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2. Cheval mirror - Wikipedia

   en.wikipedia.org/wiki/Cheval_mirror

   The size of individual mirrors was still small: the 17 seemingly large window-like panes in the Hall of Mirrors are in fact stitched from 357 small pieces of mirror glass. [12] In 1687, Bernard Perrot [ fr ] developed a process of glass casting that enabled first truly large glass mirrors, impossible to make using the traditional glass blowing ...

3. Hale Telescope - Wikipedia

   en.wikipedia.org/wiki/Hale_Telescope

   The Hale's 200 in (510 cm) mirror was near the technological limit of a primary mirror made of a single rigid piece of glass. [ 22 ] [ 23 ] Using a monolithic mirror much larger than the 5-meter Hale or 6-meter BTA-6 is prohibitively expensive due to the cost of both the mirror, and the massive structure needed to support it.

4. Mirror - Wikipedia

   en.wikipedia.org/wiki/Mirror

   A mirror reflecting the image of a vase A first-surface mirror coated with aluminium and enhanced with dielectric coatings. The angle of the incident light (represented by both the light in the mirror and the shadow behind it) exactly matches the angle of reflection (the reflected light shining on the table). 4.5-metre (15 ft)-tall acoustic mirror near Kilnsea Grange, East Yorkshire, UK, from ...

5. K-Mirror (optics) - Wikipedia

   en.wikipedia.org/wiki/K-Mirror_(Optics)

   A K-mirror is a system of 3 plane mirrors mounted on a common motor axis which runs parallel to the chief ray of the system. If looking at the system parallel to the mirror surfaces, where only the edges of the mirrors remain visible, the middle mirror and the front and back mirror look like the backbone and legs of a capital-K; this illustrates the origin of the name.

6. PDF - Wikipedia

   en.wikipedia.org/wiki/PDF

   Interactive Forms is a mechanism to add forms to the PDF file format. PDF currently supports two different methods for integrating data and PDF forms. Both formats today coexist in the PDF specification: [38] [53] [54] [55] AcroForms (also known as Acrobat forms), introduced in the PDF 1.2 format specification and included in all later PDF ...

7. Mirror image - Wikipedia

   en.wikipedia.org/wiki/Mirror_image

   In geometry, the mirror image of an object or two-dimensional figure is the virtual image formed by reflection in a plane mirror; it is of the same size as the original object, yet different, unless the object or figure has reflection symmetry (also known as a P-symmetry).