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- Sundial (16148 bytes)
7: ...en designs, such as the 'ordinary' or standard garden sundial, cast a shadow on a flat surface marked ...
9: However, sundials can be designed for any surface where a fixed object casts ...
11: Most sundial designs indicate [[solar time|apparent solar time]].
12: Minor design variations can measure standard and daylight ...
14: Sundials are known from ancient Egypt, and were developed further by other cultures, including the [... - Shadow mask (2096 bytes)
1: ... ensuring that [[electron]]s from the tube's cathode gun reach the appropriately-colored portion of th...
5: ...allows displays made with this technology to provide a clearer, more accurate picture. It also reduce...
7: ...al display]] (LCD) monitors and other flat-screen designs now challenges both aperture grille and shad...
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