<story><title>Mass and angular momentum, left ambiguous by Einstein, get defined</title><url>https://www.quantamagazine.org/mass-and-angular-momentum-left-ambiguous-by-einstein-get-defined-20220713/</url></story><parent_chain></parent_chain><comment><author>hinkley</author><text>Maybe a year ago, possibly here, I finally saw gyroscopic precession demonstrated in a way that didn’t invoke magic thinking. The person simply pointed out that the mistake is in thinking of the rotating mass as a stationary object, when in fact you are applying the lateral force to a different spot on the object at each time interval, leading to very strange vectors.</text></comment>
<story><title>Mass and angular momentum, left ambiguous by Einstein, get defined</title><url>https://www.quantamagazine.org/mass-and-angular-momentum-left-ambiguous-by-einstein-get-defined-20220713/</url></story><parent_chain></parent_chain><comment><author>ncmncm</author><text>I really appreciate articles that don&amp;#x27;t just say what a new thing reveals, but puts it in a context of what we still don&amp;#x27;t know.</text></comment>