Magnets and Marbles

This Rube Goldberg-esque marble run is both soothing and astounding. Regular marbles are used in conjunction with magnetic metal balls in an intricate series of balanced relays. Can you imagine how much testing went into creating this? The creator, Kaplamino, normally works with dominoes. Although it appears to be one sequence, that would have taken up a lot of room. I’m still impressed, even if they weren’t all recorded at the same time. (via reddit)