What is the shape of electron? sphere,cube, or any other geometrical shape. It is not correct question because we cannot accept only a particle due to dual nature. Spinning motion only does particle not wave, yes of course it is spinning that gives spectral evidence so we must conclude that in atom electron behave as particle. Wait the standing wave nature explain the stability of electron so we tells that for orbit motion electron is wave but for spinning it is particle. Totally confusing to avoid this problem there is a great solution just forget this thing, that means it doesn't revolve and doesn't spinning. But we must care the experiment result for spinning. This was given by Stern Gerlac experiment but it is gives a quantised result that means spinning has only has discrete possible values this is called Spin.
Positive or negative half spin means the spinning electron only posses two states for example assume that electron is like below shape and after quantised spin it become the second shape, but remember that electron only posses these two states or it is not a continuous rotation. You can't accommodate but it is true, so it is not a ordinary spinning something special, to resolve this confusion don't be picturised. In physics we first want reason, picturisation is second.
So spin is a property of elementary particles like charge, it has no relation with ordinary spinning. And macroscopic objects doesn't shows this property.
Positive or negative half spin means the spinning electron only posses two states for example assume that electron is like below shape and after quantised spin it become the second shape, but remember that electron only posses these two states or it is not a continuous rotation. You can't accommodate but it is true, so it is not a ordinary spinning something special, to resolve this confusion don't be picturised. In physics we first want reason, picturisation is second.
