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2. Bicycle lighting - Wikipedia

   en.wikipedia.org/wiki/Bicycle_lighting

   Red light on the back of a bicycle Early bicycle lighting: candle lamps, oil lamps and carbide lamps Early bicycle lamps and two early bottle dynamos (1935). Bicycle lighting is illumination attached to bicycles whose purpose above all is, along with reflectors, to improve the visibility of the bicycle and its rider to other road users under circumstances of poor ambient illumination.

3. List of bicycle-sharing systems - Wikipedia

   en.wikipedia.org/wiki/List_of_bicycle-sharing...

   The following table lists bicycle-sharing systems around the world. Most systems listed allow users to pick up and drop off bicycles at any of the automated stations within the network (denoted as 3 Gen.).

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. 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.

6. Sidecar - Wikipedia

   en.wikipedia.org/wiki/Sidecar

   The sidecar consists of a frame and of a body. The frame may either be fixed to the bike, or it may be attached in a way which makes the bike able to lean in the same manner as bikes without sidecars. [5] Also, Ural had a reversible sidecar for the European market. The body typically provides one passenger seat and a small trunk compartment behind.

7. Retroreflector - Wikipedia

   en.wikipedia.org/wiki/Retroreflector

   A set of three mutually perpendicular reflective surfaces, placed to form the internal corner of a cube, work as a retroreflector. The three corresponding normal vectors of the corner's sides form a basis (x, y, z) in which to represent the direction of an arbitrary incoming ray, [a, b, c].