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1. en.wikipedia.org › wiki › UltravioletUltraviolet - Wikipedia

   en.wikipedia.org › wiki › Ultraviolet

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   Hace 1 día · Ultraviolet rays are usually invisible to most humans. The lens of the human eye blocks most radiation in the wavelength range of 300–400 nm; shorter wavelengths are blocked by the cornea. [6] Humans also lack color receptor adaptations for ultraviolet rays. Nevertheless, the photoreceptors of the retina are sensitive to near-UV, and people lacking a lens (a condition known as aphakia ...

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