He aha te rauemi i hangaia ai te kākahu huna? He pai ake te huna i te muka matū hangai, ehara i te mea i te mārama e kitea ana anake i te miro taketake. Nā te mea he tae tae kua tāpirihia ki roto i ngā matū motuhake, ka rite te kaha huna o te whakaata infrared ki te tirohanga a tawhio noa, nō reira he pānga huna ārai-infrared o te tirotiro.
Ko ngā kākahu huna he mea hanga ki te kakariki, te kōwhai, te tī, te mangu me ētahi atu tae, he tauira tae tiaki koretake mō ngā kākahu huna. Ko te tikanga o te kākahu huna kia rite te ahua o ngā ngaru mārama whakaata ki ērā e whakaatahia ana e ngā mea e karapoti ana, e kore e taea anake te whakapoauau i te tirohanga a te hoariri, engari ka taea hoki te mahi ki te tirotiro whero-whero, ka uaua ai te hopu i te ūnga e te hoariri mā roto i ngā taputapu kimi hou.
Ko te kākahu huna he momo kākahu whakangungu taketake. Ko te huna he momo tae tiaki hou e titoa ana i te kakariki, te kōwhai, te tī, te mangu me ētahi atu tae he tauira koretake. Ko te kākahu huna e hiahia ana kia rite te ahua o ngā ngaru mārama whakaata ki ērā e whakaatahia ana e ngā mea e karapoti ana, e kore e taea te whakapoauau i te kitenga kanohi tahanga a te hoariri, engari ka taea hoki te mahi ki te kitenga infrared, ka uaua ai te hopu a te hoariri i te ūnga me ngā taputapu kimi hou.
I puta tuatahi mai ngā kākahu huna hei huna i te āhua, ā, i whakamahia tuatahitia e te ope taua a Hitler i te mutunga o te Pakanga Tuarua o te Ao hei "huna toru-tae". Nō muri mai, i whakamahia ētahi whenua, i raro i te kaiārahi o te Hononga o Amerika, ki te "huna whā-tae".
Wā tuku: 8 o Ākuhata 2018