principal ray
noun
2
: the one ray of the rays entering an optical instrument from any given point of the object that passes through the exact center of the aperture stop
Dictionary Entries Near principal ray
Cite this Entry
“Principal ray.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/principal%20ray. Accessed 22 Nov. 2024.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share