Documentation
Represents | mass (Q11423) |
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Data type | Quantity |
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Template parameter | Many |
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Domain | Everything with mass
(note: this should be moved to the property statements) |
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Allowed units | Instances of: unit of mass electronvolt per speed of light squared (Q108888186), pound (Q100995), solar mass (Q180892), dalton (Q483261), yottagram (Q613726), Jupiter mass (Q651336), long ton (Q667419), Earth mass (Q681996), centner (Q940052), megagram (Q11776930), kilogram (Q11570), gram (Q41803), ounce (Q48013), tonne (Q191118), kilodalton (Q14623804), kiloelectronvolt per speed of light squared (Q108888198), megaelectronvolt per speed of light squared (Q108888206), gigaelectronvolt per speed of light squared (Q108888224), ton (Q11247037), milligram (Q3241121), zettagram (Q14754979), exagram (Q2655272), teragram (Q1770733), petagram (Q2612219), stone (Q1131660), short ton (Q469356), ronnagram (Q115359865), quettagram (Q115359866) or carat (Q261247) |
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Example | Pluto (Q339) → 13.05 yottagram Sage Canaday (Q20821793) → 150 pound Honda CBR600F4 (Q5892269) → 170 kilogram Higgs boson (Q402) → 124.97 gigaelectronvolt per speed of light squared |
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Tracking: same | no label (Q38403064) |
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Tracking: differences | no label (Q38403066) |
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Tracking: usage | Category:Pages using Wikidata property P2067 (Q21037787) |
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Tracking: local yes, WD no | no label (Q38403070) |
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Lists |
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Living people protection class | property likely to be challenged (Q44597997), property that may violate privacy (Q44601380) |
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Proposal discussion | Proposal discussion |
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Current uses | Total | 1,584,177 | | Main statement | 1,583,840 | >99.9% of uses | Qualifier | 333 | <0.1% of uses | Reference | 4 | <0.1% of uses |
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[
create Create a translatable help page (preferably in English) for this property to be included here]
Units: “electronvolt per speed of light squared (Q108888186), pound (Q100995), solar mass (Q180892), dalton (Q483261), yottagram (Q613726), Jupiter mass (Q651336), long ton (Q667419), Earth mass (Q681996), centner (Q940052), megagram (Q11776930), kilogram (Q11570), gram (Q41803), ounce (Q48013), tonne (Q191118), kilodalton (Q14623804), kiloelectronvolt per speed of light squared (Q108888198), megaelectronvolt per speed of light squared (Q108888206), gigaelectronvolt per speed of light squared (Q108888224), ton (Q11247037), milligram (Q3241121), zettagram (Q14754979), exagram (Q2655272), teragram (Q1770733), petagram (Q2612219), stone (Q1131660), short ton (Q469356), ronnagram (Q115359865), quettagram (Q115359866), carat (Q261247)”: value unit must be one of listed. (
Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: Hello Kitty (Q191794), Basshunter (Q383541) List of violations of this constraint: Database reports/Constraint violations/P2067#Units
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This property is being used by:
- ru:Шаблон:Карточка фотоаппарата
- ru:Шаблон:Сотовый телефон
- ru:Шаблон:Мобильное устройство
- ru:Шаблон:Футболист
- ru:Шаблон:Гандболист, ru:Шаблон:Спутник
- be:Шаблон:Гандбаліст, be:Шаблон:Спадарожнік, be:Шаблон:Футбаліст, be:Шаблон:Хакеіст2
- da:Skabelon:Infoboks person, da:Skabelon:Infoboks Wikidata person, da:Skabelon:Infoboks grundstof
- en:Template:Infobox sportsperson/Wikidata
- eu:Txantiloi:Biografia infotaula automatikoa, eu:Txantiloi:Gimnasta infotaula, eu:Txantiloi:Arma infotaula, eu:Txantiloi:Astronomia infotaula, eu:Txantiloi:Objektu astronomiko infotaula, eu:Txantiloi:Sendagai infotaula, eu:Txantiloi:Teleskopio infotaula, eu:Txantiloi:Pertsonaia infotaula, eu:Txantiloi:Konposatu kimiko infotaula/probak, eu:Txantiloi:Aireontzi infotaula automatikoa, eu:Txantiloi:Taxotaula automatikoa, eu:Txantiloi:Taxotaula/probak, eu:Txantiloi:Izar infotaula
- fr:Modèle:Infobox Gymnaste, fr:Modèle:Infobox Famille Pokémon/Espèce/Bac à sable, fr:Modèle:Infobox Sportif, fr:Modèle:Infobox Patineur artistique, fr:Modèle:Infobox Combiné nordique, fr:Modèle:Infobox Étoile/Wikidata
- hu:Sablon:Autó infobox, hu:Sablon:Autóbusz infobox, hu:Sablon:Labdarúgó infobox, hu:Sablon:Személy infobox, hu:Sablon:Vasúti jármű infobox, hu:Sablon:Híres állat infobox, hu:Sablon:Baseballozó infobox, hu:Sablon:Csillag infobox, hu:Sablon:Vívó infobox, hu:Sablon:Műhold infobox, hu:Sablon:Égitest infobox, hu:Sablon:Motorkerékpár infobox, hu:Sablon:Mobiltelefon infobox
- it:Template:Infobox missione spaziale, it:Template:Infobox sportivo rugby a 15, it:Template:Sportivo, it:Template:Modello, it:Template:Infobox rugbista a 13 e a 15, it:Template:Pornostar, it:Template:Telefono cellulare, it:Template:Missione spaziale, it:Template:Rugbista a 13 e a 15, it:Template:Sportivo rugby a 15
- no:Mal:Infoboks småplanet, no:Mal:Stjerneboks detaljer, no:Mal:Infoboks teleskop, no:Mal:Infoboks legemiddel, no:Mal:Wikidata Infobox/core
- ru:Шаблон:Звезда
- uk:Шаблон:Футболіст, uk:Шаблон:Спортсмен, uk:Шаблон:Картка:Модель, uk:Шаблон:Особа, uk:Шаблон:Тенісист, uk:Шаблон:Альпініст, uk:Шаблон:Картка:Легкоатлет, uk:Шаблон:Infobox animal, uk:Шаблон:Стільниковий телефон, uk:Шаблон:Картка:Автомобіль, uk:Шаблон:Пристрій, uk:Шаблон:Футболіст/пісочниця, uk:Шаблон:Комета, uk:Шаблон:Спортсмен/пісочниця
- he:תבנית:גלקסיה, he:תבנית:טלפון סלולרי, he:תבנית:כוכב, he:תבנית:מנוע רקטי, he:תבנית:תחנת חלל, he:תבנית:יסוד כימי, he:תבנית:יסוד כימי/גז, he:תבנית:יסוד כימי/נוזל, he:תבנית:אסטרואיד, he:תבנית:גוף פלנטרי
- es:Plantilla:Ficha de obra de arte, es:Plantilla:Ficha de compuesto químico, es:Plantilla:Wikidata Infobox, es:Plantilla:Ficha de arma, es:Plantilla:Ficha de raza, es:Plantilla:Ficha de barco, es:Plantilla:Ficha de teléfono móvil, es:Plantilla:Ficha de personaje, es:Plantilla:Ficha de luchador, es:Plantilla:Ficha de compuesto químico/pruebas2, es:Plantilla:Ficha de misión espacial, es:Plantilla:Ficha de motor de cohete, es:Plantilla:Ficha de vehículo espacial, es:Plantilla:Ficha de astronáutica, es:Plantilla:Ficha de astronáutica/zona de pruebas
- ru:Шаблон:Карточка оружия
- io:Shablono:Elemento
- ro:Format:Infocaseta Jucător de tenis, ro:Format:Infocaseta Model, ro:Format:Infocaseta Stea, ro:Format:Infocaseta Rasă de câini, ro:Format:Infocaseta Planetă, ro:Format:Infocaseta Coroană
- ba:Ҡалып:Wikidata/p2067
- ca:Plantilla:Estrella, ca:Plantilla:Infotaula automòbil, ca:Plantilla:Infotaula d'obra artística, ca:Plantilla:Infotaula de mineral, ca:Plantilla:Infotaula de roca, ca:Plantilla:Infotaula aeronau, ca:Plantilla:Infotaula de telescopi espacial, ca:Plantilla:Infotaula edifici, ca:Plantilla:Infotaula telèfon mòbil, ca:Plantilla:Asteroide, ca:Plantilla:Infotaula arma, ca:Plantilla:Infotaula compost químic, ca:Plantilla:Infotaula càmera, ca:Plantilla:Infotaula d'estel, ca:Plantilla:Infotaula d'objecte astronòmic, ca:Plantilla:Infotaula de Pokémon, ca:Plantilla:Infotaula de fàrmac, ca:Plantilla:Infotaula document, ca:Plantilla:Infotaula eina, ca:Plantilla:Infotaula equipament informàtic, ca:Plantilla:Infotaula personatge, ca:Plantilla:Infotaula tren, ca:Plantilla:Planeta extrasolar, ca:Plantilla:Proteïna, ca:Plantilla:Infotaula vaixell/base, ca:Plantilla:Amadalvarez/traduccions 2, ca:Plantilla:Infotaula de fàrmac/prova, ca:Plantilla:Infotaula isòtop, ca:Plantilla:Infotaula satèl·lit, ca:Plantilla:Infotaula d'asteroide, ca:Plantilla:Infotaula vehicle espacial, ca:Plantilla:Infotaula vehicle espacial/prova, ca:Plantilla:Infotaula vol espacial, ca:Plantilla:Infotaula vol espacial/prova, ca:Plantilla:Infotaula d'ésser viu, ca:Plantilla:Infotaula raça de gos, ca:Plantilla:Infotaula raça de gat, ca:Plantilla:Infotaula fàrmac/prova, ca:Plantilla:Infotaula ésser viu
- cs:Šablona:Infobox - automobil, cs:Šablona:Infobox - dílo, cs:Šablona:Infobox - chemická sloučenina, cs:Šablona:Infobox - cyklista, cs:Šablona:Infobox - kosmické těleso, cs:Šablona:Infobox - lyžař, cs:Šablona:Infobox - léčivá látka, cs:Šablona:Infobox - orientační běžec, cs:Šablona:Infobox - hvězda, cs:Šablona:Infobox - počítač, cs:Šablona:Infobox - lyžař/pískoviště
- hy:Կաղապար:Տեղեկաքարտ Բոդիբիլդեր, hy:Կաղապար:Տեղեկաքարտ Թենիսիստ, hy:Կաղապար:Տեղեկաքարտ Ֆուտբոլիստ, hy:Կաղապար:Տեղեկաքարտ հեծանվորդ, hy:Կաղապար:Տեղեկաքարտ Նյութ, hy:Կաղապար:Տեղեկաքարտ Կոմիքսների կերպար, hy:Կաղապար:Տեղեկաքարտ Մետաղադրամ, hy:Կաղապար:Տեղեկաքարտ Համակարգիչ, hy:Կաղապար:Տեղեկաքարտ Աստղ, hy:Կաղապար:Տեղեկաքարտ Դեղերի խմբեր, hy:Կաղապար:Տեղեկաքարտ Տիեզերական սարքավորում, hy:Կաղապար:Տեղեկաքարտ Մարզիկ, hy:Կաղապար:Խաղային համակարգ
- ru:Шаблон:Велогонщик, ru:Шаблон:Лыжник, ru:Шаблон:Рестлер
- hi:साँचा:ज्ञानसन्दूक व्यक्ति, hi:साँचा:Wikidata Infobox/core
- tg:Шаблон:Телефони ҳамроҳ, tg:Шаблон:Моддаи кимиёӣ
- ru:Шаблон:Вещество
- ja:Template:テニス選手
- myv:ЛопаПарцун:Спортсмен
- el:Πρότυπο:Πληροφορίες προσώπου, el:Πρότυπο:Διαστημική αποστολή, el:Πρότυπο:Διαστημική αποστολή/αμμοδοχείο, el:Πρότυπο:Πληροφορίες αθλητή
- pl:Szablon:Związek chemiczny infobox
- pt:Predefinição:Info/Ciclista, pt:Predefinição:Info/Ciclista/Testes, pt:Predefinição:Info/Telescópio/Testes, pt:Predefinição:Info/Jogador de basquete/Testes, pt:Predefinição:Info/Navio/Testes, pt:Predefinição:Info/Surfista, pt:Predefinição:Info/Surfista/Testes, pt:Predefinição:Info/Telemóvel/Wikidata, pt:Predefinição:Info/esporte/atleta/Testes, pt:Predefinição:Info/Automóvel/Wikidata, pt:Predefinição:Wikidata Infobox/core, pt:Predefinição:Info/Química/Wikidata
- ka:თარგი:ინფოდაფა სუმოისტი, ka:თარგი:Wikidata/p2067
- lmo:Mudel:Sportiv, lmo:Modell:Sportiv
- fa:الگو:Infobox artwork/wikidata
- ru:Шаблон:Баскетболист НБА
- as:সাঁচ:Infobox telescope
- az:Şablon:Futbolçu2, az:Şablon:Gəmi, az:Şablon:Futbolçu, az:Şablon:İdmançı, az:Şablon:Silah, az:Şablon:Ulduz məlumat qutusu, az:Şablon:Avtomobil, az:Şablon:Planet 2, az:Şablon:Planet
- be-x-old:Шаблён:Рэчыва, be-x-old:Шаблён:Тэлескоп, be-x-old:Шаблён:Тэнісіст, be-x-old:Шаблён:Футбаліст, be-x-old:Шаблён:Хакеіст, be-x-old:Шаблён:Мабільны тэлефон, be-x-old:Шаблён:Раварыст, be-x-old:Шаблён:Плянэта, be-x-old:Шаблён:Гандбаліст
- la:Formula:Capsa asteroidis Vicidata, la:Formula:Capsa satellitis Vicidata, la:Formula:Capsa satellitis Vicidatorum, la:Formula:Capsa asteroidis Vicidatorum
- ru:Шаблон:Волейболист, ru:Шаблон:Победительница конкурса красоты
- tt:Калып:Футболчы
- cy:Nodyn:Cyffuriau, cy:Nodyn:Wikidata Infobox
- nn:Mal:Infoboks kjemisk stoff
- b:pl:Szablon:Związek chemiczny infobox
- ta:வார்ப்புரு:Infobox sportsperson/Wikidata, ta:வார்ப்புரு:Wikidata Infobox/core
- ast:Plantía:Ficha d'oxetu celeste, ast:Plantía:Ficha de documentu, ast:Plantía:Persona, ast:Plantía:Raza de perru, ast:Plantía:Ficha de compuestu químicu, ast:Plantía:Taxotabla automática, ast:Plantía:Ficha de raza
- commons:Template:Wikidata Infobox/core
- id:Templat:Wikidata infobox, id:Templat:Infobox spesies, id:Templat:Infobox spesies/bakpasir, id:Templat:Infobox spesies/mirror, id:Templat:Kotak info Wikidata/inti
- mw:Template:Wikidata Infobox/core
- mr:साचा:विकिडाटा माहितीचौकट/core, mr:साचा:विकिडेटा माहितीचौकट/core
- sa:फलकम्:Wikidata Infobox
- ur:سانچہ:خانہ معلومات ویکی ڈیٹا/کور, ur:سانچہ:Wikidata Infobox/core
- ha:Template:Automatic taxobox, ha:Template:Infobox astronomical object, ha:Samfuri:Automatic taxobox, ha:Samfuri:Infobox astronomical object
- q:fr:Modèle:Wikidata Infobox/core
- ru:Шаблон:Элемент периодической системы/Данные
- mt:Mudell:Automatic taxobox
- diq:Şablon:Pokemoni, diq:Şablon:Kayker, diq:Şablon:Infobox elementi
- jv:Cithakan:Infobox spesies, jv:Cithakan:Infobox species
- de:Vorlage:Wikidata Infobox/core
- ru:Шаблон:Звёздное скопление
- gu:ઢાંચો:Wikidata Infobox/core
- q:ru:Шаблон:Элемент периодической системы/Данные
- ban:Mal:Spesiesbox, ban:Mal:Infobox spesies, ban:Mal:Wikidata Infobox/core, ban:Mal:Automatic taxobox, ban:Mal:Infobox spésiés
- gor:Templat:Infobox spesies
- vec:Modèl:Corpo celeste, vec:Modèl:Infobox de Conposto chìmego, vec:Modèl:Infobox de Ojeto astronòmego, vec:Modèl:Infobox de Moneda, vec:Modeło:Infobox de Conposto chìmego, vec:Modeło:Infobox de Moneda, vec:Modeło:Infobox de Ojeto astronòmego, vec:Modeło:Infobox de Automòbiłe, vec:Modeło:Infobox de Voło spasiałe, vec:Modeło:Tassobox
- bjn:Citakan:Infobox spesies, bjn:Citakan:Infobox artwork/wikidata, bjn:Citakan:Infobox spesies/bakpasir
- gd:Teamplaid:Bogsa eachdraidh-bheatha
- kab:Talɣa:Automatic taxobox, kab:Talɣa:Infobox astronomical object
- oc:Modèl:Estela, oc:Modèl:Infobox Raça bovina, oc:Modèl:Infobox Raça canina
- sv:Mall:Wikidata Infobox/core
- s:zh:Template:Wikidata Infobox/core
- ckb:داڕێژە:Wikidata Infobox/core
- sc:Template:Isportivu
- tr:Şablon:Kişi bilgi kutusu, tr:Şablon:Porno yıldızı bilgi kutusu, tr:Şablon:Kişi bilgi kutusu/deneme, tr:Şablon:Sanatçı bilgi kutusu
- ace:Seunaleuëk:Infobox spesies
- incubator:Template:Wp/shi/Automatic taxobox, incubator:Template:Wp/shi/Infobox astronomical object, incubator:Template:Wp/zgh/Automatic taxobox
- inh:Ло:Вещество, inh:Ло:Мура ража чура элемент/Дараш
- ku:Şablon:Wikidata Infobox/core
- mnw:ထာမ်ပလိက်:Wikidata Infobox/core
- nia:Templat:Infobox species, nia:Templat:Infobox spesies
- nl:Sjabloon:Infobox persoon Wikidata, nl:Sjabloon:Infobox sporter
- zh-yue:Template:維基數據行星明細, zh-yue:Template:維基數據君主明細, zh-yue:Template:維基數據足球員明細, zh-yue:Template:維基數據乒乓波運動員明細, zh-yue:Template:維基數據劍擊員明細, zh-yue:Template:維基數據柔道運動員明細, zh-yue:Template:維基數據游水運動員明細, zh-yue:Template:維基數據網球員明細
- shi:Talɣa:Automatic taxobox, shi:Talɣa:Infobox astronomical object
- b:eu:Txantiloi:Taxotaula automatikoa
- d:Template:Wikidata Infobox/core
- dag:Tɛmplet:Taxon
- ru:Шаблон:Биатлонист
- s:ban:Mal:Wikidata Infobox/core
- uz:Andoza:Kimyoviy elementlar oilasi/Ma'lumotlar, uz:Andoza:Kimyoviy jadval unsuri/Ma'lumotlar, uz:Andoza:Kimyoviy jadval unsuri/Maʼlumotlar
- ar:قالب:صندوق معلومات مبنى/نواة, ar:قالب:سط. جد. عملة معدنية
- ga:Teimpléad:WD Bosca Sonraí Ainmhí Bheo, ga:Teimpléad:WD Bosca Sonraí Carr, ga:Teimpléad:WD Bosca Sonraí Carachtar, ga:Teimpléad:WD Bosca Sonraí Taisteal Spáis, ga:Teimpléad:WD Bosca Sonraí Comhdhúil Cheimiceach, ga:Teimpléad:WD Bosca Sonraí Druga, ga:Teimpléad:WD Bosca Sonraí Dúil Cheimiceach, ga:Teimpléad:WD Bosca Sonraí Mianra, ga:Teimpléad:WD Bosca Sonraí Pór Cait, ga:Teimpléad:WD Bosca Sonraí Pór Madra
- lv:Veidne:Wikidata Infobox/core
- ary:موضيل:معلومات جرم سماوي, ary:موضيل:معلومات جرم سماوي عميق, ary:موضيل:معلومات عنصر كيماوي, ary:موضيل:معلومات قمر, ary:موضيل:معلومات كائن, ary:موضيل:معلومات كوكب, ary:موضيل:معلومات كوكب خارجي, ary:موضيل:معلومات مركب كيماوي, ary:موضيل:معلومات نجم, ary:موضيل:معلومات نيزك, ary:موضيل:معلومات نجمة
- gl:Modelo:Arma
- roa-tara:Template:Sportivo
- min:Templat:Infobox spesies
- ce:Кеп:ХӀума, ce:Кеп:Мобилан гӀирс
- tum:Template:Infobox artwork/wikidata
- voy:shn:ထႅမ်းပလဵတ်ႉ:Wikidata Infobox
- s:hi:साँचा:Wikidata Infobox/core
- be-tarask:Шаблён:Гандбаліст, be-tarask:Шаблён:Мабільны тэлефон, be-tarask:Шаблён:Плянэта, be-tarask:Шаблён:Раварыст, be-tarask:Шаблён:Рэчыва, be-tarask:Шаблён:Тэлескоп, be-tarask:Шаблён:Тэнісіст, be-tarask:Шаблён:Футбаліст, be-tarask:Шаблён:Хакеіст, be-tarask:Шаблён:Знакамітая жывёла, be-tarask:Шаблён:Футбаліст2, be-tarask:Шаблён:Каціны завод, be-tarask:Шаблён:Баскетбаліст, be-tarask:Шаблён:Валейбаліст, be-tarask:Шаблён:Спадарожнік
- yue:Template:維基數據乒乓波運動員明細, yue:Template:維基數據劍擊員明細, yue:Template:維基數據君主明細, yue:Template:維基數據柔道運動員明細, yue:Template:維基數據游水運動員明細, yue:Template:維基數據網球員明細, yue:Template:維基數據行星明細, yue:Template:維基數據足球員明細
- gv:Clowan:WD Kishtey Fys Arraghey Spoar
- zgh:ⴰⵍⴱⵓⴹ:Automatic taxobox
- ht:Modèl:Espo, ht:Modèl:Infobox espòtif
- ln:Modèle:Infobox Gymnaste
- kaa:Úlgi:Ximiyalıq keste elementi/Maǵlıwmatlar
- ang:Bysen:Cyþþubox dweoligend
- ps:کينډۍ:Wikidata Infobox/core
Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)
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Unsuitable weight for humanPerson with weight and bigger than 300kg (Help)
Violations query: SELECT DISTINCT ?item WHERE { ?item wdt:P31 wd:Q5; p:P2067/psn:P2067/wikibase:quantityAmount ?amount; p:P2067/psn:P2067/wikibase:quantityUnit wd:Q11570. FILTER( ?amount > 300 ) }
List of this constraint violations: [[Wikidata:Database reports/Complex constraint violations/P2067#Unsuitable weight for human|Database reports/Complex constraint violations/P2067#Unsuitable weight for human]]
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Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)
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Can we use this property to show people's weight? --Stryn (talk) 17:22, 14 September 2015 (UTC)[reply]
- @Stryn: I think it can be used for people. Maybe it would need a point-in-time qualifier for objects that can change their mass. We could also add some aliases like 'weight as an adult'? --Tobias1984 (talk) 09:56, 15 September 2015 (UTC)[reply]
- I have modified the page accordingly. If it's a bad idea just cancel. Thierry Caro (talk) 11:07, 16 September 2015 (UTC)[reply]
- Kind of odd that we use a generic property for a fairly clearly described usecase and make specific mass properties for hot air at take-off. --- Jura 16:08, 27 September 2015 (UTC)[reply]
- People's weight truly has to have a point in time, especially as it predominantly relates to sports' people at the time of their sporting career. Can the constraints be set that where human that it needs a point in time qualifier?
- Added "point in time" for humans. Jeblad (talk) 09:47, 9 May 2019 (UTC)[reply]
FYI, there was a discussion about mass (P2067), WD:BLP and WikiProject Properties/Wikidata properties likely to be challenged on the Project chat. –84.46.52.151 07:12, 20 February 2020 (UTC)[reply]
mass is not weight, weight is a force! mass units are grams, force units are newtons. – The preceding unsigned comment was added by Yossi87 (talk • contribs).
- Scientifically speaking you're absolutely right. However, Wikidata isn't a scientific database, but a database for everyone and in common language mass is often referred to as weight. So that's why weight is mentioned as an alias, so people that don't know the difference can still find this property. Mbch331 (talk) 16:46, 15 March 2016 (UTC)[reply]
- A lot of measured physical properties aren't modelled properly. Some of them are quite hard to model correctly, and some types of models doesn't make much sense to most people. At some point it could be wise to complement or augment the model. Jeblad (talk) 09:44, 9 May 2019 (UTC)[reply]
I've just created megaelectronvolt (Q72081071) which is incredibly useful when discussing masses/energies of baryons. Plenty of data, like that in Review of Particle Physics (Q56810046) is presented in those units. Can we make it an accepted unit? - Sarilho1 (talk) 14:40, 23 October 2019 (UTC)[reply]
- @Sarilho1: see the opposite request: Talk:Q83327. I suppose User:Toni 001 disagrees with you. --Infovarius (talk) 19:35, 10 March 2020 (UTC)[reply]
- I created some mass units like megaelectronvolt per speed of light squared (Q108888206), which will allow proper comparison with other values. There are about 40 values which currently use electronvolt and similar which we can now update. Toni 001 (talk) 07:30, 14 October 2021 (UTC)[reply]
With chemical element (Q11344), it is main practice to note the mass as relative atomic mass (Q41377), symbol Ar. The "relative" part says that its mass is compared to a predefined standard mass (actually that of 1/12 of the carbon-12 atom). So the value is determined as:
- Ar(Element) = mass(Element) / (1/12 * mass(12C)).
This has the consequence that, since the same unit is above and below the /-devider, they are nullified (to be "1") and so the Ar value is dimensionless quantity (Q126818).
This dimensionless unit is used in standard atomic weight (Q28912964) by Commission on Isotopic Abundances and Atomic Weights (Q15647945), (International Union of Pure and Applied Chemistry (Q33438)). Some 80 chemical element (Q11344)s have their mass defined this way.[1] Therefor I propose that the Unit constraint be extended to allow "dimensionless" (=no unit). -DePiep (talk) 20:00, 19 October 2020 (UTC)[reply]
- All units used for a given property should have consistent dimension. If we want to store dimensionless values then we could propose a different property. Toni 001 (talk) 07:49, 10 June 2021 (UTC)[reply]
I have created a thread, Wikidata:Project chat#atomic mess, to discuss the misuse of this property to describe atomic mass as alluded to in the above section, #Relative and so dimensionless, started by User:DePiep. Jc3s5h (talk) 12:13, 9 June 2021 (UTC)[reply]
It seems overly fussy to demand a citation for the mass of an object. Very few people will jump through the hoops to provide one.Vicarage (talk) 22:03, 17 August 2022 (UTC)[reply]
- ↑ CIAAW 2013