[boombox_gif_video mp4=”https://viralrang.com/wp-content/uploads/2017/01/588c4936edb07_straight-bar-passing.mp4″ gif=”https://viralrang.com/wp-content/uploads/2017/01/straight-bar-passing.gif” jpg=”https://viralrang.com/wp-content/uploads/2017/01/588c4936edb07_straight-bar-passing.jpg”]
This GIF is from a Youtube video that was recorded in an exhibit which took place in Museum of Science in Valencia, Spain. This is a solid metal bar that is passing through a curved parabola carved in a plastic sheet. The tilted position of the bar is making this possible. Straight lines form hyperbolic shapes when rotating. A complete explanatory video.