Coddington magnifier

名词 n.
中文释义

英文释义

名词 n.
  1. A magnifying glass consisting of a single thick lens with a central deep groove diaphragm at the equator, limiting the rays to those close to the axis and minimizing spherical aberration.

词形变化

Coddington magnifiers plural

词源

Popularized and refined by Henry Coddington.
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