《Kula da daidaitaccen makamashi 维持能量的平衡》

                                            Language:Africa Hausa 非洲豪萨语

【Kula da daidaitaccen makamashi - Labarin Rayuwa a Duniya 维持能量的平衡下编-地球生命编】

Hasken farko na wayewar rayuwa. Kamar yadda mawaki T.S. Eliot ya rubuta: "Abin da muke kira farko shine sau da yawa ƙarshe, kuma yin ƙarshe shine yin farko."

     Duniya a farkonta ta sami kyauta daga sararin samaniya: ruwa (H₂O). Tsarin ruwa shine bayyanar daidaituwar makamashi kai tsaye. Karyewa da sake haɗuwa da haɗin gwiwar hydrogen yana adanawa da sakin zafi. Lokacin da ruwa mai ruwa ya yi sanyi zuwa 0°C, yana sakin latent heat, yana samar da tsarin kristal na kankara. Dangane da canjin makamashi mai zafi: kankara (m) yana sha zafi don shawo kan ƙuntatawa na haɗin gwiwar hydrogen ya zama ruwa mai ruwa. Ruwa mai ruwa a 100°C yana sha 2258 kJ/kg (540 cal/g) na latent heat ya zama tururi, kuma tururin ruwa yana ɗaukar wannan makamashi zuwa sararin samaniya. Canje-canje uku na yanayin ruwa suna kiyaye tsayayyen tsari daidai gwargwado bisa ga canjin makamashi. Lokacin da tururin ruwa ya yi sanyi ya kuma tashe, yana sakin daidai adadin zafi, yana haifar da convection da hazo. Canjin kankara kai tsaye zuwa tururin ruwa yana buƙatar sha 680 cal/g na makamashi, wanda aka fi gani a yankunan daskararrun ƙasa ko saman dusar ƙanƙara na polar. Lokacin da tururin ruwa ya daskare kai tsaye zuwa kristal kankara (kamar samuwar sanyi), yana sakin zafi. A cikin kankara, ƙwayoyin ruwa suna samar da tsari mai tsari ta hanyar haɗin gwiwar hydrogen, suna adana makamashi mai yuwuwa. Lokacin narkewa, dole ne a karya haɗin gwiwar hydrogen, a saki makamashi mai yuwuwa kuma a canza shi zuwa makamashi mai zafi. A cikin tururin ruwa, ƙarfin tsakanin ƙwayoyin cuta yana da rauni, kuma makamashi mai yuwuwa yana adana a cikin makamashin motsi na ƙwayoyin cuta. Tururin ruwa yana aiki azaman "mai ɗaukar makamashi", yana ɗaukar makamashin rana da tekuna suka sha zuwa ƙasa a matsayin latent heat. Kusan kashi 30% na makamashin hasken rana na duniya ana sake rarraba shi kowace shekara ta hanyar zagayowar ruwa. Daidaiton makamashi na tsarin ruwa shine sakamakon haɗin gwiwar latent heat na canjin yanayi, musayar zafi mai ma'ana, da adana makamashi.

     Daidai halayen tsarin ruwa, tare da yanayin zafi da ya dace na duniya da samuwar yanayinta, sun samar da tushe ga farkon rayuwa daga baya a duniya. Kasancewar ruwa mai ruwa, da tururin ruwa a matsayin "mai ɗaukar makamashi" sun ba da ƙarfi ga ci gaban wayewa. Bayan da ɗan adam ya fito, "yana shiga cikin dare da iska, yana jika komai cikin nutsuwa", ɗan adam ya koyi amfani da makamashin zagayowar ruwa. Makamashin ruwa da ma mafi kyawun tashoshin makamashin nukiliya na yanzu duk ana tafiyar da su ne da wannan tushen ƙarfi. Kamar yadda Lao Tzu ya ce: "Mafi girman alheri yana kama da ruwa. Ruwa yana amfanar komai ba tare da yin gwagwarmaya ba." Daidaiton tsarin ruwa nasara ce ga dokokin kimiyyar lissafi, kuma kyauta ce ta hikimar yanayi. Ruwa shine "jinin shuɗi" da sararin samaniya ta bai wa duniya. Canje-canjen yanayi uku suna saƙa gidan yanar gizo na makamashi, suna haifar da rayuwa, suna ciyar da wayewa. Daga zurfin zafin teku...

[Jadawalin] [Rahoton] [Gabatarwa] [Kalmar Farko] [Sashen Sararin Samaniya] [Farko][Baya][Gaba][Ƙarshe] [23]
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