See equiconcave on Wiktionary
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"etymology_text": "From equi- + concave.",
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"form": "more equiconcave",
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"ref": "1901, William Benjamin Carpenter, William Henry Dallinger, The Microscope and Its Revelations, page 22:",
"text": "In an equiconcave lens the foci are virtual and are crossed over; thus, the lens in fig. 25A is equiconcave, the focus F, instead of being measured from A to the right hand, must be measured to the left hand; consequently, § of the thickness must be subtracted from the focal length in order to determine the distance of F from the surface of the lens.",
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{
"ref": "2022 October 4, Samantha Strong, Introduction to Visual Optics, Elsevier Health Sciences, →ISBN, page 202:",
"text": "In an equiconcave lens, the back surface would have a positive radius of curvature.",
"type": "quote"
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{
"ref": "2024, YCT Expert Team, Physics Unsolved Papers, Youth Competition Times, page 215:",
"text": "A thin equiconvex lens of radius of curvature R made of material of refractive index μ₁ is kept coaxially, in contact with an equiconcave lens of the same radius of curvature and refractive index μ₂ (> μ₁).",
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"Having surfaces with the same concave radius of curvature."
],
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"(optics, of a lens) Having surfaces with the same concave radius of curvature."
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}
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{
"code": "it",
"lang": "Italian",
"sense": "Translations",
"word": "equiconcavo"
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"feminine plural of equiconcavo"
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"id": "en-equiconcave-it-adj-YNAy3Esy",
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"ref": "1901, William Benjamin Carpenter, William Henry Dallinger, The Microscope and Its Revelations, page 22:",
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},
{
"ref": "2024, YCT Expert Team, Physics Unsolved Papers, Youth Competition Times, page 215:",
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"code": "it",
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"sense": "Translations",
"word": "equiconcavo"
},
{
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"word": "equiconcave"
}
Download raw JSONL data for equiconcave meaning in All languages combined (3.1kB)
This page is a part of the kaikki.org machine-readable All languages combined dictionary. This dictionary is based on structured data extracted on 2024-12-21 from the enwiktionary dump dated 2024-12-04 using wiktextract (d8cb2f3 and 4e554ae). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.
If you use this data in academic research, please cite Tatu Ylonen: Wiktextract: Wiktionary as Machine-Readable Structured Data, Proceedings of the 13th Conference on Language Resources and Evaluation (LREC), pp. 1317-1325, Marseille, 20-25 June 2022. Linking to the relevant page(s) under https://kaikki.org would also be greatly appreciated.