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The flip-disc display (or flip-dot display) is an electromechanical dot matrix display technology used for large outdoor signs, normally those that will be exposed to direct sunlight. Flip-disc technology has been used for external destination signs on buses and trains across North America , Europe and Australia , as well as for variable ...
12 L. 13 M. 14 N. 15 O. 16 P. 17 R. 18 S. 19 T. 20 U. 21 V. 22 W. 23 X. 24 Y. ... Radiologic signs are the signs used for diagnosing physiological and pathological ...
The sign is not to be confused with the fallout shelter identification sign introduced by the Office of Civil Defense in 1961. This was originally intended to be the same as the radiation hazard symbol but was changed to a slightly different symbol because shelters are a place of safety, not of hazard. [6] [12]
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Magnetism is the class of physical attributes that occur through a magnetic field, which allows objects to attract or repel each other.Because both electric currents and magnetic moments of elementary particles give rise to a magnetic field, magnetism is one of two aspects of electromagnetism.
The games were sold online at walmart.com in a blue box with the word “Magnetic” on the front and back, according to the CPSC. Consumers should immediately stop using this magnetic game due to ...
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