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2. Window screen - Wikipedia

   en.wikipedia.org/wiki/Window_screen

   An 18×14 mesh has become standard; 16×16 was formerly common and other common sizes are 18×18 and 20×20. For comparison, a typical screen in a clothes dryer has a nylon 23x23 mesh screen. Fiberglass solar screens provide over 75% of UV protection, by using thicker strands and a closer mesh than regular 18x14 fiberglass window screening ...

3. Faraday cage - Wikipedia

   en.wikipedia.org/wiki/Faraday_cage

   Faraday cages cannot block stable or slowly varying magnetic fields, such as the Earth's magnetic field (a compass will still work inside one). To a large degree, however, they shield the interior from external electromagnetic radiation if the conductor is thick enough and any holes are significantly smaller than the wavelength of the radiation.

4. Door - Wikipedia

   en.wikipedia.org/wiki/Door

   A sliding glass door, sometimes called an Arcadia door or patio door, is a door made of glass that slides open and sometimes has a screen (a removable metal mesh that covers the door). Australian doors are a pair of plywood swinging doors often found in Australian public houses.

5. Electromagnetic lock - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_lock

   The principle behind an electromagnetic lock is the use of electromagnetism to lock a door when energized. The holding force should be collinear with the load, and the lock and armature plate should be face-to-face to achieve optimal operation. The magnetic lock relies upon some of the basic concepts of electromagnetism.

6. Cathode-ray tube - Wikipedia

   en.wikipedia.org/wiki/Cathode-ray_tube

   The shadow mask is installed to the screen using metal pieces [348] or a rail or frame [349] [350] [351] that is fused to the funnel or the screen glass respectively, [256] holding the shadow mask in tension to minimize warping (if the mask is flat, used in flat-screen CRT computer monitors) and allowing for higher image brightness and contrast.

7. Glossary of aerospace engineering - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_aerospace...

   Magnetic sail – or magsail, is a proposed method of spacecraft propulsion which would use a static magnetic field to deflect charged particles radiated by the Sun as a plasma wind, and thus impart momentum to accelerate the spacecraft. [150] [151] A magnetic sail could also thrust directly against planetary and solar magnetospheres.