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Reading stone

Reading stone

Optical device.

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Readers' pathsAug 2026 – Oct 2026

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Readers come from

Share of the 2,171 readers arriving from another article

  1. Glasses

    Form of vision aid.

    69%

  2. Abbas ibn Firnas

    9th-century astronomer and physician.

    17%

  3. Lens

    Optical device which transmits and refracts light.

    4.6%

  4. Visby lenses

    Medieval Viking artefacts.

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    Convex lens used to magnify images.

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