Editing Chatoyancy (section)

==In woodworking==
Chatoyancy in wood occurs in various species<ref>{{Cite web |date=2022-05-24 |title=Woodworking word of the day: chatoyance {{!}} Wood |url=https://www.woodmagazine.com/wood-supplies/wood-figure/woodworking-word-of-the-day-chatoyance |access-date=3 August 2022 |website=WOOD Magazine |archive-date=24 May 2022 |archive-url=https://web.archive.org/web/20220524120813/https://www.woodmagazine.com/wood-supplies/wood-figure/woodworking-word-of-the-day-chatoyance |url-status=live }}</ref> – particularly [[hardwood]]s and the various types of [[Nanmu]] woods of China and South East Asia, particularly where stresses from the weight of the growing tree result in denser patches, or where stresses cause [[burl]] or ''[[Bird's eye figure|bird’s eye]]''. This ‘figure’, which has a striking three-dimensional appearance, is highly prized by woodworkers and their clients alike, and is featured regularly in furniture, musical instruments, and other decorative wood products. Figuring takes on a variety of forms and is referred to as ''flame'', ''ribbon'', ''tiger stripe'', ''quilting'', among other names.<ref>{{Cite web |date=2022-01-12 |title=What is Chatoyance? – PZC Chatometry |url=https://www.chatometry.com/what-is-wood-chatoyance/ |access-date=2022-05-24 |website= |archive-url=https://web.archive.org/web/20220112110143/https://www.chatometry.com/what-is-wood-chatoyance/ |archive-date=12 January 2022 |url-status=dead}}</ref>

This effect is sometimes called ''wet look'', since wetting wood with water often displays the chatoyancy, albeit only until the wood dries. Certain finishes cause the [[wood grain]] to become more pronounced. Oil finishes, [[epoxy]], and [[shellac]] can strongly bring out the ''wet look'' effect. When the refractive index of the finish nearly matches that of the wood, light scattering no longer occurs at the wood surface, adding the appearance of depth to the wood's figure.

=== Measurement ===
No method to measure wood chatoyance is unanimously accepted by the scientific community. Some methods have been proposed, such as one named PZC,<ref>{{Cite journal|last1=Pisani|first1=Paolo|last2=Zanetta|first2=Laura|last3=Codoro|first3=Davide|date=2021-12-29|title=Measuring wood chatoyance|url=https://doi.org/10.1080/17480272.2021.2018625|journal=Wood Material Science & Engineering|volume=18 |pages=277–288|doi=10.1080/17480272.2021.2018625|s2cid=245572069|issn=1748-0272|url-access=subscription}}</ref> which was used to measure typical values for a number of wood species; some results are reported below:<ref>{{Cite web|title=PZC Chatometry – A standard system to measure wood chatoyance|url=https://www.chatometry.com/|access-date=2022-01-03|language=it-IT}}</ref>

{| class="wikitable sortable" style="text-align:right;"
!Wood<br>(common name)
!PZC average
|-
|style="text-align:left;"|[[Afrormosia]]
|14.2
|-
|style="text-align:left;"|[[Afzelia]]
|14.1
|-
|style="text-align:left;"|[[Alder]]
|15.0
|-
|style="text-align:left;"|Alder, Red
|16.8
|-
|style="text-align:left;"|[[Anigre]]
|14.4
|-
|style="text-align:left;"|[[Fraxinus|Ash]], American White
|11.5
|-
|style="text-align:left;"|Ash, European
|12.8
|-
|style="text-align:left;"|Ash, Olive
|14.9
|-
|style="text-align:left;"|[[Beech]], European
|10.6
|-
|style="text-align:left;"|[[Birch]]
|18.3
|-
|style="text-align:left;"|[[Black Locust]]
|16.4
|-
|style="text-align:left;"|[[Bocote]]
|11.5
|-
|style="text-align:left;"|[[Bog-wood|Bog Oak]]
|11.6
|-
|style="text-align:left;"|[[Bubinga]]
|19.2
|-
|style="text-align:left;"|[[Cedrus|Cedar]], European
|7.6
|-
|style="text-align:left;"|Cedar, Spanish
|21.3
|-
|style="text-align:left;"|[[Cerejeira]]
|14.1
|-
|style="text-align:left;"|[[Cherry]], Black
|18.0
|-
|style="text-align:left;"|Cherry, Sweet
|15.7
|-
|style="text-align:left;"|[[Chestnut]], Sweet
|14.4
|-
|style="text-align:left;"|[[Cypress]], Mediterranean
|9.3
|-
|style="text-align:left;"|[[Ebony]], Macassar
|11.3
|-
|style="text-align:left;"|[[Elm]]
|14.5
|-
|style="text-align:left;"|[[Etimoe]]
|22.1
|-
|style="text-align:left;"|[[Eucalyptus]]
|13.9
|-
|style="text-align:left;"|[[Fir]], Douglas
|11.1
|-
|style="text-align:left;"|Fir, European Silver
|10.0
|-
|style="text-align:left;"|[[Brya ebenus|Granadillo]]
|14.3
|-
|style="text-align:left;"|[[Guarea]]
|17.2
|-
|style="text-align:left;"|[[Handroanthus|Ipe]]
|11.7
|-
|style="text-align:left;"|[[Iroko]]
|21.8
|-
|style="text-align:left;"|[[Hymenaea courbaril|Jatoba]]
|17.5
|-
|style="text-align:left;"|[[Khaya]]
|23.0
|-
|style="text-align:left;"|[[Koa]]
|26.4
|-
|style="text-align:left;"|[[Pterygota bequaertii|Koto]]
|12.5
|-
|style="text-align:left;"|[[Larch]], European
|10.9
|-
|style="text-align:left;"|[[Terminalia superba|Limba]]
|16.1
|-
|style="text-align:left;"|Limba, Black
|18.7
|-
|style="text-align:left;"|[[Tilia|Lime]], European
|12.2
|-
|style="text-align:left;"|[[Louro Faia]]
|17.4
|-
|style="text-align:left;"|[[Louro Preto]]
|11.3
|-
|style="text-align:left;"|[[Mahogany]], Honduras
|21.4
|-
|style="text-align:left;"|[[Makore]]
|21.0
|-
|style="text-align:left;"|[[Mansonia (plant)|Mansonia]]
|18.0
|-
|style="text-align:left;"|[[Maple]], European
|14.2
|-
|style="text-align:left;"|Maple, Hard
|16.1
|-
|style="text-align:left;"|[[Distemonanthus|Movingui]]
|15.3
|-
|style="text-align:left;"|[[Mulberry]]
|18.2
|-
|style="text-align:left;"|[[Oak]], Red
|12.2
|-
|style="text-align:left;"|Oak, Sessile
|12.6
|-
|style="text-align:left;"|[[Obeche]]
|11.1
|-
|style="text-align:left;"|[[Aucoumea klaineana|Okoume]]
|23.6
|-
|style="text-align:left;"|[[Olive]]
|8.3
|-
|style="text-align:left;"|[[Osage Orange]], Green
|17.0
|-
|style="text-align:left;"|[[Ovangkol]]
|20.0
|-
|style="text-align:left;"|[[Padouk]]
|17.4
|-
|style="text-align:left;"|[[Pear]]
|10.5
|-
|style="text-align:left;"|[[Pine]], Swiss Stone
|10.7
|-
|style="text-align:left;"|Pine, unspecified
|13.2
|-
|style="text-align:left;"|[[Populus|Poplar]]
|14.7
|-
|style="text-align:left;"|Poplar, Yellow
|11.9
|-
|style="text-align:left;"|[[Purpleheart]]
|13.7
|-
|style="text-align:left;"|[[Liquidambar styraciflua|Red Gum]]
|12.6
|-
|style="text-align:left;"|[[Rosewood]], Cocobolo
|9.5
|-
|style="text-align:left;"|Rosewood, Indian
|11.2
|-
|style="text-align:left;"|Rosewood, Kingwood
|14.3
|-
|style="text-align:left;"|Rosewood, Madagascar
|11.7
|-
|style="text-align:left;"|Rosewood, Santos
|12.5
|-
|style="text-align:left;"|[[Sapele]]
|20.7
|-
|style="text-align:left;"|[[Satinwood]]
|13.9
|-
|style="text-align:left;"|[[Spruce]], Fiemme
|9.3
|-
|style="text-align:left;"|[[Sucupira (hardwood)|Sucupira]]
|9.8
|-
|style="text-align:left;"|[[Teak]]
|15.7
|-
|style="text-align:left;"|[[Weinmannia trichosperma|Tineo]]
|14.7
|-
|style="text-align:left;"|[[Juglans|Walnut]], African
|20.2
|-
|style="text-align:left;"|Walnut, Black
|18.6
|-
|style="text-align:left;"|Walnut, European
|17.5
|-
|style="text-align:left;"|[[Wenge]]
|8.5
|-
|style="text-align:left;"|[[Yew]]
|9.8
|-
|style="text-align:left;"|[[Zebrawood]]
|19.1
|-
|style="text-align:left;"|[[Cordia dodecandra|Ziricote]]
|7.0
|}