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Re: [ontolog-forum] A "common basis"

To: "[ontolog-forum]" <ontolog-forum@xxxxxxxxxxxxxxxx>
From: Patrick Durusau <patrick@xxxxxxxxxxx>
Date: Thu, 03 May 2007 06:44:58 -0400
Message-id: <4639BD2A.6010107@xxxxxxxxxxx>
Pat,    (01)

Cassidy, Patrick J. wrote:    (02)

>  Could you provide us with an ontology that has no physical objects in
>it, just quantum-mechanical wave functions?  I have to admit that my
>imagination fails me here and I can't figure out what an ontology like
>that would look like.
You might be interested in an article in the May issue of Scientific 
American, "A Do-It-Yourself Quantum Eraser," May, 2007, pp.90-95.    (03)

Supplemental material for the article can be found at: 
http://www.sciam.com/article.cfm?articleID=E20B77CB-E7F2-99DF-33669D92032DFF8C    (04)

 From the article:    (05)

"We will show you how to set up an experiment that illustrates what is 
known as quantum erasure. This effect involves one of the oddest 
features of quantum mechanics-the ability to take actions that change 
our basis interpretation of what happened in past events."    (06)

Hope you are having a great day!    (07)

Patrick    (08)

>Patrick Cassidy
>260 Industrial Way West
>Eatontown NJ 07724
>Eatontown: 732-578-6340
>Cell: 908-565-4053
>>-----Original Message-----
>>From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx 
>>[mailto:ontolog-forum-bounces@xxxxxxxxxxxxxxxx] On Behalf Of 
>>Kathryn Blackmond Laskey
>>Sent: Wednesday, May 02, 2007 10:16 PM
>>To: [ontolog-forum] 
>>Subject: Re: [ontolog-forum] A "common basis"
>>Pat -
>>>  To say there are protons "in the nucleus" does not make any
>>>commitment as to whether the thing called "proton" is a 
>>point particle
>>>or a distributed wave function;
>>I wasn't talking about localization. I was talking about the 
>>existence of a "thing" we can call a proton.  In quantum mechanics 
>>there are no distinguishable "things" we can identify as individual 
>>protons.  Rather, there is only one "thing" we can identify as an 
>>n-proton wave function, where n is the number of protons in the 
>>universe.  In relativistic quantum theory, there isn't even a 
>>definite number of protons.  There is just a mass-energy function 
>>that gives probabilities that if proton-localization experiments are 
>>conducted at given locations, proton-detection events will occur.
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>    (09)

Patrick Durusau
Chair, V1 - Text Processing: Office and Publishing Systems Interface
Co-Editor, ISO 13250, Topic Maps -- Reference Model
Member, Text Encoding Initiative Board of Directors, 2003-2005    (010)

Topic Maps: Human, not artificial, intelligence at work!     (011)

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