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2. Vortex Optics - Wikipedia

   en.wikipedia.org/wiki/Vortex_Optics

   Vortex Optics is an American manufacturer of special optical equipments for hunting, wildlife watching, outdoor recreation, shooting sports and law enforcement and military. [ 1] Vortex products include binoculars, spotting scopes, riflescopes, reflex sights, holographic sights and other accessories. It once had a sister company known as Eagle ...

3. NOBLEX E-Optics GmbH - Wikipedia

   en.wikipedia.org/wiki/NOBLEX_E-Optics_GmbH

   NOBLEX E-Optics GmbH, formerly Docter Optics, is a German manufacturer of optics, including binoculars, rifle scopes, spotting scopes, red dot sights, flashlights and reading glasses. Its headquarters are in Eisfeld, Thuringia, Germany, where most of the products are developed and manufactured. Docter is part of the Analytik Jena Group.

4. Monocular - Wikipedia

   en.wikipedia.org/wiki/Monocular

   Galilean type Soviet-made miniature 2.5 × 17.5 monocular Diagram of a monocular using a Schmidt-Pechan prism: 1 – Objective lens 2 – Schmidt-Pechan prism 3 – Eyepiece. A monocular is a compact refracting telescope used to magnify images of distant objects, typically using an optical prism to ensure an erect image, instead of using relay lenses like most telescopic sights.

5. Optical vortex - Wikipedia

   en.wikipedia.org/wiki/Optical_vortex

   An optical vortex (also known as a photonic quantum vortex, screw dislocation or phase singularity) is a zero of an optical field; a point of zero intensity. The term is also used to describe a beam of light that has such a zero in it. The study of these phenomena is known as singular optics .

6. Bitis nasicornis - Wikipedia

   en.wikipedia.org/wiki/Bitis_nasicornis

   Bitis nasicornis — Büttikofer, 1890. Bitis nasicornis — Boulenger, 1896. Bitis nasicornis is a viper species belonging to the genus Bitis, part of a subfamily known as "puff-adders", [ 3] found in the forests of West and Central Africa. [ 1][ 2][ 4] This large viper is known for its striking coloration and prominent nasal "horns". [ 5] No ...

7. Kármán vortex street - Wikipedia

   en.wikipedia.org/wiki/Kármán_vortex_street

   Visualisation of the vortex street behind a circular cylinder in air; the flow is made visible through release of glycerol vapour in the air near the cylinder. In fluid dynamics, a Kármán vortex street (or a von Kármán vortex street) is a repeating pattern of swirling vortices, caused by a process known as vortex shedding, which is responsible for the unsteady separation of flow of a fluid ...