| Interesting, but doubtful more than a parlour trick, until further analysis shows work. A laser interferometer, or perhaps a puddle of mercury could reveal what's virbrating and why. The video can't really prove anything on its own, since statistically, we have no way to intuit your character, potential motivation or reputation (hn karma lol). It's too easy to David Blaine something like this, but if 1000 other people quickly discover and replicate the problem, and converge on a pattern, then you get extra credit for discovery. How do we know it's not environmental? The heavy mass and smoothness of the metal/glass phone against the friction profile of the un-dust-jacketed book cover is going to behave differently than plastic credit cards which are rougher than glass, and have a mas of only a few grams. It could be infrasound from a nearby subwoofer, an unlevel plane by microns, capacitor whine within the phone, the phone's haptic motor on the fritz, anything. Cute trick. Instructions unclear. See also: https://en.wikipedia.org/wiki/Gauge_block |