{"id":55195,"date":"2020-01-15T00:00:00","date_gmt":"2020-01-14T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/velikaya-teoriya-snezhinok"},"modified":"2020-02-18T14:03:17","modified_gmt":"2020-02-18T11:03:17","slug":"velikaya-teoriya-snezhinok","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/news\/velikaya-teoriya-snezhinok","title":{"rendered":"Teoria e madhe e flakes","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\"Teoria
\nKa sojllat\u00eb q\u00eb k\u00ebt\u00eb dim\u00ebr n\u00eb pjes\u00ebn qendrore t\u00eb Rusis\u00eb ka pak bor\u00eb. Diku ka r\u00ebn\u00eb, sigurisht, por n\u00eb muajin janar pritej nj\u00eb koh\u00eb m\u00eb e ftoht\u00eb dhe me m\u00eb shum\u00eb bor\u00eb. Gri t\u00eb m\u00ebrzitshme dhe lluc\u00eb e pak\u00ebndshme pengojn\u00eb ndjesin\u00eb e g\u00ebzimit nga arg\u00ebtimet dim\u00ebrore. Prandaj, Cloud4Y sugjeron q\u00eb ta shtojm\u00eb pak bor\u00eb n\u00eb jet\u00ebn ton\u00eb duke folur p\u00ebr\u2026 bor\u00eb.<\/i><\/a><\/noindex><\/p>\n

Mendohet se bor\u00ebkujqet jan\u00eb vet\u00ebm dy lloje. Dhe nj\u00ebri nga shkenc\u00ebtar\u00ebt, i cili ndonj\u00ebher\u00eb quhet \u2018ati\u2019 i fizik\u00ebs s\u00eb bor\u00ebkuqeve, ka propozuar nj\u00eb teorin\u00eb e re q\u00eb shpjegon arsyen e k\u00ebsaj. Kenneth Libbrecht<\/a><\/noindex> \u00ebsht\u00eb nj\u00eb njeri i mrekulluesh\u00ebm, i cili \u00ebsht\u00eb i gatsh\u00ebm t\u00eb largohet nga Kaliforni e ngroht\u00eb, p\u00ebr t\u00eb arritur n\u00eb Fairbanks (Alaska) n\u00eb mes t\u00eb dimrit, t\u00eb vesh\u00eb nj\u00eb xhaket\u00eb t\u00eb ngroht\u00eb dhe t\u00eb ulet n\u00eb nj\u00eb fush\u00eb t\u00eb ngrir\u00eb me nj\u00eb kamer\u00eb dhe nj\u00eb cop\u00eb polistireni n\u00eb duar.<\/p>\n

Pse? Ai k\u00ebrkon bor\u00ebkuqe m\u00eb t\u00eb ndritshme, m\u00eb t\u00eb strukturuara, m\u00eb t\u00eb bukura q\u00eb natyra mund t\u00eb krijoj\u00eb. Sipas tij, mostrat m\u00eb interesante kan\u00eb tendenc\u00eb t\u00eb formohen n\u00eb vendet m\u00eb t\u00eb ftohta \u2014 Fairbanks dhe n\u00eb pjes\u00ebn e mbuluar me bor\u00eb t\u00eb New Yorkut verior. Bor\u00eb m\u00eb e mir\u00eb q\u00eb Kenneth ka par\u00eb ndonj\u00ebher\u00eb ka r\u00ebn\u00eb n\u00eb Cochrane, nj\u00eb vend n\u00eb verilindje t\u00eb Ontarios, ku nj\u00eb er\u00eb e dob\u00ebt rrotullonte bor\u00ebkuqet q\u00eb binin nga qielli.<\/p>\n

I magjepsur nga elementi, Libbrecht me pasion studion pllakat e tij t\u00eb polistirenit si nj\u00eb arkeolog. N\u00ebse ka di\u00e7ka interesante, shikimi i tij do t\u00eb p\u00ebrqendrohet atje. N\u00ebse jo, bora largohet nga pllaka dhe gjith\u00e7ka fillon nga e para. Dhe kjo vazhdon p\u00ebr or\u00eb t\u00eb t\u00ebra.<\/p>\n

Libbrecht \u00ebsht\u00eb fizik. N\u00eb nj\u00eb rast t\u00eb \u00e7uditsh\u00ebm, laboratori i tij n\u00eb Institutin Teknologjik t\u00eb Kalifornis\u00eb studion struktur\u00ebn e brendshme t\u00eb Diellit dhe madje ka zhvilluar pajisje moderne p\u00ebr t\u00eb zbuluar val\u00ebt gravitacionale. Por, p\u00ebr 20 vitet e fundit, pasioni i v\u00ebrtet\u00eb i Libbrecht \u00ebsht\u00eb bor\u00eb \u2014 jo vet\u00ebm pamja e saj, por edhe ajo q\u00eb e b\u00ebn t\u00eb duket k\u00ebshtu. \"Pyetja se cil\u00ebt objekte bien nga qielli, si ndodh kjo dhe pse duken k\u00ebshtu, m\u00eb shqet\u00ebson gjithmon\u00eb\", pranon Kenneth.<\/p>\n

\"Teoria
\n
\nP\u00ebr nj\u00eb koh\u00eb t\u00eb gjat\u00eb, fizikant\u00ebt mjaftoheshin me njohjen e dy llojeve dominuese t\u00eb kristaleve t\u00eb bor\u00ebs mes shum\u00eb mikro-kristaleve t\u00eb bor\u00ebs. Nj\u00ebra \u00ebsht\u00eb nj\u00eb yll i shesht\u00eb me gjasht\u00eb ose dymb\u00ebdhjet\u00eb rreze, secila e zbukuruar me motive t\u00eb mahnitshme. Tjetra \u00ebsht\u00eb nj\u00eb lloj kolone miniaturale, ndonj\u00ebher\u00eb e ngjeshur nd\u00ebrmjet \u2018kapak\u00ebve\u2019 t\u00eb shesht\u00eb, ndonj\u00ebher\u00eb duket si nj\u00eb bulon i zakonsh\u00ebm. K\u00ebto forma mund t\u00eb shihen n\u00ebn temperatura dhe lag\u00ebshti t\u00eb ndryshme, por arsyeja p\u00ebr formimin e nj\u00eb forme ose tjet\u00ebr ka qen\u00eb nj\u00eb mister. Vitet e v\u00ebzhgimeve t\u00eb Libbrecht ndihmuan n\u00eb t\u00eb kuptuarit m\u00eb t\u00eb mir\u00eb t\u00eb procesit t\u00eb kristalizimit t\u00eb bor\u00ebkuqeve.<\/p>\n

P\u00ebrvojat e Libbrecht n\u00eb k\u00ebt\u00eb fush\u00eb ndihmuan n\u00eb krijimin e nj\u00eb modeli t\u00eb ri q\u00eb shpjegon pse bor\u00ebkuqet dhe kristalet e tjera t\u00eb bor\u00ebs formojn\u00eb at\u00eb q\u00eb ne jemi m\u00ebsuar t\u00eb shohim. Sipas teoris\u00eb s\u00eb tij, publikuar <\/a><\/noindex>n\u00eb internet n\u00eb tetor 2019, p\u00ebrshkruan l\u00ebvizjen e molekulave t\u00eb ujit pran\u00eb pik\u00ebs s\u00eb ngrirjes (kristalizimit) dhe se si l\u00ebvizjet specifike t\u00eb k\u00ebtyre molekulave mund t\u00eb krijojn\u00eb nj\u00eb grup kristalesh q\u00eb formohen n\u00eb kushte t\u00eb ndryshme. N\u00eb monografin\u00eb e tij 540 faqe <\/a><\/noindex>Libbrecht p\u00ebrshkruan t\u00eb gjitha njohurit\u00eb p\u00ebr kristalet e bor\u00ebs.<\/p>\n

Yjet me gjasht\u00eb pika<\/h2>\n

\nSikur t\u00eb dini, nuk \u00ebsht\u00eb e mundur t\u00eb shihni dy bor\u00ebkuqe t\u00eb nj\u00ebjta (p\u00ebrve\u00e7 n\u00eb faz\u00ebn e krijimit). Ky fakt \u00ebsht\u00eb i lidhur me m\u00ebnyr\u00ebn se si kristalet formohen n\u00eb qiell. Bora \u00ebsht\u00eb nj\u00eb grumbullim i kristaleve t\u00eb akullit q\u00eb formohen n\u00eb atmosfer\u00eb dhe ruajn\u00eb form\u00ebn e tyre kur bien t\u00eb gjith\u00eb s\u00eb bashku n\u00eb Tok\u00eb. Ato formohen kur atmosfera \u00ebsht\u00eb mjaft e ftoht\u00eb p\u00ebr t\u00eb mos lejuar bashkimin ose shkrihjen dhe ndryshimin n\u00eb bor\u00eb t\u00eb lag\u00ebsht ose shi.<\/p>\n

Nd\u00ebrsa n\u00eb nj\u00eb re mund t\u00eb regjistrohen shum\u00eb temperatura dhe nivele lag\u00ebshtie, p\u00ebr nj\u00eb bor\u00ebkuqe k\u00ebto variabla do t\u00eb jen\u00eb konstante. Ky \u00ebsht\u00eb shkaku pse bor\u00ebkuqja shpesh rritet simetrikisht. Nga ana tjet\u00ebr, \u00e7do bor\u00ebkuqe ndikohet nga ere, drita e diellit dhe faktor\u00eb t\u00eb tjer\u00eb. N\u00eb thelb, \u00e7do kristal i n\u00ebnshtrohet kaosit t\u00eb re dhe p\u00ebr k\u00ebt\u00eb arsye merr forma t\u00eb ndryshme.<\/p>\n

Sipas studimit t\u00eb Libbrecht, reflektimet m\u00eb t\u00eb hershme mbi k\u00ebto forma delikate jan\u00eb regjistruar n\u00eb vitin 135 para Krishtit n\u00eb Kin\u00eb. \"Lul\u00ebzimi i bim\u00ebve dhe pem\u00ebve zakonisht ka pes\u00eb pika, por lule e bor\u00ebs ka gjithmon\u00eb gjasht\u00eb pika\", shkruante shkenc\u00ebtari Han Yin. Dhe shkenc\u00ebtari i par\u00eb q\u00eb p\u00ebrpiqej t\u00eb kuptonte pse ndodhte k\u00ebshtu, ndoshta ishte Johannes Kepler, nj\u00eb shkenc\u00ebtar dhe erudit gjerman.<\/p>\n

N\u00eb vitin 1611, Kepler i dhuroi nj\u00eb dhurat\u00eb t\u00eb Vitit t\u00eb Ri mb\u00ebshtet\u00ebsit t\u00eb tij, perandorit t\u00eb Perandoris\u00eb s\u00eb Shenjt\u00eb Romake Rudolf II: nj\u00eb traktat t\u00eb vog\u00ebl traktat <\/a><\/noindex>me titullin \u00abP\u00ebr snjezar\u00ebt me gjasht\u00eb k\u00ebnd\u00eb\u00bb. <\/p>\n

\u00abUn\u00eb po kaloj nj\u00eb ur\u00eb, i munduar nga turpi \u2013 t\u00eb lash pa dhurat\u00ebn e Vitit t\u00eb Ri! Dhe k\u00ebtu m'u paraqit rast i p\u00ebrshtatsh\u00ebm! Avujt e ujit, duke u shnd\u00ebrruar nga ftoht\u00ebsia n\u00eb bor\u00eb, bien si snjeza mbi rrobat e mia, t\u00eb gjitha, nj\u00eb nga nj\u00eb, me gjasht\u00eb k\u00ebnd\u00eb, me rreze t\u00eb buta. Pasha Herakliun, ky \u00ebsht\u00eb nj\u00eb send, q\u00eb \u00ebsht\u00eb m\u00eb i vog\u00ebl se \u00e7do pik\u00eb, ka form\u00eb, mund t\u00eb sh\u00ebrbej\u00eb si dhurat\u00eb e pritur p\u00ebr adhuruesin e Asgj\u00ebs\u00eb dhe \u00ebsht\u00eb i denj\u00eb p\u00ebr matematikun q\u00eb zot\u00ebron Asgj\u00eb dhe merr Asgj\u00eb, pasi bie nga qielli dhe mban brenda nj\u00eb t\u00eb ngjashme me yllin me gjasht\u00eb k\u00ebnd\u00eb!\u00bb.<\/p><\/blockquote>\n

\u00abDuhet t\u00eb ket\u00eb nj\u00eb shkak, p\u00ebrse bora ka form\u00eb si nj\u00eb yll me gjasht\u00eb k\u00ebnd\u00eb. Ky nuk mund t\u00eb jet\u00eb nj\u00eb rast\u00ebsi\u00bb, ishte i bindur Johannes Kepler. Ndoshta i erdh\u00ebn n\u00eb mendje let\u00ebr q\u00eb i d\u00ebrgoi bashk\u00ebkoh\u00ebsi i tij Thomas Harriot, nj\u00eb shkenc\u00ebtar dhe astronom anglez, i cili gjithashtu kishte punuar si ndihm\u00ebs p\u00ebr eksploruesin Sir Walter Raleigh. Rreth vitit 1584, Harriot k\u00ebrkoi m\u00ebnyr\u00ebn m\u00eb efikase p\u00ebr t\u00eb rregulluar topat e artileris\u00eb n\u00eb dek\u00ebn e anijes s\u00eb Raleigh. Harriot zbuloi se modelet heksagonale duken si m\u00ebnyra m\u00eb e mir\u00eb p\u00ebr t\u00eb shp\u00ebrndar\u00eb sferat, dhe ai diskutoi k\u00ebt\u00eb \u00e7\u00ebshtje n\u00eb korespondenc\u00ebn me Keplerin. Kepleri pyeste veten n\u00ebse ndodhte di\u00e7ka e ngjashme n\u00eb snjeza dhe p\u00ebr \u00e7far\u00eb elementi ato gjasht\u00eb rrezet lindnin dhe mbaheshin. <\/p>\n

Formacionet e snjezave<\/b>\"Teoria
\n
\n\"Teoria
\n
\n\"Teoria
\n
\nMund t\u00eb thuhet se kjo ishte kuptimi fillestar i parimeve t\u00eb fizik\u00ebs atomike, p\u00ebr t\u00eb cilat do t\u00eb flitej vet\u00ebm pas 300 vjet\u00ebsh. N\u00eb t\u00eb v\u00ebrtet\u00eb, molekulat e ujit me dy atome hidrogjeni dhe nj\u00eb oksigjeni kan\u00eb tendenc\u00ebn t\u00eb bashkohen s\u00eb bashku, duke formuar grupe heksagonale. Kepleri dhe bashk\u00ebkoh\u00ebsit e tij nuk e dinin madje se sa e r\u00ebnd\u00ebsishme ishte kjo.<\/p>\n

Si\u00e7 thon\u00eb fizikant\u00ebt, fal\u00eb lidhjeve hidrogjenike dhe interaksioneve nd\u00ebrmjet molekulave ne mund t\u00eb v\u00ebzhgojm\u00eb struktur\u00ebn kristalore t\u00eb hapur. P\u00ebrve\u00e7 aft\u00ebsis\u00eb p\u00ebr t\u00eb rritur snjezat, struktura heksagonale e b\u00ebn akullin m\u00eb pak t\u00eb dendur n\u00eb krahasim me ujin, gj\u00eb q\u00eb ka nj\u00eb ndikim t\u00eb madh n\u00eb gjeokimik\u00eb, gjeofizik\u00eb dhe klim\u00eb. Me fjal\u00eb t\u00eb tjera, n\u00ebse akulli nuk do t\u00eb fluturoj\u00eb, jeta n\u00eb Tok\u00eb do t\u00eb ishte e pamundur.<\/p>\n

Por pas traktatit t\u00eb Keplerit, v\u00ebzhgimi i snjezave ishte m\u00eb shum\u00eb nj\u00eb hobin se nj\u00eb shkenc\u00eb serioze. N\u00eb vitet 1880, nj\u00eb fotograf amerikan me emrin Wilson Bentley, q\u00eb jetonte n\u00eb nj\u00eb qytet t\u00eb vog\u00ebl t\u00eb ftoht\u00eb dhe gjithmon\u00eb t\u00eb mbuluar nga bora n\u00eb Jericho (Vermont, SHBA), filloi t\u00eb b\u00ebnte fotografi t\u00eb snjezave me ndihm\u00ebn e pllakave fotografike. Ai arriti t\u00eb krijonte m\u00eb shum\u00eb se 5000 fotografi, para se t\u00eb vdiste nga pneumonin\u00eb.<\/p>\n

\"Teoria
\n
\nM\u00eb von\u00eb, n\u00eb vitet 1930, studiuesi japonez Ukichiro Nakaya filloi nj\u00eb studim sistematik t\u00eb llojeve t\u00eb ndryshme t\u00eb kristaleve t\u00eb bor\u00ebs. N\u00eb mes t\u00eb shekullit, Nakaya rriti snjeza n\u00eb nj\u00eb laborator, duke p\u00ebrdorur fije t\u00eb ve\u00e7anta t\u00eb dhelpr\u00ebs t\u00eb vendosura n\u00eb nj\u00eb dhom\u00eb t\u00eb ftoht\u00eb. Ai eksperimentonte me cil\u00ebsit\u00eb e lag\u00ebshtis\u00eb dhe temperatur\u00ebs, duke rritur tipet themelore t\u00eb kristaleve dhe mbledhur katalogun e tij origjinal t\u00eb formave t\u00eb mundshme. Nakaya zbuloi se snjezat-yje tendencojn\u00eb t\u00eb formohen n\u00eb -2 \u00b0C dhe n\u00eb -15 \u00b0C. Kolonat formohen n\u00eb -5 \u00b0C dhe p\u00ebraf\u00ebrsisht n\u00eb -30 \u00b0C. <\/p>\n

\u00cbsht\u00eb e r\u00ebnd\u00ebsishme t\u00eb theksohet se n\u00eb temperatura rreth -2 \u00b0C shfaqen forma t\u00eb holla t\u00eb snjezave, n\u00eb -5 \u00b0C ato krijojn\u00eb kolona t\u00eb holla dhe shenja, kur temperatura shkon deri n\u00eb -15 \u00b0C, ato b\u00ebhen v\u00ebrtet\u00eb pllaka t\u00eb holla, nd\u00ebrsa n\u00eb temperatura n\u00ebn -30 \u00b0C kthehen n\u00eb kolona m\u00eb t\u00eb trasha.<\/p>\n

\"Teoria
\n
\nN\u00eb kushte t\u00eb lag\u00ebshtis\u00eb t\u00eb ul\u00ebt, snjezat-yje formojn\u00eb disa deg\u00eb dhe duken si pllakat heksagonale, por n\u00eb lag\u00ebshti m\u00eb t\u00eb lart\u00eb b\u00ebhen m\u00eb t\u00eb komplikuara, me an\u00eb merak.<\/p>\n

Sipas Libbrecht, arsyet e shfaqjes s\u00eb formave t\u00eb ndryshme t\u00eb snjezave jan\u00eb b\u00ebr\u00eb m\u00eb t\u00eb kuptueshme pik\u00ebrisht p\u00ebrmes pun\u00ebs s\u00eb Nakaya. U zbulua se kristalet e bor\u00ebs shnd\u00ebrrohen n\u00eb yje dhe pllaka t\u00eb sheshta (e jo struktura tridimensionale), kur skajet rriten shpejt jasht\u00eb, nd\u00ebrsa faqet rriten ngadal\u00eb lart. Kolonat e holla rriten ndryshe, me faqe q\u00eb rriten shpejt dhe skaje q\u00eb rriten m\u00eb ngadal\u00eb.<\/p>\n

N\u00eb t\u00eb nj\u00ebjt\u00ebn koh\u00eb, proceset kryesore q\u00eb ndikojn\u00eb n\u00ebse nj\u00eb snjez b\u00ebhet yll apo kolon\u00eb mbesin t\u00eb paqarta. Ndoshta sekreti q\u00ebndronte n\u00eb kushtet e temperatur\u00ebs. Dhe Libbrecht p\u00ebrpiqej t\u00eb gjente nj\u00eb p\u00ebrgjigje p\u00ebr k\u00ebt\u00eb pyetje.<\/p>\n

Receta e snjez\u00ebs<\/h2>\n

\nS\u00eb bashku me ekipin e tij t\u00eb vog\u00ebl t\u00eb studiuesve, Libbrecht po p\u00ebrpiqej t\u00eb shpikte nj\u00eb recet\u00eb p\u00ebr snjez\u00ebn. Pra, nj\u00eb grup ekuacionesh dhe parametrash, t\u00eb cilat mund t\u00eb ngarkohen n\u00eb kompjuter dhe t\u00eb merrnin nga AI nj\u00eb larmi t\u00eb mrekullueshme snjezash.<\/p>\n

K\u00ebrkimet e tij Kenneth Libbrecht i filloi nj\u00ebzet vjet m\u00eb par\u00eb, kur m\u00ebsoi p\u00ebr nj\u00eb form\u00eb ekzotike t\u00eb d\u00ebbor\u00ebs, t\u00eb quajtur kolona e mbyllur. Ajo ngjan si rrotull p\u00ebr fije ose si dy rrota dhe nj\u00eb bosht. I lindur n\u00eb veriun e vendit, ai ishte i shokuar nga fakti se nuk e kishte par\u00eb kurr\u00eb nj\u00eb d\u00ebbor\u00eb t\u00eb till\u00eb.<\/p>\n

I mahnitur nga format e pafundme t\u00eb kristaleve t\u00eb d\u00ebbor\u00ebs, ai filloi studimin<\/a><\/noindex> e natyr\u00ebs s\u00eb tyre, duke krijuar nj\u00eb laborator p\u00ebr rritjen e d\u00ebbor\u00ebs. Rezultatet e v\u00ebzhgimeve nd\u00ebr vite ndihmuan n\u00eb krijimin e nj\u00eb modeli, q\u00eb autori vet\u00eb e konsideron revolucionar. Ai propozoi iden\u00eb e difuzionit molekular n\u00eb baz\u00eb t\u00eb energjis\u00eb sip\u00ebrfaq\u00ebsore. Kjo ide p\u00ebrshkruan se si rritja e kristalit t\u00eb d\u00ebbor\u00ebs varet nga kushtet fillestare dhe nga sjellja e molekulave q\u00eb e formojn\u00eb at\u00eb.<\/p>\n

\"Teoria
\n
\nImagjinoni se molekulat e ujit jan\u00eb pozicionuar lirsh\u00ebm, nd\u00ebrsa avujt e ujit fillojn\u00eb t\u00eb ngrijn\u00eb. N\u00ebse do t\u00eb ishte e mundur t\u00eb ishim brenda nj\u00eb observatori t\u00eb vog\u00ebl dhe t\u00eb shikonim k\u00ebt\u00eb proces, do t\u00eb mund t\u00eb shihnim se si molekulat e ujit t\u00eb ngrir\u00eb fillojn\u00eb t\u00eb formojn\u00eb nj\u00eb rrjet\u00eb t\u00eb fort\u00eb, ku secili atom oksigjeni rrethuar nga kat\u00ebr atome hidrogjeni. K\u00ebto kristale rriten duke p\u00ebrfshir\u00eb molekulat e ujit nga ajri p\u00ebrreth n\u00eb struktur\u00ebn e tyre. Ato mund t\u00eb rriten n\u00eb dy drejtime kryesore: lart ose jasht\u00eb.<\/p>\n

Nj\u00eb kristal i holl\u00eb dhe i shesht\u00eb (plastik ose me form\u00eb ylli) formohet kur skajet formohen m\u00eb shpejt se dy fytyrat e kristalit. Kristali n\u00eb rritje do t\u00eb p\u00ebrhapet jasht\u00eb. Megjithat\u00eb, kur fytyrat e tij rriten m\u00eb shpejt se skajet e tij, kristali b\u00ebhet m\u00eb i gjat\u00eb, duke formuar nj\u00eb gjilp\u00ebr\u00eb, nj\u00eb kolon\u00eb t\u00eb zbraz\u00ebt ose nj\u00eb shuf\u00ebr.<\/p>\n

Formave t\u00eb rralla t\u00eb d\u00ebbor\u00ebs<\/b>\"Teoria
\n
\n\"Teoria
\n
\n\"Teoria
\n
\nNj\u00eb tjet\u00ebr moment. Vini re fotografin\u00eb e tret\u00eb, t\u00eb b\u00ebr\u00eb nga Libbrecht n\u00eb Ontario veriore. Ky \u00ebsht\u00eb nj\u00eb kristal me \"kolonat e mbyllura\" - dy pllaka t\u00eb bashk\u00ebngjitura n\u00eb skajet e nj\u00eb kristali t\u00eb trash\u00eb kolonash. N\u00eb k\u00ebt\u00eb rast, \u00e7do pllaka ndahen n\u00eb dy pllaka shum\u00eb m\u00eb t\u00eb holla. Shikoni skajet, do t\u00eb shihni se si pllaka ndahet n\u00eb dy. Skajet e k\u00ebtyre dy pllakat e holla jan\u00eb p\u00ebraf\u00ebrsisht po aq t\u00eb mprehta sa nj\u00eb thik\u00eb. Gjithsej, gjat\u00ebsia e kolon\u00ebs s\u00eb akullit \u00ebsht\u00eb rreth 1.5 mm.<\/p>\n

Sipas modelit t\u00eb Libbrecht, avulli i ujit fillon t\u00eb depozitohet n\u00eb skajet e kristalit, dhe pastaj p\u00ebrhapet (difundon) n\u00eb sip\u00ebrfaqe ose n\u00eb skajet e kristalit, duke b\u00ebr\u00eb q\u00eb kristali t\u00eb rritet jasht\u00eb ose lart. Cili nga k\u00ebto procese \"fiton\", varet kryesisht nga temperatura.<\/p>\n

Duhet t\u00eb theksohet se modeli \u00ebsht\u00eb \"gjysm\u00eb-empirik\". Kjo do t\u00eb thot\u00eb se \u00ebsht\u00eb nd\u00ebrtuar pjes\u00ebrisht p\u00ebr t'u p\u00ebrputhur me at\u00eb q\u00eb ndodh, dhe jo p\u00ebr t\u00eb shpjeguar parimet e rritjes s\u00eb d\u00ebbor\u00ebs. Pasiguria dhe interaksionet midis molekulave t\u00eb pafund jan\u00eb shum\u00eb t\u00eb komplikuara p\u00ebr t'u zbuluar plot\u00ebsisht. Megjithat\u00eb, ekziston shpresa se idet\u00eb e Libbrecht do t\u00eb sh\u00ebrbejn\u00eb si nj\u00eb baz\u00eb p\u00ebr nj\u00eb model gjith\u00ebp\u00ebrfshir\u00ebs t\u00eb dinamik\u00ebs s\u00eb rritjes s\u00eb akullit, q\u00eb mund t\u00eb detajohet p\u00ebrmes matjeve dhe eksperimenteve m\u00eb t\u00eb holl\u00ebsishme.<\/p>\n

Mos mendoni se k\u00ebto v\u00ebzhgime jan\u00eb interesante vet\u00ebm p\u00ebr nj\u00eb grup t\u00eb ngusht\u00eb shkenc\u00ebtar\u00ebsh. Pyetje t\u00eb ngjashme lindin n\u00eb fizik\u00ebn e mjeteve t\u00eb kondensuar dhe n\u00eb fusha t\u00eb tjera. Molekulat e ila\u00e7eve, \u00e7ipat polikristalor\u00eb p\u00ebr kompjuter\u00ebt, element\u00ebt diellor\u00eb dhe shum\u00eb industri t\u00eb tjera varen nga kristalet me cil\u00ebsi t\u00eb lart\u00eb, dhe grupet e t\u00ebra merren me rritjen e tyre. Pra, d\u00ebbor\u00ebn e dashur t\u00eb Libbrecht mund t'i sh\u00ebrbej\u00eb shkenc\u00ebs.<\/p>\n

\u00c7far\u00eb tjet\u00ebr t\u00eb dobishme mund t\u00eb lexoni n\u00eb blog Cloud4Y<\/a><\/noindex><\/b><\/p>\n

\u2192 Energjia diellore e kripur<\/a><\/noindex>
\n\u2192 P\u00ebntesterat n\u00eb vij\u00ebn e par\u00eb t\u00eb siguris\u00eb kibernetike<\/a><\/noindex>
\n\u2192 Startupet q\u00eb mund t\u00eb habitin<\/a><\/noindex>
\n\u2192 Interneti me balona ajri<\/a><\/noindex>
\n\u2192 A nevojiten jast\u00ebk\u00eb n\u00eb Qendr\u00ebn e t\u00eb Dh\u00ebnave?<\/a><\/noindex><\/p>\n

Regjistrohuni n\u00eb kanalin ton\u00eb Telegram<\/a><\/noindex>-kanal, q\u00eb t\u00eb mos humbni artikullin tjet\u00ebr! Shkruajm\u00eb jo m\u00eb shpesh se dy her\u00eb n\u00eb jav\u00eb dhe vet\u00ebm p\u00ebr tema t\u00eb r\u00ebnd\u00ebsishme. Ngjash\u00ebm, n\u00ebse nuk e dini, startup-et mund t\u00eb marrin $10,000 nga Cloud4Y. Kushtet dhe formulari p\u00ebr ata q\u00eb jan\u00eb t\u00eb interesuar - n\u00eb faqen ton\u00eb: bit.ly\/2sj6dPK<\/a><\/noindex>
\n
Burimi: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u043c\u0435\u0448\u0430\u044e\u0442 \u043e\u0449\u0443\u0442\u0438\u0442\u044c \u0440\u0430\u0434\u043e\u0441\u0442\u044c \u043e\u0442 \u043f\u0440\u0438\u0432\u044b\u0447\u043d\u044b\u0445 \u0437\u0438\u043c\u043d\u0438\u0445 \u0437\u0430\u0431\u0430\u0432. \u041f\u043e\u044d\u0442\u043e\u043c\u0443 Cloud4Y \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u0442 \u0434\u043e\u0431\u0430\u0432\u0438\u0442\u044c \u043d\u0435\u043c\u043d\u043e\u0433\u043e \u0441\u043d\u0435\u0433\u0430 \u0432 \u043d\u0430\u0448\u0443 \u0436\u0438\u0437\u043d\u044c, \u043f\u043e\u0433\u043e\u0432\u043e\u0440\u0438\u0432 \u043e\u2026 \u0441\u043d\u0435\u0436\u0438\u043d\u043a\u0430\u0445. \u0421\u0447\u0438\u0442\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u0441\u043d\u0435\u0436\u0438\u043d\u043a\u0438 \u0431\u044b\u0432\u0430\u044e\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u0434\u0432\u0443\u0445 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