principal section

noun

1
: a plane passing through the optical axis of a crystal
specifically : the principal plane that contains either the wave normal or the ray of light under discussion
2
: a plane perpendicular to the edge of an optical prism

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Dictionary Entries Near principal section

Cite this Entry

“Principal section.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/principal%20section. Accessed 21 Nov. 2024.

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