pudara māriri ā-pō
Ko te puāratau ata torowhā, i mōhiotia hoki hei tae rama, e tohu ana i te whanaketanga matua nui ki te hangarau rama. Kei te āhua hou rawa tēnei matū e mōhiotia ana mō tana pānga pai ki te whai me te pupuri i te kaha o te rama mai i ngā puna rerekē, tae atu ki te rama a-rangi me te rama hangahanga, ka tukuna ai hei rama e kitea ana ana i te pō. Ko te puāratau he kiriwaru strontium aluminate e mahi motuhake ana, e taunahitia ana e ngā paraihe rare earth, e waihangahia ana hei āhua phosphorescent e pai ake ana te mahi i ngā matū tawhito e hāngai ana ki te zinc sulfide. Ina pā te rama, ka tau ngā electron kei roto i te puāratau, ka pupuri i te kaha, ka tukuna kia puta haere te rama e kitea ana ana mō wā roa. Ko te rongoā e mau ana, e hāngai ana ki te taiao tēnei ka tuku rama kua amohia, kāore e hiahiatia he rama hiko, kāore rānei e hiahiatia te tiaki. Ka taea te whakauru i te puāratau ki te maha o ngā whakamātau, mai i ngā tohu haumaru, ngā tohu arataki mō ngā wā mate, ki ngā taonga toi, ki ngā kaupapa toi hoki. Ka taea te roa o tana rama e 12 haora ana, ā, e hāngai ana ki te kaha tuatahi me ngā tikanga taiao. Ka taea te whakarerekē i te rahi o ngā karu puāratau hei tika mō ngā whakamātau motuhake, ko te nuinga o te wā e noho ana i waenganui i te 20 ki te 60 microns, ka whakarite ai i te mahi pai mō ia whakamātau.