Half a croissant, on a plate, with a sign in front of it saying '50c'
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Schrödinger Door Bell

A perfect gift for the quantum physicist in your life
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Cause nothing says "I care" as the door bell that confirms the existence of the recipient with every ring.
theircompetitor, Dec 11 2010

Knockdown Ginger / Knock, Knock, Ginger http://en.wikipedia...nock,_Knock,_Ginger
[Dub, Dec 13 2010]

Bringing it to life http://www.scientif...quantum-cat-to-life
From Scientific American [theircompetitor, Oct 10 2012]

[link]






       How thoughtful. Better than releasing cyanide gas into the house. But what if the quantum mechanic in your life subscribes to the many worlds interpretation?
mouseposture, Dec 11 2010
  

       "Can't decide on a career? Become a quantum mechanic."
baconbrain, Dec 12 2010
  

       // Shroedinger //   

       Sp. "Schrödinger"   

       Every time someone says, "I don't believe in Quantum Mechanics", a cat dies ..... MUHWHAHAHAHAHA !   

       Ahem.
8th of 7, Dec 12 2010
  

       We always called it Knock down Ginger
Dub, Dec 13 2010
  

       Hey [Dub] Thanks!! We didn't have a name for it in our neighborhood, but we rang doorbells and ran away on the week before Halloween. Once a neighbor guy hid in his bushes and jumped out and grabbed me! He really scared me. Then he said he was going to tell my parents, but that didn't scare me, because they knew we did it and approved. (Only for the week before Halloween of course!)
xandram, Dec 13 2010
  

       Surely such a door bell would be an object of terror for the recipient? Every time the bell rings you are in imminent danger of having your quantum state resolved. Possibly with terminal effects.
DrBob, Dec 13 2010
  

       Knock Knock
Who’s there?
I’m not certain.
Ian Tindale, Dec 13 2010
  

       The sound should actually be the noise of a wave function collapsing.
8th of 7, Dec 13 2010
  

       "Sir, it's the Cat Protection League. We'd probably like to talk to you."
MaxwellBuchanan, Dec 13 2010
  

       "Well, at the moment, I don't exactly know if I've got a cat or not. Why don't you go over there and open that box ?"
8th of 7, Dec 13 2010
  

       [IT] - That would be Heisenberg knocking on Schroedinger's doorbell?
sqeaketh the wheel, Dec 14 2010
  

       Ian, shirley that would be better as
'Knock knock?'
'Who's there?'
'Heisenberg'
'Heisenberg who?'
'I'm not certain.'
RayfordSteele, Dec 15 2010
  

       [RayfordSteele], what? Not...
'Knock knock?'
'Who's there?'
'Heisenberg'
'Bless you!...
Dub, Dec 15 2010
  

       'Knock, knock'
'Who's there?'
'Fluffy'
po, Dec 15 2010
  

       Knock knock?'
'Who's there?'
"Open the box and find out"
8th of 7, Dec 15 2010
  

       "Strange, there's no one at the door"
"Charmed, I'm sure?"
"Nope, he wasn't there either"
theircompetitor, Dec 15 2010
  

       //'Fluffy'// No, Fuzzy.
mouseposture, Dec 16 2010
  

       Are they still at the door?
Maybe, maybe not.
Ian Tindale, Dec 16 2010
  

       Knock knock.... "I may not be here"
xenzag, Dec 16 2010
  

       "knock,knock"
"Go get it"
"No, YOU go get it"
"Why do I have to go get it"
"Cause if I go get it, the probability function will collapse"
theircompetitor, Dec 16 2010
  
      
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