Una revisión de Perpetual Marble Machine Kinetic
Consistently earned 5-star reviews, shipped orders on time, and replied quickly to messages Sort by: Relevancypoint of the rail. In that case, how is the ball “boosted” by the magnet, since we normally think of magnets Figura attracting objects toward them, rather than pushing them? The answer to this is Lenz’s law and the presence of eddy cu