Quantum entangled-photon Chinese satellite.

Mirimir mirimir at riseup.net
Sat Aug 6 14:18:36 PDT 2016


On 08/06/2016 02:04 PM, juan wrote:
> On Fri, 5 Aug 2016 15:31:13 -0600
> Mirimir <mirimir at riseup.net> wrote:
> 
> 
>>
>> The problem with classical mechanics is that it's not consistent with
>> measurements.
> 
> 	Not consistent with what measurements?

The fucking paper that I've cited. And more generally, all experiments
that reject the null hypothesis that the outcome of the CHSH game is 75%
or less.

>> Quantum mechanics is. The equations. According to the
>> Copenhagen interpretation, only the math matters. I don't like it any
>> more than you seem to. Because I'm not a mathematician.
> 
> 	"Only the math matters" doesn't make sense. This might come as
> 	a shock, but physics is supposed to 'measure' 'reality'. Then
> 	the  measured magnitudes may end up in some equations, used to
> 	calculate other aspects of...reality. 
> 
> 	Like, you measure the volume of object X, you then put
> 	'volume' and 'density' in a equation, and you get the weight of
> 	object X.
> 
> 	Math is just a tool that deals with numbers. And numbers
> 	without units have no physical meaning.

Quantum mechanics is math. It makes predictions about reality that can
be tested. By experiments where stuff gets measured.

The problem is that some predictions of quantum mechanics, such as this
stuff about entanglement, 1) have been verified experimentally, but 2)
don't make obvious sense. That is, a wave function comprising two
entangled electrons can apparently collapse instantaneously, even though
the electrons are arbitrarily far apart. You could try to give up light
as a universal speed limit. But that creates other paradoxes.

>>>> So basically, they find that the classical model of reality is
>>>> fucked.
>>>
>>>
>>> 	lol lol lol
>>
>> You must be a local realist ;)
> 
> 
> 	I of course am a rationalist and a realist. I don't know what
> 	'local realism' is supposed to mean. 

https://en.wikipedia.org/wiki/Principle_of_locality#Local_realism




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