The Spin Quantum Number, ms
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
The spin quantum number, ms, takes one of two values, +1/2 or −1/2, an intrinsic electron property independent of its orbital.
Show
Two electrons sharing one orbital must carry opposite ms values, one +1/2 and one −1/2, distinguishing them from each other.
Watch for
Spin is not literal spatial spinning of a tiny ball — it is an intrinsic quantum property with two possible values.