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2. Folded optics - Wikipedia

   en.wikipedia.org/wiki/Folded_optics

   These optical fold mirrors are not to be confused with the observatory's deployable primary mirrors, which are folded inward to fit the telescope within the launch vehicle's payload fairing; when deployed, these segments are part of the three-mirror anastigmat design's primary element and don't serve as fold mirrors in the optical sense.

3. A magnifying mirror is a travel must-have for anyone over the ...

   www.aol.com/lifestyle/a-magnifying-mirror-is-a...

   The Kintion Pocket Mirror provides a portable, two-sided compact (with each mirror side measuring a generous 3.3 by 2.5 inches) that is ideal for slipping into your purse or weekender. One side ...

4. Catadioptric system - Wikipedia

   en.wikipedia.org/wiki/Catadioptric_system

   This means the lens's F-number value is fixed to the overall designed focal ratio of the optical system (the diameter of the primary mirror divided into the focal length). The inability to stop down the lens results in the catadioptric lens having a short depth of field.

5. One-way mirror - Wikipedia

   en.wikipedia.org/wiki/One-way_mirror

   One-way mirrors for upper-level observation deck viewing down into a classroom (University of Wisconsin-Eau Claire) A one-way mirror, also called two-way mirror [1] (or one-way glass, half-silvered mirror, and semi-transparent mirror), is a reciprocal mirror that appears reflective from one side and transparent from the other. The perception of ...

6. This $35 mirror is 'like trying on clothes in a super fancy ...

   www.aol.com/lifestyle/gold-arch-mirror-walmart...

   Arched Full Length Mirror (59"x16") $35 $80 Save $45 This stunning floor-length mirror can be used in several ways: as a standing floor mirror, leaning against a wall or mounted onto the wall ...

7. Non-reversing mirror - Wikipedia

   en.wikipedia.org/wiki/Non-reversing_mirror

   The Museum of Illusions refers to this type of mirror as an "antigravity mirror" because as it rotates once around the line-of-sight axis, the reflected image rotates twice, appearing upside-down when the joint is horizontal. Another type of non-reversing mirror can be made by making the mirror concave (curved inward like a bowl).