Desk Lamp

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A lamp is mounted on a support consisting of two four-bar linkages. The orientation of lamp remains constant while tilting and turning the linkage, although the lamp can be adjusted separately. The whole support can be rotated around a vertical fulcrum, which protrudes from a base.
Contributed by: Sándor Kabai (November 2008)
Open content licensed under CC BY-NC-SA
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"Desk Lamp"
http://demonstrations.wolfram.com/DeskLamp/
Wolfram Demonstrations Project
Published: November 10 2008