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2. Objects in mirror are closer than they appear - Wikipedia

   en.wikipedia.org/wiki/Objects_in_mirror_are...

   It is present because while these mirrors' convexity gives them a useful field of view, it also makes objects appear smaller. Since smaller-appearing objects seem farther away than they actually are, a driver might make a maneuver such as a lane change assuming an adjacent vehicle is a safe distance behind, when in fact it is quite a bit closer ...

3. List of instruments used in otorhinolaryngology, head and ...

   en.wikipedia.org/wiki/List_of_instruments_used...

   Head Mirror with head band: to focus light into the cavity under inspection; mirror is concave and is used with a Chiron lamp to produce a parallel beam of light; doctor views through the hole (average diameter of mirror is 3 & 1/2" & that of hole is 1/4") Head mounted lights with head band: to focus light into the cavity under inspection ...

4. Magnifying glass - Wikipedia

   en.wikipedia.org/wiki/Magnifying_glass

   A pen seen through a magnifying glass Jim Hutton as detective Ellery Queen, posing with a magnifying glass. A magnifying glass is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle. Beyond its primary function of magnification, this simple yet ingenious tool serves a ...

5. Bell X-5 - Wikipedia

   en.wikipedia.org/wiki/Bell_X-5

   A composite photograph showing the Bell X-5’s variable-sweep wing. The Bell X-5 was the first aircraft capable of changing the sweep of its wings in flight.It was inspired by the untested wartime P.1101 design of the German Messerschmitt company.

6. Magnification - Wikipedia

   en.wikipedia.org/wiki/Magnification

   A telescope, which uses its large objective lens or primary mirror to create an image of a distant object and then allows the user to examine the image closely with a smaller eyepiece lens, thus making the object look larger. A microscope, which makes a small object appear as a much larger image at a comfortable distance for viewing. A ...

7. Digital micromirror device - Wikipedia

   en.wikipedia.org/wiki/Digital_micromirror_device

   Diagram of a digital micromirror showing the mirror mounted on the suspended yoke with the torsion spring running bottom left to top right (light grey), with the electrostatic pads of the memory cells below (top left and bottom right) The mirrors themselves are made of aluminum and are around 16 micrometers across.