51Թ

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echelette

[esh-uh-let, ey-shuh-]

noun

Spectography.

  1. a diffraction grating designed to reflect infrared radiation.

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51Թ History and Origins

Origin of echelette1

< French éٳٱ rack, equivalent to é ladder ( echelon ) + -ette -ette

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Echegaray y Eizaguirreechelon

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