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2. Vortex Optics - Wikipedia

   en.wikipedia.org/wiki/Vortex_Optics

   Vortex Optics is a DBA of Sheltered Wings, Inc., which was incorporated in Wisconsin in 1989. Sheltered Wings, Inc. DBA Vortex Optics began in 2002. In 2022 after extensive research, testing and reviews Vortex became an official supplier and contractor to the American Military as the U.S. Army selected Vortex‘s XM-157 fire control system for its Next Generation Squad Weapon program.

3. 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 .

4. List of equipment of the Hellenic Army - Wikipedia

   en.wikipedia.org/wiki/List_of_equipment_of_the...

   Greece: 5.56×45mm NATO: Equipped with night vision binoculars NS467C by THEON Sensors.The first 750 pieces are available in two versions (Standard) and (PARA). The remaining 2,320 are MINIMI Mk. 2 with the same number of night-vision binoculars of third generation NS 685C made by THEON Sensors. 1,274 more on order.

5. Scope mount - Wikipedia

   en.wikipedia.org/wiki/Scope_mount

   From left: A sketch of a cross section on a Zeiss rail and ring mount, both with a Picatinny rail interface. Scope mounts are rigid implements used to attach (typically) a telescopic sight or other types of optical sights onto a firearm. The mount can be made integral to the scope body (such as the Zeiss rail) or, more commonly, an external ...

6. Vortex-induced vibration - Wikipedia

   en.wikipedia.org/wiki/Vortex-induced_vibration

   Vortex-induced vibration (VIV) is an important source of fatigue damage of offshore oil exploration drilling, export, production risers, including steel catenary risers (SCRs) and tension leg platform (TLP) tendons or tethers. These slender structures experience both current flow and top-end vessel motions, which both give rise to the flow ...

7. Vortex tube - Wikipedia

   en.wikipedia.org/wiki/Vortex_tube

   Vortex tube. The vortex tube, also known as the Ranque-Hilsch vortex tube, is a mechanical device that separates a compressed gas into hot and cold streams. The gas emerging from the hot end can reach temperatures of 200 °C (390 °F), and the gas emerging from the cold end can reach −50 °C (−60 °F). [1] It has no moving parts and is ...