This is the second oldest "Schrodinger's Cat" joke...

[MiddleFingerMom]

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... the oldest being, "Why did Schrodinger's Cat cross the road?"
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[HopeHoops]

1. You have to open the bar to find out.

[Baitball Blogger]

2. Two rec's and I don't get the joke.

[MicaelS]

4. Schrodinger's Cat...

http://en.wikipedia.org/wiki/Schr%C3%B6dinger%27s_cat

The cat DOES and DOES not walk into the bar.

[HopeHoops]

5. If you put a cat in a box, you can't be sure if it's alive or dead until you open the box.

From this you get the paradox that the cat is in two states at once while it's in the closed box - both alive and dead - because of the inability to determine its state. It's a thought experiment but one that applies well to sub-nuclear physics. The act of opening the box establishes the state in much the way that interacting with a particle establishes it's state, but both require altering said state in the process through the act of observation.

[pscot]

24. Unfortunately it does not apply very well to cats

If one puts a cat in a box it woll make its state known.

[HopeHoops]

27. Yeah, the other problem is that you have to open the box nine times.

[antiquie]

3. search for a joke and get physics humor

Rene Descartes is sitting in a bar doing what he does best - philosophising. He's had a few pints of ale over the course of the evening, and it's now last call. The bartender asks him if he wants another drink. Descartes says, "I think not," and promptly vanishes.

[HopeHoops]

6. I charged one of my daughters with my epitaph:"I thought, therefore I was. Now I don't, so I'm not."

[progressoid]

7. +1

[MiddleFingerMom]

8. BWAHAHA!!! Descartes is also the inspiration for some classic bathroom-wall graffiti:

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"I stink... therefore I am."
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[antiquie]

14. ha ha

more physics humor

[MiddleFingerMom]

16. Nope... philosophical humor!!!

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As in, "Sadly, too many Philosophy majors will find postgraduate careers
asking, "WHY do you want fries with that?"
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[antiquie]

25. That's just wrong. But true.

We have a horrid situation.

[spinbaby]

21. Still more science humor...

What happens in the event horizon stays in the event horizon.

[Iggo]

28. .

[hifiguy]

9. Excellent!

[central scrutinizer]

11. certainly?

Heisenberg is out for a drive when he's stopped by a traffic cop. The cop asks, "Do you know how fast you were going?" Heisenberg proclaims, "No, but I know where I am."

[Duer 157099]

13. Hmmm, I wonder if the reverse would work

Cop gives you a ticket for going 70mph. You ask him if he knows where you were when you were speeding, he replies yes, then you say ahah! then you couldn't know how fast I was going.

Wonder if the judge would buy it?

[MiddleFingerMom]

17. Hmph. Leave it to an arrogant Albuquerque-based meth Czar sociopath..

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... to risk everything by going into traffic court to fight a speeding ticket!!!
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[Iggo]

29. No spoilers!

[Jim Lane]

20. Another physicist-and-traffic-cop joke

The traffic cop pulls the physicist over for running a red light. The physicist explains that, because of the Doppler effect, the light from the signal was blue-shifted as he approached the intersection, so that the red light appeared to be green. The cop, satisfied with the explanation, tears up the ticket.

...and then writes a new one, for speeding, after he calculates how fast the physicist must have been going to make that happen.

[pinboy3niner]

19. Cartoon:

[central scrutinizer]

10. Scientific method

Take one ordinary cat, one large box, a particle detector, a radiation source, a bottle of cyanide gas. Hook up the detector so that if it detects a particle from the radiation source, it will open the cyanide gas. Set it up inside the box in such a way that there will be a 50% probability of a particle being detected from the radiation source within a five minute period. Add the cat to the box.

Theory says that the cat will enter a quantum state where it is 50% alive and 50% dead until the experimenter looks inside the box. However, reality teaches us that the severely pissed off cat cat WILL escape the box well before the 5 minutes are up, attack the experimenter and depart just in time for the severely lacerated experimenter to watch the hammer descend on the cyanide bottle one inch from his nose.

[rug]

12. This is why Einstein had a dog.

[AnneD]

15. Next time....

give a spew alert........

[dixiegrrrrl]

22. Well played, indeed.

[The Velveteen Ocelot]

18. My neighbor has this bumper sticker on his car:

Wanted - Schroedinger's cat - dead and alive.

[rurallib]

23. One of the strangest and best threads in the Lounge

that is - if I am really here?

[cyberswede]

26. For the kids...

[Yavin4]

30. Unless The Cat is Maru

Maru loves boxes:

[nolabear]

31. Descartes walks into a bar

Bartender asks "the usual?" Descartes says "I think not." and disappears.

It has moss on it but I still chuckle.