Fraunhofer's lines

Definitions

  • Chambers's Twentieth Century Dictionary
    • Fraunhofer's lines the dark lines observed crossing the sun's spectrum at right angles to its length—from the Bavarian optician, Joseph von Fraunhofer (1787-1826)
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Etymology

Chambers's Twentieth Century Dictionary
A.S. líne—L. linealinum, flax.

Usage

In literature:

But from that time they were called Fraunhofer's dark lines.
"Inventions in the Century" by William Henry Doolittle
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