News for hackers. Stuff that matters.

A comment on Why Understanding Space Is So Hard (2016). Parent comment

Re:Why Understanding Space Is So Hard (2016) by testestx on Sunday January 21, 2018 @01:58PM (#16199379)
> There must be something else in the Universe to observe the single proton for it to have rotation, etc, according to quantum physics.

No, according to the Copenhagen interpretation.

[ Parent | on HN ]
Re:Why Understanding Space Is So Hard (2016) by whatshisface on Sunday January 21, 2018 @02:00PM (#16199391)
Even in the Copenhagen interpretation states can have well-defined angular momenta before wavefunction collapse.
[ Parent | on HN ]
Re:Why Understanding Space Is So Hard (2016) by vorg on Sunday January 21, 2018 @02:36PM (#16199542)
I thought in QM you couldn't know both the degree of rotation and the direction of the axis for a particle. If so, I wouldn't call that "well-defined".
[ Parent | on HN ]