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2. Plane mirror - Wikipedia

   en.wikipedia.org/wiki/Plane_mirror

   A plane mirror is a mirror with a flat reflective surface. [ 1 ] [ 2 ] For light rays striking a plane mirror, the angle of reflection equals the angle of incidence. [ 3 ] The angle of the incidence is the angle between the incident ray and the surface normal (an imaginary line perpendicular to the surface).

3. Mirror image - Wikipedia

   en.wikipedia.org/wiki/Mirror_image

   Thus reflection is a reversal of the coordinate axis perpendicular to the mirror's surface. Although a plane mirror reverses an object only in the direction normal to the mirror surface, this turns the entire three-dimensional image seen in the mirror inside-out, so there is a perception of a left-right reversal. Hence, the reversal is somewhat ...

4. Euler's Disk - Wikipedia

   en.wikipedia.org/wiki/Euler's_Disk

   A clean US Quarter (minted 1970–2022), rotating on a flat hand mirror, viewed from the side near the mirror surface, demonstrates the phenomenon for a few seconds. Lit by a point source directly over the center of the soon to settle quarter, side ridges are illuminated when the rotation axis is away from the viewer, and in shadow when the ...

5. Virtual image - Wikipedia

   en.wikipedia.org/wiki/Virtual_image

   The image in a plane mirror is not magnified (that is, the image is the same size as the object) and appears to be as far behind the mirror as the object is in front of the mirror. A diverging lens (one that is thicker at the edges than the middle) or a concave mirror forms a virtual image. Such an image is reduced in size when compared to the ...

6. Heliostat - Wikipedia

   en.wikipedia.org/wiki/Heliostat

   Because of the disadvantages, this design has never been commonly used, but some people do experiment with it. Typically, the heliostat mirror moves at a rate that is 1/2 the angular motion of the Sun. There is another arrangement that satisfies the definition of a heliostat yet has a mirror motion that is 2/3rd of the motion of the Sun. [14]

7. Infinity mirror - Wikipedia

   en.wikipedia.org/wiki/Infinity_mirror

   A self-contained infinity mirror used as a wall decoration. In a classic self-contained infinity mirror, a set of light bulbs, LEDs, or other point-source lights are placed around the periphery of a fully reflective mirror, and a second, partially reflective "one-way mirror" is placed a short distance in front of it, in a parallel alignment.

8. 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 ...

9. Reflecting telescope - Wikipedia

   en.wikipedia.org/wiki/Reflecting_telescope

   A convex secondary mirror is placed just to the side of the light entering the telescope, and positioned afocally so as to send parallel light on to the tertiary. The concave tertiary mirror is positioned exactly twice as far to the side of the entering beam as was the convex secondary, and its own radius of curvature distant from the secondary.