Me ne snow fari? za mu gaya

Tambayar da dalilin da ya sa dusar ƙanƙara ne fari, shi ne saba wa kowa da kowa ne tun suna yara. Amma ba dukan yara, da kuma manya suka san daidai amsar, saboda wasu dalilai, da kadan Snowflake ne fari maimakon blue ko kore. Kowa ya san cewa snow - shi ne daskararre ruwa, ko kuma wajen kankara. Amma kamar yadda na kankara ne m, kuma m na watsin da haske ta da shi, me ya sa snowdrifts abin da yake rufe ƙasa, yanzu opaque kuma suna da wani sosai rarrabe launi?

A baya ƙarni, a lokacin da babu irin ci gaban da fasahar don nazarin duk halitta matakai, masana kimiyya suka yi jihãdi da dalilin da ya sa dusar ƙanƙara ne fari. Duk da haka, babu amsa da aka samu. Kawai a lokacin da dukan tsari na halittar snow daga farkon zuwa ƙarshen ya bayyana, a can sun kasance wasu hasashe game da "fari murfin."

Yana duk farawa da cewa a ƙarƙashin rinjayar zafi, hasken rana da ruwa daga koguna, da tabkuna da kuma tekuna ne tuba zuwa cikin tururi da kuma yakan high a cikin yanayi yadudduka inda permafrost Marinjãyi. Tururi a nuna da kaddarorin na ruwa ruwa, saboda manyan korau zafin jiki fara daskare, kuma ya jũya zuwa ga lu'ulu'u na kankara. Wannan shi ne wani Snowflake, wanda zai ƙarshe shirye su fāɗi ƙasa. Domin mafi part, a cikin wadanda wuraren shi ne dumi, icicles fada kamar yadda rigar ruwa, narke ko a cikin iska.

Kamar yadda dusar ƙanƙara da aka kafa, shi ne a yanzu bayyanannu, amma saboda wasu dalilai, idan da dama a kasa, ya ba zato ba tsammani ya zama fari?

The tambaya dacewa, saboda snowflakes da gaskiya ne har yanzu a cikin iska da wannan kwarara Properties na haske ta da shi, da kuma cewa kankara. Amma bai kamata mu manta da abu daya: gefen ruwan tabarau ne located a karkashin m sasanninta cewa da ka refracts hasken rana, da kuma ba su sha shi, da kuma wuce a kan. Kuma a lokacin da snowflakes tara a cikin "snow-fari shãmaki," rana ta haskoki ake refracted da guda Snowflake zuwa wani, to ratsa dukan murfin. Mutane da yawa haskoki aka nuna a cikin idanun mu, wanda shi ne dalilin da ya sa sau da yawa, a lokacin da ka duba a cikin dusar ƙanƙara, dole mu yi squint. The hasken rana ne ma mai haske ga fahimta da ya unprotected idanu.

Amma shi ne ba quite daidai to tambayi tambaya dalilin da ya sa dusar ƙanƙara ne fari, domin shi ne ba ko da yaushe "tsabta". Saboda haka mutane ga shi kawai idan rana ta haskoki fada a kan shi. Alal misali, a faɗuwar rana shi za a iya fentin a pinkish ya dafa, da kuma a cikin hasken da rawaya fitilar iya zama kadan yashi-kala, kazalika a hadari weather shi ne grayish tint.

Don canja launi da snow har yanzu a cikin iska yadudduka, a lokacin da snowflakes suna kawai fara da "fadowa duniya." Alal misali, daban-daban pollens daga itatuwa da furanni, kura daga sandararriyar ƙasar, yakan kuma ya gana da snow specks a airflows. Idan wannan ba shi da lokacin da za a narkar da snow kuma ajiye wani kananan cover, shi ne mamaye zama cikin launi daban-daban na tabarau. A cikin wadannan yanayi, to tambaya me ya sa dusar ƙanƙara ne fari, shi ne bai dace ba.

Duk da haka, snowflakes - ba kawai tashi erratically saukar icicles, wanda for unknown dalilai, yanke shawarar rufe ƙasa "fari shãmaki".

Babban Properties na snow - wannan shi ne kare duniya daga sanyi, ya rufe tare da wani lokacin farin ciki bargo. Haka ne, shi ne dumi da kuma ci gaba da amfanin gona da kuma ƙasa daga daskarewa, shi zai ze paradoxical, amma yana da gaskiya. Yana yana da matalauta thermal watsin, wanda ya yale shi ya hana zafi jefarwa, daga ƙasã, kuma zuwa haifar da "thermal matashi". Ba abin mamaki cewa gina bukkar garin kankara mazauna nisa arewa. Kankara, kamar dusar ƙanƙara, da kiyaye dumi, samar da musamman yanayi na rayuwa.

Ya kamata mu ba rasa wurin da cewa da snowflakes size ya dogara da yanayi a waje. Idan shi ne sanyi isa, da kankara barbashi ne kananan, kusan imperceptible. Kuma idan Rana na haske da kuma iska ne don haka sanyi, girman snowflakes iya zama har zuwa dama santimita. Saboda haka, a shekarar 1944, fadi desyatisantimetrovyh "Nuggets na kankara" a Moscow.