He aha ke kīʻaha hau?

He kīʻaha wau, liʻiliʻi koʻu poʻo, wili hāmama ka inu waha wai, momona koʻu kino me nā lole waihoʻoluʻu.Nani au!A ua hanaia ko'u mau lolekila kohu ʻole.

ʻO mākou nā mea e pono ai o ke ola hou, kokoke i kēlā me kēia kanaka.A ʻo mākou ma muli o nā ʻano insulation thermal, ʻoi aku ka makemake o nā kānaka.ʻO ka hoʻolapalapa ʻana i ka wai i loko o ke kīʻaha maʻamau, ma hope o ka manawa mai ka wela a i ka maʻalili, he kānāwai kūlohelohe kēia ʻano hoʻoili wela, akā hiki i ke kīʻaha thermos ke hana i ka wai i loko o ke kīʻaha ma hope o kekahi manawa hiki ke mālama i ka mahana like ke kumu, no laila makemake nui nā kānaka i kēia ʻanokīʻaha thermos.

“kīʻaha māmā", nui ka poʻe e hoʻohana iā mākou e inu wai i kēlā me kēia lā.Akā, ʻike anei ʻoe i ke kumu e maʻalili ʻole ai ka wai wela o ke kīʻaha ma hope o kekahi mau hola?ʻIke ʻoe i ka pili ʻana o kā mākou kumu me ka vacuum?

I ka makahiki 1892, ua hoʻokumu ʻo James Dewar i ka physicist Scottish a me ka chemistkīʻaha māmā.ʻO ka hana holoʻokoʻa o Dewar ma ke aʻo ʻana i nā cryogenics.No ke aʻo ʻana i ka hoʻoheheʻe kinoea, pono ʻo ia i kahi pahu me ka insulation thermal maikaʻi.I kēlā manawa, ʻaʻole maikaʻi ka hopena insulation thermal o ka pahu, a ua maʻalahi ka nalo ʻana o ka wela.No laila, noʻonoʻo ʻo Dewar i kahi moena ʻaʻole hiki ke hoʻololi i ka wela.ʻO kāna ʻuhane o ka ʻimi a me ka hana hou i hoʻokō i kāna mea i hana ai.Ua kapa ʻia ka pahu ʻo “Dewar” a ma hope ua lilo i kakīʻaha māmāhoʻohana mākou i kēia manawa.

Ma ka makahiki 1950, ua hiki i ke kūʻai ʻana o nā kīʻaha hau i ko lākou kiʻekiʻe ma muli o ka makemake o nā kānaka.I loko o kēia manawa, ua lawe ʻia nā kīʻaha ʻūhā i nā pīniki ʻohana, nā huakaʻi kahakai a me nā kahua hoʻomoana.Ma hope mai, ka mea okīʻaha māmāua hoʻomaikaʻi mau ʻia,kila kohu ʻolea ua lilo nā seramika i mea nui o ka pahu o loko a me ka pūpū.Hoʻonui ʻia ka hiki o ka hoʻokaʻawale ʻana i ka ea, kahi e hoʻomaikaʻi ai i ka hopena mālama wela o ke kīʻaha mālama wela wela.