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A Jacob's ladder (also magic tablets, Chinese blocks, and klick-klack toy [1]) 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
Lichtenberg figures can also be produced on wood. The types of wood and grain patterns affect the shape of the Lichtenberg figure produced. [16] By applying a coat of electrolytic solution to the surface of the wood, the resistance of the surface drops considerably. Two electrodes are then placed on the wood and a high voltage is passed across ...
Block books or blockbooks, also called xylographica, are short books of up to 50 leaves, block printed in Europe in the second half of the 15th century as woodcuts with blocks carved to include both text (usually) and illustrations. The content of the books was nearly always religious, aimed at a popular audience, and a few titles were often ...
The first nine blocks in the solution to the single-wide block-stacking problem with the overhangs indicated. In statics, the block-stacking problem (sometimes known as The Leaning Tower of Lire (Johnson 1955), also the book-stacking problem, or a number of other similar terms) is a puzzle concerning the stacking of blocks at the edge of a table.
Two embossed wooden blocks from the first block wargame, Quebec 1759 (1972). Combat strength step reductions are displayed around the perimeters . A block wargame is a board wargame that represents military units using wooden blocks instead of cardboard counters or metal/plastic miniatures.
These beetles were commonly found in wood used to build furniture in the Edo period. Woodblock prints that were stored on bookshelves, or other furniture infested with these beetles, also became infested themselves. [5] Print shows holes caused by Deathwatch beetles. Kabuki Theatre Kawarazakiza LACMA M.2000.105.36a-c
In a Klotski puzzle, the largest block must be moved to the bottom middle location so that it can be slid over the border, without any of the other blocks being removed in this way. Klotski (from Polish: klocki, lit. 'wooden blocks') is a sliding block puzzle thought to have originated in the early 20th century. The name may refer to a specific ...
Wooden movable types in the China Printing Museum, Beijing. Both in China and Europe, printing from a woodblock preceded printing with movable type. [12]Along with clay movable type, wooden movable type was invented in China by Bi Sheng in 1040s CE/AD, although he found clay type more satisfactory, and it was first formally used to print by Wang Zhen.