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  2. Four-bar linkage - Wikipedia

    en.wikipedia.org/wiki/Four-bar_linkage

    In the study of mechanisms, a four-bar linkage, also called a four-bar, is the simplest closed-chain movable linkage. It consists of four bodies, called bars or links, connected in a loop by four joints. Generally, the joints are configured so the links move in parallel planes, and the assembly is called a planar four-bar linkage. Spherical and ...

  3. Homework - Wikipedia

    en.wikipedia.org/wiki/Homework

    The teacher says using class time for following up on homework gives that connection to what is learned in the class, noting, "In the initial step students complete and submit (traditional) homework assignments electronically, and then later they revisit their work through presentations of selected problems during class.

  4. Sine bar - Wikipedia

    en.wikipedia.org/wiki/Sine_bar

    Sine bar set up with one end raised on a stack of gauge blocks Trigonometric triangle with sides. The opposite side is perpendicular relative to AC axis. A sine bar consists of a hardened, precision ground body with two precision ground cylinders fixed at the ends. The distance between the centers of the cylinders is precisely controlled, and ...

  5. Barre (exercise) - Wikipedia

    en.wikipedia.org/wiki/Barre_(exercise)

    Barre (UK: / b ɑː /, US: / b ɑːr / bar) is a form of physical exercise, usually conducted in group classes in gyms or specialty studios. [1] It is distinguished from other group fitness activities by its use of the ballet barre and its incorporation of movements derived from ballet . [ 2 ]

  6. Architecture of India - Wikipedia

    en.wikipedia.org/wiki/Architecture_of_India

    Temples—build on elliptical, circular, quadrilateral, or apsidal plans—were constructed using brick and timber. [16] The Indian gateway arches, the torana, reached East Asia with the spread of Buddhism. [17] Some scholars hold that torii derives from the torana gates at the Buddhist historic site of Sanchi (3rd century BCE – 11th century ...

  7. Hierarchy of the sciences - Wikipedia

    en.wikipedia.org/wiki/Hierarchy_of_the_sciences

    Research has shown that, after controlling for the number of hypotheses being tested, positive results are 2.3 times more likely in the social sciences than in the physical sciences. [4] It has also been found that the degree of scientific consensus is highest in the physical sciences, lowest in the social sciences, and intermediate in the ...

  8. Hallucination (artificial intelligence) - Wikipedia

    en.wikipedia.org/wiki/Hallucination_(artificial...

    For example, a chatbot powered by large language models (LLMs), like ChatGPT, may embed plausible-sounding random falsehoods within its generated content. Researchers have recognized this issue, and by 2023, analysts estimated that chatbots hallucinate as much as 27% of the time, [7] with factual errors present in 46% of generated texts. [8]

  9. Vanadis 4 Extra - Wikipedia

    en.wikipedia.org/wiki/Vanadis_4_Extra

    Vanadis 4 Extra is a chromium-molybdenum-vanadium alloyed tool steel produced by Uddeholms AB. It is intended for powder metallurgy cold forming operations on materials such as annealed austenitic stainless steel , mild carbon steel , copper and aluminium .