn, break the vial and kill the cat. The observer cannot know whether or not an atom of the substance has decayed, and consequently, cannot know whether the vial has been broken, the hydrocyanic acid released, and the cat killed. Since we cannot know, the cat is both dead and alive according to quantum law, in a superposition of states. It is only when we break open the box and learn the condition of the cat that the superposition is lost, and the cat becomes one or the other (dead or alive). This situation is sometimes called quantum indeterminacy or the observer's paradox: the observation or measurement itself affects an outcome, so that it can never be known what the outcome would have been if it were not observed.
In theory and for the sake of philosophical argument, yes.

But how many times has the box been opened and the cat found alive?
tuffguy is offline   Reply With Quote