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Newton disc. The Newton disc, also known as the disappearing colour disc, is a well-known physics experiment with a rotating disc with segments in different colours (usually Newton's primary colours: red, orange, yellow, green, blue, indigo, and violet, commonly known by the abbreviation ROYGBIV) appearing as white (or off-white or grey) when ...
A prayer wheel, or mani wheel, is a cylindrical wheel ( Tibetan: འཁོར་ལོ།, Wylie: 'khor lo, Oirat: кюрдэ) for Buddhist recitation. The wheel is installed on a spindle made from metal, wood, stone, leather, or coarse cotton. Prayer wheels are common in Tibet and areas where Tibetan culture is predominant. Traditionally, a ...
The spinning drive wheel turns the flyer and, via friction with the flyer shaft, the bobbin. A short tension band, or brake band, adds drag to the bobbin such that when the spinner loosens their tension on the newly spun yarn, the bobbin and flyer spin relative to each other and the yarn is wound onto the bobbin.
Spinning is an ancient textile art in which plant, animal or synthetic fibres are drawn out and twisted together to form yarn. For thousands of years, fibre was spun by hand using simple tools, the spindle and distaff. After the introduction of the spinning wheel in the 13th century, the output of individual spinners increased dramatically.
Rota Fortunae. From an edition of Boccaccio's De Casibus Virorum Illustrium showing Lady Fortune spinning her wheel. In medieval and ancient philosophy, the Wheel of Fortune or Rota Fortunae is a symbol of the capricious nature of Fate. The wheel belongs to the goddess Fortuna ( Greek equivalent: Tyche) who spins it at random, changing the ...
Le Rouet d'Omphale ( The Spinning Wheel of Omphale or Omphale's Spinning Wheel ), Op. 31, is a symphonic poem for orchestra, composed by Camille Saint-Saëns in 1871. It is one of the most famous of the four symphonic poems in a mythological series by Saint-Saëns. The other three in the series are Danse macabre, Phaëton, and La jeunesse d ...
A gyroscope (from Ancient Greek γῦρος gŷros, "round" and σκοπέω skopéō, "to look") is a device used for measuring or maintaining orientation and angular velocity. [ 1][ 2] It is a spinning wheel or disc in which the axis of rotation (spin axis) is free to assume any orientation by itself. When rotating, the orientation of this ...
Spinner's weasel (left) and spinning wheel (right) Spinner's weasel or clock reel is a mechanical yarn-measuring device consisting of a spoked wheel with gears attached to a pointer on a marked face (which looks like a clock) and an internal mechanism which makes a "pop" sound after the desired length of yarn is measured (usually a skein). The ...