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2. Grating - Wikipedia

   en.wikipedia.org/wiki/Grating

   The grating profile is the function of the reflectance or transmittance perpendicular to the lines. This function is generally a square wave, in that every transition between lines is abrupt. A grating can be defined by six parameters: Spatial frequency is the number of cycles occupying a particular distance (e.g. 10 line pairs per millimeter ...

3. Fastener - Wikipedia

   en.wikipedia.org/wiki/Fastener

   The major grade used in stainless steel fasteners: 200 series, 300 series, and 400 series. Titanium, aluminium, and various alloys are also common materials of construction for metal fasteners. In many cases, special coatings or plating may be applied to metal fasteners to improve their performance characteristics by, for example, enhancing ...

4. SAE 316L stainless steel - Wikipedia

   en.wikipedia.org/wiki/SAE_316L_stainless_steel

   SAE 316L grade stainless steel, sometimes referred to as A4 stainless steel or marine grade stainless steel, is the second most common austenitic stainless steel after 304/A2 stainless steel. Its primary alloying constituents after iron , are chromium (between 16–18%), nickel (10–12%) and molybdenum (2–3%), up to 2% manganese , [ 1 ] with ...

5. Welded wire mesh - Wikipedia

   en.wikipedia.org/wiki/Welded_wire_mesh

   The welded wire mesh is a metal wire screen that is made up of low carbon steel wire or stainless steel wire. It is available in various sizes and shapes. It is widely used in agricultural, industrial, transportation, horticultural and food procuring sectors. It is also used in mines, gardening, machine protection and other decorations.

6. A Tiny Apelike Humanoid May Still Be Living in Plain Sight ...

   www.aol.com/lifestyle/tiny-apelike-humanoid-may...

   An archaeologist believes the tiny humanoid species Homo floresiensis may still exist in Indonesia. Here's how they could have survived in secluded areas.

7. 2024 has been a nerve-wracking year for plane travel. How ...

   www.aol.com/finance/2024-nerve-wracking-plane...

   Anxious airline flyers may well remember 2024 as the year their worst fears about the safety of air travel felt confirmed, as a series of unprecedented, and in some cases fatal, airplane incidents ...