Jacob’s ladder is a toy consisting of blocks of wood held together by ribbons.
When the ladder is held at one end, blocks appear to cascade down the strings. This effect is a visual illusion which is the result of one block after another flipping over. It may be considered a kinetic illusion, where the blocks appear to change position when they do not.
Size: 30 x 5 cm approx. (when fully unfolded).
Packed size: 7.5 x 5 x 5 cm approx.