Re: It's science!
The Bernoulli Effect has nothing to do with electrical charges. It is the principle that an object traveling though air or water (or a similar fluid medium) creates lift (Vacuum or a decrease in pressure) when one path of the fluid (the top of the wing) is longer than the other path (bottom of the wing). The fluid moves at different rates to avoid being separated in order to follow the conservation laws of physics. The same thing occurs when the fluid passes between two objects and if they are the right aerodynamic shape the lift (Vacuum) tends to draw the objects together.
The drone got too close to the train engine and was pulled into the train by the Bernoulli effect.