Comments by "nexus1g" (@nexus1g) on "5 Fun Physics Phenomena" video.

  1. Cane: I would say that it's psychological to keep the cane from falling, but since this is specifically about physics phenomena, I'll say that it's because of differences in friction between the two fingers from increased and decreased weight over the individual fingers. Phone: Conservation of angular momentum I would suspect is playing at least a part in this. I think it's interesting that the phone seems to become stable at its apex, but during its ascent and descent is when it seems to become unstable. It's also worth noting that the ascent sees the phone spin around the long axis in the opposite direction when compared to its descent. In the case of the phone, we not only have the angular momentum of the spinning phone, but also the vector along which the phone itself is traveling through the air which seems that it may play a role. I'm unable to articulate what the relationship is. Cup & Water: Since create an abundance of electrons on the cups, there is going to be a difference in charge between the water and the cup. As such, when the two come close together, electrons are going to try their best to balance out between the water and the cup. Electrons start flowing from the more negatively charged cup to the more positively charged water -- a static discharge. Prior to the discharge itself, however, the two opposite charges will be attracted to one another. Cereal: Most cereals are fortified with iron. Teabag: The teabag is porous. As it burns, it is releasing lighter-than-air gases. When it reaches the bottom of the teabag, the mass left is light enough to be lifted by the gases that happen to get trapped in the remaining meshing.
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