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Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.
The song is known for its innovative, award-winning music video, directed by Mark Romanek with production design by Nigel Phelps and art direction by Brad Hartmaier. On March 21, 1992, En Vogue performed "Free Your Mind" on Saturday Night Live. [citation needed] On January 21, 1993, En Vogue performed the song on a sixth-season episode of the ...
A pull-through procedure is the definitive operation for Hirschsprung disease, involving the removal of the abnormal segment of bowel that has no nerves, pulling through the normal bowel and connecting it to the anus. Several types of pull-through procedures exist including the Soave, Swenson and Duhamel. It can be performed using an open or ...
Free video. Free video is video content that is free to use for any purpose, or licensed under a free and open license to such an effect, at least for distribution, and at most for modification and commercial usage. This can also apply to graphical animations .
NCH Software provides software programs for audio, video, business, dictation and transcription, graphics, telephony and other utilities. On September 26, 2014, cnet.com showed their most-frequently downloaded program from NCH Software was WavePad Sound Editor Masters Edition. [2]
4 dioptre prism, either loose or prism bar; Bright lighting conditions; Method of assessment. As it is an objective test, few instructions are required to be given to the patient. The patient is asked to fixate on a target while the examiner places a 4 prism dioptre base-out prism over the patient's eye, observing the response of the fellow eye.
Gynaecology. [ edit on Wikidata] The loop electrosurgical excision procedure ( LEEP) is one of the most commonly used approaches to treat high grade cervical dysplasia ( CIN II/III, HGSIL) and early stage cervical cancer discovered on colposcopic examination. In the UK, it is known as large loop excision of the transformation zone ( LLETZ ).
Photorefractive keratectomy ( PRK) and laser-assisted sub-epithelial keratectomy (or laser epithelial keratomileusis [1]) ( LASEK) are laser eye surgery procedures intended to correct a person's vision, reducing dependency on glasses or contact lenses. LASEK and PRK permanently change the shape of the anterior central cornea using an excimer ...