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Interferometer
Answer for the clue "Interferometer ", 6 letters:
etalon
Word definitions for etalon in dictionaries
Wiktionary
Word definitions in Wiktionary
n. An optical device containing parallel mirrors, used in laser design to delay light.
Usage examples of etalon.
As the atmosphere cycled out, Papa described the repair procedure involving the replacement of a piece of molding, adjustment of a Fabry-Perot tuning etalon, and a system diagnostic to confirm the fix.
Finally he reached the point of adjusting the etalon, meticulous work wherein the plates had to be aligned just right to select the frequencies required.
The final adjustment of the etalon resisted Fisher, the interference fringes drifting from their operational points before he could lock down the system.