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2. Spacer patterning - Wikipedia

   en.wikipedia.org/wiki/Spacer_patterning

   Spacer patterning is a technique employed for patterning features with linewidths smaller than can be achieved by conventional lithography. In the most general sense, the spacer is a layer that is deposited over a pre-patterned feature, often called the mandrel. The spacer is subsequently etched back so that the spacer portion covering the ...

3. Shim (spacer) - Wikipedia

   en.wikipedia.org/wiki/Shim_(spacer)

   Shim (spacer) Mounting a tile spacer. A shim is a thin and often tapered or wedged piece of material, used to fill small gaps or spaces between objects. [1] Shims are typically used in order to support, adjust for better fit, or provide a level surface. Shims may also be used as spacers to fill gaps between parts subject to wear.

4. Einstein problem - Wikipedia

   en.wikipedia.org/wiki/Einstein_problem

   Aperiodic tiling with "Tile(1,1)". The tiles are colored according to their rotational orientation modulo 60 degrees. [1] ( Smith, Myers, Kaplan, and Goodman-Strauss) In plane geometry, the einstein problem asks about the existence of a single prototile that by itself forms an aperiodic set of prototiles; that is, a shape that can tessellate space but only in a nonperiodic way.

5. Space Shuttle Atlantis - Wikipedia

   en.wikipedia.org/wiki/Space_Shuttle_Atlantis

   Space Shuttle Atlantis (Orbiter Vehicle designation: OV‑104) is a retired Space Shuttle orbiter vehicle which belongs to NASA, the spaceflight and space exploration agency of the United States. [ 1] Atlantis was manufactured by the Rockwell International company in Southern California and was delivered to the Kennedy Space Center in Eastern ...

6. Invader (artist) - Wikipedia

   en.wikipedia.org/wiki/Invader_(artist)

   Invader's Pac-Man mosaics in Bilbao (BBO 24–27), near the Guggenheim Museum. Invader is a pseudonymous French street artist identified as Franck Slama. He is known for his ceramic tile mosaics modeled on the pixelated art of 1970s–1980s 8-bit video games, many of which depict the titular aliens from the arcade games Space Invaders, Pac-Man and Super Mario Bros. (the inspirations for his ...

7. Space Shuttle thermal protection system - Wikipedia

   en.wikipedia.org/wiki/Space_Shuttle_thermal...

   The HRSI tile was composed of high purity silica fibers. Ninety percent of the volume of the tile was empty space, giving it a very low density (9 lb/cu ft or 140 kg/m 3) making it light enough for spaceflight. [1] The uncoated tiles were bright white in appearance and looked more like a solid ceramic than the foam-like material that they were.

8. Rebar spacer - Wikipedia

   en.wikipedia.org/wiki/Rebar_spacer

   Rebar spacer. A concrete spacer with a plastic clip in use on the side of the formwork. A rebar spacer is a short, rod-like device used to secure reinforcing steel bars, or rebar, within cast assemblies for reinforced concrete structures. The rebar spacers are fixed before the concrete is poured and remain within structure.

9. File:TileSpacer.jpg - Wikipedia

   en.wikipedia.org/wiki/File:TileSpacer.jpg

   Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.