Pono ke kumu kukui ʻoki kino e hoʻokō i nā kūlana ma lalo nei:

1. Hōʻike kala maikaʻi
2. ʻĀlohilohi loa
3. me ka haʻahaʻa loa o ka radiation infrared

ʻOi aku ka maikaʻi o kēia huahana ma nā mea a pau i luna. No laila, ʻo ia ke koho mua a ke kauka lapaʻau no nā makahiki he nui.