A little tinkering from me that shows what you can do with 3D printers today.
The table is acting as a cushion for the force put on a pendulum. Essentially, over a long enough time period, the force contracted by the rocking table will cause the metronomes to swing in the same direction.
Weatherman somehow pronounces Welsh town Llanfairpwllgwyngyllgogerychwyrndrob- wllllantysiliogogogoch on live TV.