I just review-closed this question as off-topic with sub-reason being "This question is not about mathematics, within the scope defined in the help center".
Another possible sub-reason was that it belongs on Physics SE. In spite of this, since I've heard that Physics SE does not welcome such questions, I decided to choose that the question simply didn't belong on MSE.
I suppose there might be people who disagree with closing this question in particular. Despite this, it is conceivable that there might be similar questions which should definitely be closed as off-topic.
Regarding the aforementioned questions, what sub-reason should be chosen: $$\text{doesn't belong on MSE} \color{grey}{\text{ or }} \text{belongs on Physics SE }?$$