He karāhe tātari whatu ka taea te whakarerekē i te ahunga o te tuku mārama, me te whakarerekē i te horapa o ngā hihi ultraviolet, te mārama e kitea ana, te mārama infrared rānei. Ka taea te whakamahi i te karāhe whatu hei hanga taputapu whatu i roto i te arotahi, te prism, te speculum me ētahi atu. Ko te rerekētanga o te karāhe whatu me ētahi atu karāhe ko tōna wāhanga o tētahi pūnaha whatu e hiahia ana ki te whakaahua whatu. Nō reira, kei roto hoki i te kounga o te karāhe whatu ētahi o ngā tohu tino kaha.
Tuatahi, ko te pūmau whatu motuhake me te ōritetanga o te puranga karāhe kotahi
He paerewa te taupū whakaata o te karāhe whatu momo rerekē mō ngā roangaru mārama rerekē, koinei te pūtake mō ngā kaihanga ki te whakamahere i ngā pūnaha whatu. Nō reira, me noho te pūmau whatu o te karāhe whatu i hangaia e te wheketere ki roto i ēnei awhe hapa e whakaaetia ana, ki te kore ka puta te hua i tua atu i te tumanako o te mahi kounga whakaahua.
Tuarua, ko te whakawhiti
He rite te kanapa o te ahua o te pūnaha whatu ki te mārama o te karāhe. Ka whakaatuhia te karāhe whatu hei tauwehe mimiti mārama, Kλ. Whai muri i te raupapa o ngā porotiti me ngā karāhe arotahi, ka ngaro te kaha o te mārama ki te whakaata atanga o te wāhanga whatu, ko tetahi atu ka mimitihia e te reo (karāhe) tonu. Nō reira, ko te pūnaha whatu kei roto he maha ngā karāhe angiangi, ko te huarahi anake hei whakanui ake i te tere paahi ko te whakaiti i te ngaronga whakaata o waho o te karāhe arotahi, pērā i te whakamahi i te paparanga kiriuhi uruhanga o waho.
Saida GlassHe tekau tau te roa o te wheketere tukatuka karāhe, kua whakatakotoria te rangahau me te whanaketanga, te whakaputa me te hoko i roto i te kotahi, me te aro ki te tono mākete, kia tutuki ai, kia hipa atu rānei i ngā tumanakohanga a te kiritaki.
Wā tuku: Pipiri-05-2020