Moire Twin-Shell Table Lamp - Rotating Inner Shell, 24 + 20 Spiral Ribs, Vase Mode, USB LED, No Supports

A table lamp that makes its own moire. Two nested spiral-ribbed shells, one inside the other: the outer shell has 24 narrow ribs twisting one way, the inner shell has 20 ribs twisting the other way, and only about 2.6 mm of air between them. Switch the LED on and the two rib patterns overlap into a glowing lattice of light and shadow. Then turn the ring at the foot by hand: the inner shell turns with it and the fringes sweep across the lamp. 18 degrees of ring travel move the pattern by one ful…

♥ 0