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In the Abbe refractometer the liquid sample is sandwiched into a thin layer between an illuminating prism and a refracting prism. The refracting prism is made of a glass with a high refractive index (e.g., 1.75) and the refractometer is designed to be used with samples having a refractive index smaller than that of the refracting prism.
Roof prism. A roof pentaprism used in Single-lens reflex cameras; the lower right face is the roof ( dach ). A roof prism, also called a Dachkanten prism or Dach prism (from German: Dachkante, lit. "roof edge"), is a reflective prism containing a section where two faces meet at a 90° angle, resembling the roof of a building and thus the name.
Toftness device. The Toftness Radiation Detector is an instrument used by some chiropractors. It was patented by Irwing N. Toftness in 1971, [1] and was banned from use in the United States in 1982. [2] Toftness claimed that it detected electromagnetic radiation emanating from vertebral subluxations (small dislocations). [3]
Wikipedia [c] is a free content online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki.
Pitch correction. Pitch correction is an electronic effects unit or audio software that changes the intonation (highness or lowness in pitch) of an audio signal so that all pitches will be notes from the equally tempered system (i.e., like the pitches on a piano ). Pitch correction devices do this without affecting other aspects of its sound.
Demolished 2017. Opened. 1861. Closed. December 2004. Managed by. Michigan Department of Corrections. The Detroit House of Correction ( DeHoCo ), opened in 1861, was owned and run by the City of Detroit but originally accepted prisoners from throughout the state including women. This was the first State operated prison for female felons.
Human penis. In human anatomy, the penis ( / ˈpiːnɪs /; pl.: penises or penes; from the Latin pēnis, initially "tail" [1]) is an external male sex organ ( intromittent organ) that additionally serves as the urinary duct. The main parts are the root, body, the epithelium of the penis including the shaft skin, and the foreskin covering the glans.
A wooden horse, Chevalet (as it was called in Spain), Spanish donkey or cavalletto squarciapalle is a torture device, of which there exist two variations; both inflict pain by using the subject's own weight by keeping the legs open, tied with ropes from above, while lowering down the subject. [1] The French called this instrument the chevalet ...