A Jacob's ladder (also magic tablets, Chinese blocks, and klick-klack toy) is a folk toy consisting of blocks of wood held together by strings or 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. Its name Jacob's Ladder comes from the biblical ladder to heaven, mentioned in Genesis 28:12. — "Jacob's Ladder", Scientific American, Vol. 61, No. 15 (October 1889)
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| - Jakobsleiter (Spielzeug) (de)
- Échelle de Jacob (jouet) (fr)
- Jacob's ladder (toy) (en)
- Drabina Jakuba (zabawka) (pl)
- Jakobsladder (speelgoed) (nl)
- Escada de Jacó (brinquedo) (pt)
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| - Als Jakobsleiter wird ein Spielzeug bezeichnet, das aus mehreren gleich großen Blöcken (flachen Quadern) besteht, die durch Bänder miteinander verbunden sind. Die Blöcke sind meist aus Holz oder Kunststoff, die Bänder häufig aus Stoff. Die Konstruktion erlaubt eine Bewegung, die einen scheinbaren kaskadenähnlichen Effekt erzeugt. (de)
- Une échelle de Jacob (appelée parfois "serpent magique" ou "yatago") est un jouet traditionnel constitué de blocs de bois assemblés par des fils ou des rubans. Quand l'échelle est tenue par une extrémité et que le bloc supérieur est retourné, les blocs semblent se retourner en cascade les uns après les autres. (fr)
- Drabina Jakuba – tradycyjna zabawka zbudowana z drewnianych bloczków połączonych tasiemkami. Jeśli trzyma się zabawkę za jeden z końców, reszta bloczków opada pozornie zmieniając swoje pozycje, jest to rodzaj złudzenia optycznego. Nazwa nawiązuje do biblijnej drabiny Jakuba sięgającej nieba, opisanej w Księdze Rodzaju. Zabawka popularna jest od wieków i jej dokładne pochodzenie nie jest znane. (pl)
- Een jakobsladder is een rij plankjes, waarbij elk plankje aan elk volgend plankje is bevestigd met een bijzonder scharniersysteem. Het wordt gebruikt als speelgoed, of om mensen te verbazen met een schijnbaar onmogelijk fenomeen. (nl)
- Escada de Jacó, também conhecido como Dominó chinês, Traca-traca e Escada de Maracá ou Maracê, é um brinquedo de características lúdicas onde a criatividade de elaborar formas são representadas através de histórias. Trata-se de um binquedo educativo geralmente feito em feito em madeira ou MDF e colagem de fitas de cetim. (pt)
- A Jacob's ladder (also magic tablets, Chinese blocks, and klick-klack toy) is a folk toy consisting of blocks of wood held together by strings or 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. Its name Jacob's Ladder comes from the biblical ladder to heaven, mentioned in Genesis 28:12. — "Jacob's Ladder", Scientific American, Vol. 61, No. 15 (October 1889) (en)
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| - Als Jakobsleiter wird ein Spielzeug bezeichnet, das aus mehreren gleich großen Blöcken (flachen Quadern) besteht, die durch Bänder miteinander verbunden sind. Die Blöcke sind meist aus Holz oder Kunststoff, die Bänder häufig aus Stoff. Die Konstruktion erlaubt eine Bewegung, die einen scheinbaren kaskadenähnlichen Effekt erzeugt. (de)
- A Jacob's ladder (also magic tablets, Chinese blocks, and klick-klack toy) is a folk toy consisting of blocks of wood held together by strings or 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. Its name Jacob's Ladder comes from the biblical ladder to heaven, mentioned in Genesis 28:12. Of unknown origin, the earliest known review of the Jacob's Ladder is an 1889 Scientific American article which tells how it is built and works: The simple toy ... is very illusive in action. When the upper block is grasped by the edges ... and turned so as to lift the second block in the series to the same height, the upper end of the second block falls into an inverted position, and appears to pass downward on the other members of the series, first upon one side of the ladder and then upon the other until it reaches the bottom. But this effect is only apparent, as the second block in reality only falls back into its original position in the series; but in the operation it becomes reversed, what was before the lower end becoming the upper end, the front having exchanged places with the back. This change of position of the second member brings it parallel with the third block, which is then released, and the third member drops over onto the fourth, when the fifth block is released, and so on throughout the entire series. — "Jacob's Ladder", Scientific American, Vol. 61, No. 15 (October 1889) (en)
- Une échelle de Jacob (appelée parfois "serpent magique" ou "yatago") est un jouet traditionnel constitué de blocs de bois assemblés par des fils ou des rubans. Quand l'échelle est tenue par une extrémité et que le bloc supérieur est retourné, les blocs semblent se retourner en cascade les uns après les autres. (fr)
- Drabina Jakuba – tradycyjna zabawka zbudowana z drewnianych bloczków połączonych tasiemkami. Jeśli trzyma się zabawkę za jeden z końców, reszta bloczków opada pozornie zmieniając swoje pozycje, jest to rodzaj złudzenia optycznego. Nazwa nawiązuje do biblijnej drabiny Jakuba sięgającej nieba, opisanej w Księdze Rodzaju. Zabawka popularna jest od wieków i jej dokładne pochodzenie nie jest znane. (pl)
- Een jakobsladder is een rij plankjes, waarbij elk plankje aan elk volgend plankje is bevestigd met een bijzonder scharniersysteem. Het wordt gebruikt als speelgoed, of om mensen te verbazen met een schijnbaar onmogelijk fenomeen. (nl)
- Escada de Jacó, também conhecido como Dominó chinês, Traca-traca e Escada de Maracá ou Maracê, é um brinquedo de características lúdicas onde a criatividade de elaborar formas são representadas através de histórias. Trata-se de um binquedo educativo geralmente feito em feito em madeira ou MDF e colagem de fitas de cetim. (pt)
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