by J Xu · 2019 · Cited by 53 — Herein, a metasurface antenna is proposed to simplify the conventional metasurface and decrease the divergence angle of a generated OAM beam. In the structure ...

Light source safety shutters can be used to block a light sources output without turning off the lamp, and to obtain radiometric zero in order to ...

A simple, therapeutic, inexpensive, way to correct several visual disorders. • Provide an immediate correction. • They are more comfortable, more cosmetically ...

Multispectral imaging is used to assess the health of crops like corn, because the different wavelengths of light reveal different information about the plants.

Brand: Park Tool, Product: P-Handled Hex Wrench (2.5mm) ... These top-shelf Allen wrenches come with offset handles made from durable nylon in a ...

Item number: 00016709 EDP number: 16709 Designation: LCMF130404-0400-FT Ansi designation: LCMF130404-0400-FT Tool type: Insert Grade: CP500 Minimum sales quantity: 10 GDG code: A72 - MDT CARBIDE/CERMET

UV filter removes ultraviolet rays from light (that we get from sun). · You can think of UV filter doing a couple of things - · One should have at ...

Aspherical lenses are curved outwards on their rear element so that they can better direct light rays into a single focal point. These counter-curves help ...

Marking central servers (e.g. Sable, Backstitching, etc.) For Shaper, they're known for: R&D threat (e.g. Deep Dive, Conduit, Maker's Eye, ...

An anti-reflection coating (AR coating) is a dielectric thin-film coating applied to an optical surface in order to reduce the reflectance (also often called ...

One of the advantages of observing in the near-infrared is that dust is transparent to it. This is why an optical telescope would be unable to see a star ...