Fir Chlis: Solais lasrach san adhar a nochdas san dorchadas san àird-a-tuath
ʼS e iongantas nàdarra a thʼ anns na Fir Chlis - solais a chithear uaireannan san adhar air oidhche dhorcha sna sgìrean fada mu thuath no fada mu dheas air an Talamh.
ʼS ann aig domhan-leud nas àirde na 65° as tric a chithear na Fir Chlis. Ach ann an Albainn chithear uaireannan iad anns na sgìrean as fhaide tuath, agus caran tric ann an Arcaibh is Sealtainn. Chan urrainn fàisneachd a dhèanamh air taisbeanaidhean na Fir Chlis, ach tha iad a' nochdadh ann an cuairtean, tric a’ ruighinn bàrr a h-uile 11 bliadhna no mar sin.
ʼS e a tha gan adhbhrachadh, moileciuilean gasa (ogsaidean is naitridean) fo spionnadh mhìrean dealain sgaoilte ann am fànais le na brùchdaidhean lùtha bhon ghrèin a tha aʼ tachairt bho àm gu àm.
B' e Anders Jonas Ångström a' chiad duine a rannsaich speactram nam Fear Chlis agus dhearbhaich e gum b' ann diofraichte a bha e agus speactram na grèine.
Ceanglaichean a-mach
- Na Fir Chlis - duilleag Ghàidhlig le Steve Carter
- BBC: Naidheachdan: 2015-03-18: Na Fir Chlis
- AuroraWatch UK
- SpaceWeather.com
Iomraidhean
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