Scheerer's phenomenon

Dictionary of Hallucinations. . 2010.

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  • Blue field entoptic phenomenon — The blue field entoptic phenomenon or Scheerer s phenomenon is the appearance of tiny bright dots moving quickly along squiggly lines in the visual field, especially when looking into blue light (such as the sky). [Scheerer R., Die entoptische… …   Wikipedia

  • blue-field entoptic phenomenon —    Also known as Scheerer s phenomenon, after the German ophthalmologist Richard Scheerer. Both terms refer to an * entoptic phenomenon characterized by tiny bright dots moving quickly and semi randomly across the visual field, especially when… …   Dictionary of Hallucinations

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  • Pyrognomic — materials are easily made incandescent. Minerals and metals commonly glow when heated, but those that are pyrognomic glow at much lower temperatures. Allanite and gadolinite are examples of pyrognomic minerals. The term was introduced by Scheerer …   Wikipedia

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