Glout breneenagh conastagh

Ta glout breneenagh conastagh (cowrey: A; girrit keayrtyn myr RAM ny r.a.m. voish "Relative Atomic Mass" y Vaarle), ta enmyssit chammah lesh y cho-cheayllagh ass cliaghtey trimmid breneenagh, çheet er mooad fishigagh ta meenit myr corrillagh glout meanagh ny breneenyn ayns bunstoo ayns sampleyr er lheh rish sheerid y ghlout breneenagh. Ta sheerid y ghlout breneenagh (cowrey: m) meenit er  jeh glout breneen charboan-12. Er-yn-oyr dy vel y daa vooad nyn ghloutyn, ta'n leagh troaragh gyn towshan. Ta ny meenaghyn shen tannaghtyn breeoil feeu lurg aa-veenaghey bun-unnidyn SI ayns 2019.

Son sampleyr singyl er lheh, ta glout breneenagh conastagh bunstoo enmyssit çheet er mean earrooaghtagh meihit gloutyn ny breneenyn singyl (goaill stiagh dagh eesotoyp) ta ry-gheddyn 'sy tampleyr. Foddee yn mooad shen anchasley eddyr sampleyryn er-yn-oyr dy vel eh jantagh dy ren bun y tampleyr (as, myr shen, e hennaghys goul-rooragh ny shennaghys skeayllee) gientyn cochianglaghyn jeh palçhyssyn eesotoypagh ayns corrillee eigsoylagh caghlaaee. Myr sampleyr, kyndagh rish mestey anchasley jeh eesotoypyn shickyr y carboan-12 as y charboan-13, veagh glout breneenagh conastagh jeh'n charboan bunstooagh voish y veetane volcaanagh anchasley rish sampleyr v'er çhaglym voish lossreeyn ny beiyn.

She cur ayns ymmyd leaghyn ny gloutyn breneenagh conastagh voish sampleyryn eigsoylagh y mooad er lheh as ny s'cadjiney ta enmyssit trimmid breneenagh stundayrtit (A). Keayrtyn, t'eh soilshit myr y reayn jerkit jeh leaghyn y ghlout breneenagh conastagh ayns bunstoo enmyssit voish dagh bun dowanagh, as ny bunyn eigsoylagh shen goit voish y Chruinney.Definition of element sample Ta "trimmid breneenagh" ymmydit dy mennick myr co-cheayllagh da trimmid breneenagh stundayrtit, ga nagh vel eh kiart eh shen y ymmyd er-yn-oyr nagh vel trimmidyn breneenagh stundayrdit goit ass un hampleyr). Ansherbee, ta'n trimmid breneenagh stundayrtit ny leagh smoo soilshit magh jeh'n ghlout breneenagh conastagh.

Chammah's shen, ta ymmyd y çhiarrym "trimmid breneenagh" (da bunstoo erbee) er ny gheddyn arganyssyn mooarey  voish ny 1960yn, kyndagh rish yn anchaslys çhaghnoil eddyr trimmid as glout 'syn ishig. Er y laue elley, ta'n IUPAC cur kied da ymmyd yn daa hiarrym. Ta'n çhiarrym "glout breneenagh conastagh" goll stiagh ayns ynnyd "trimmid breneenagh myr y reih çhiarrym, agh ta "trimmid breneenagh stundayrtit" (shassoo noi'n çhiarrym ny s'kirtey "glout breneenagh stundayrtit") foast ymmydit.

Imraaghyn

Kianglaghyn magh
IUPAC Commission on Isotopic Abundances and Atomic Weights 
Standard Atomic Weights 

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