schlieren lens

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• Schlieren — (from German; singular schliere ) are optical inhomogeneities in transparent material not visible to the human eye. Schlieren physics developed out of the need to produce high quality lenses void of these inhomogeneities. These inhomogeneities… …   Wikipedia

• Schlieren photography — is a visual process that is used to photograph the flow of fluids of varying density. Invented by the German physicist August Toepler in 1864 to study supersonic motion, it is widely used in aeronautical engineering to photograph the flow of air… …   Wikipedia

• motion-picture technology — Introduction       the means for the production and showing of motion pictures. It includes not only the motion picture camera and projector but also such technologies as those involved in recording sound, in editing both picture and sound, in… …   Universalium

• Photography — is the art, science and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor or chemically by means of a light sensitive material such as photographic… …   Wikipedia

• Keratokonus — Klassifikation nach ICD 10 H18.6 Keratokonus Z94.7 Zustand nach Keratoplastik …   Deutsch Wikipedia

• High speed photography — [ Eadweard Muybridge, first published in 1887.] High Speed Photography is the science of taking pictures of very fast phenomena. In 1948, the Society of Motion Picture and Television Engineers (SMPTE) defined high speed photography as any set of… …   Wikipedia

• Liste der Bahnhöfe in der Schweiz — Diese Liste behandelt die Bahnhöfe, Stationen und Haltestellen von Eisenbahnen in der Schweiz. Allein die SBB hat aktuell etwas mehr als 600 Stationen, Haltestellen nicht eingerechnet. Die schmalspurigen Privatbahnen haben in der Regel ein… …   Deutsch Wikipedia

• Keratoconus — Klassifikation nach ICD 10 H18.6 Keratokonus Z94.7 Zustand nach Keratoplastik …   Deutsch Wikipedia

• Vernetzungsbehandlung — Klassifikation nach ICD 10 H18.6 Keratokonus Z94.7 Zustand nach Keratoplastik …   Deutsch Wikipedia

• tektite — /tek tuyt/, n. Geol. any of several kinds of small glassy bodies, in various forms, occurring in Australia and elsewhere, now believed to have been produced by the impact of meteorites on the earth s surface. [1920 25; < Gk tekt(ós) molten +… …   Universalium

• Liste Des Communes De Suisse — par canton Appenzell Rhodes Intérieures • Appenzell Rhodes Extérieures • Argovie • Bâle Campagne • Bâle Ville • Berne • Fribourg • Genève • …   Wikipédia en Français