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Photics vs Photids - What's the difference?

photics | photids |

As nouns the difference between photics and photids

is that photics is the science of light while photids is .

photics

English

Noun

(-)
  • The science of light.
    • (Knight)

    Usage notes

    * A general term sometimes employed when (optics) is restricted to light as producing vision. (Webster 1913)

    photids

    English

    Noun

    (head)