Hoʻolauna pōkole oʻŌmole kiʻi ultraviolet:

ʻO ka phototube Ultraviolet kahi ʻano paipu ʻike ultraviolet me ka hopena photoelectric. Hoʻohana kēia ʻano photocell i ka cathode e hana i ka photoemission, neʻe nā photoelectrons i ka anode ma lalo o ka hana o ke kahua uila, a hana ʻia ka ionization ma muli o ke kuʻi ʻana me nā ʻātoma kinoea i loko o ka paipu i ka wā o ka ionization; loaʻa nā electrons hou a me nā photoelectrons i hana ʻia e ke kaʻina hana ionization e ka anode, ʻoiai loaʻa nā ion maikaʻi e ka cathode ma ke kuhikuhi ʻē aʻe. No laila, ʻoi aku ka nui o ke kahe o ke kiʻi ma ke kaapuni anode ma mua o ka mea i loko o ka vacuum phototube. Hiki i nā photocells Ultraviolet me nā hopena photovoltaic metala a me nā hopena hoʻonui kinoea ke ʻike i ka radiation ultraviolet ma ka laulā o 185-300mm a hana i ka photocurrent.

ʻAʻole ia e ʻike i ka radiation ma waho o kēia ʻāpana spectral, e like me ka lā ʻike ʻia a me nā kumu kukui o loko. No laila, ʻaʻole pono e hoʻohana i ka pale kukui ʻike ʻia e like me nā mea semiconductor ʻē aʻe, no laila ʻoi aku ka maʻalahi o ka hoʻohana ʻana.
Hiki i ka phototube Ultraviolet ke ʻike i ka radiation ultraviolet nāwaliwali. Hiki ke hoʻohana ʻia i loko o ka ʻaila wahie paila, ka nānā ʻana i ke kinoea, ka alarm ahi, ka ʻōnaehana mana no ka nānā ʻana i ka pale uila o ka transformer mālama ʻole ʻia, a pēlā aku.