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  2. Double-slit experiment - Wikipedia

    en.wikipedia.org/wiki/Double-slit_experiment

    Same double-slit assembly (0.7 mm between slits); in top image, one slit is closed. In the single-slit image, a diffraction pattern (the faint spots on either side of the main band) forms due to the nonzero width of the slit. This diffraction pattern is also seen in the double-slit image, but with many smaller interference fringes.

  3. Bing double - Wikipedia

    en.wikipedia.org/wiki/Bing_double

    The Bing double of a slice knot is a slice link, though it is unknown whether the converse is true. [2] The components of a Bing double bound disjoint Seifert surfaces. [2] A solid torus encasing the Bing double of the unknot.

  4. McDouble - Wikipedia

    en.wikipedia.org/wiki/McDouble

    The Daily Double, similar to the McDouble but with slightly different toppings, was test marketed in 2011 and 2012. People on social media, including some radio announcers, claimed that the McDouble was the cheapest and most nutritious food, [ 10 ] [ 11 ] [ 12 ] and it was also claimed to be the cheapest alternative to junk foods.

  5. Twist knot - Wikipedia

    en.wikipedia.org/wiki/Twist_knot

    Of the twist knots, only the unknot and the stevedore knot are slice knots. [2] A twist knot with n {\displaystyle n} half-twists has crossing number n + 2 {\displaystyle n+2} . All twist knots are invertible , but the only amphichiral twist knots are the unknot and the figure-eight knot .

  6. Rope splicing - Wikipedia

    en.wikipedia.org/wiki/Rope_splicing

    Tubular fids aid in splicing double-braided rope. Top fids are used to pull rope taut while separating strands of rope with a Swedish fid. Uni-fids are needed to splice braid with a parallel core. A marlinspike is a tool, usually made of steel and often part of a sailor's pocketknife, which is used to separate strands of rope from one another ...

  7. Torus knot - Wikipedia

    en.wikipedia.org/wiki/Torus_knot

    A (3,−7)-3D torus knot.EureleA Award showing a (2,3)-torus knot. (2,8) torus link. In knot theory, a torus knot is a special kind of knot that lies on the surface of an unknotted torus in R 3.

  8. Empire biscuit - Wikipedia

    en.wikipedia.org/wiki/Empire_biscuit

    Other regional names include Imperial biscuits or double biscuits. Empire biscuits are loved for their buttery texture, sweet jam filling, and the extra sweetness from the icing, making them a popular choice in bakeries and for afternoon tea. [2] [3]

  9. Slice (painting) - Wikipedia

    en.wikipedia.org/wiki/Slice_(painting)

    Slice is a 2020 oil painting by the American artist Jasper Johns.. The work is a horizontal, mostly black oil painting that contains references to two outside sources: an anatomical diagram of a knee drawn by a Cameroonian emigre student Jéan-Marc Togodgue; and a map of the distribution of galaxies in a slice of the universe by Valérie de Lapparent, Margaret Geller, and John Huchra with ...