There is a limit to the precision of pairs of properties of particles such as position and momentum that can be determined.

Does it mean that the properties are non-existent or simply cannot be determined?

Follow-up question: why can't the properties be determined?

It is not they can't be determined. The principle states there is a limit on the precision.

 

http://en.wikipedia.org/wiki/Uncertainty_principle

 

I suggest you look at the above reference.

It is not they can't be determined. The principle states there is a limit on the precision.

 

http://en.wikipedia.org/wiki/Uncertainty_principle

 

I suggest you look at the above reference.

 

 

I guess I should correct my question: why is there a limit to the precision at which the properties can be determined?

I guess I should correct my question: why is there a limit to the precision at which the properties can be determined?

Because these properties are described by waves, not points.

And these waves define the position and moment with some precision, even before humans attempt to make a measure, or other objects modify their behaviour according to this precision.

 

But: what's the difference? Why should you get interested in something you don't observe? Would it make any difference to you?

 

That's not just a joke. It's a very frequent answer by quantum mechanics. Disturbing maybe at the beginning, but reasonable.