To je skvel\u00e1 ot\u00e1zka! Mo\u017eno v\u00e1s to upokoj\u00ed, ale ten d\u00fahov\u00fd alebo perle\u0165ov\u00fd lesk na \u0161unke je pri m\u00e4sov\u00fdch v\u00fdrobkoch v preva\u017enej v\u00e4\u010d\u0161ine pr\u00edpadov \u00faplne ne\u0161kodn\u00fd jav. Nie je to zn\u00e1mka toho, \u017ee by sa m\u00e4so pokazilo alebo \u017ee by v \u0148om boli chemik\u00e1lie.<\/p>\n\n\n\n
Tu je vysvetlenie, \u010do sa vlastne deje:<\/p>\n\n\n\n
Fyzika miesto ch\u00e9mie
Nejde o plese\u0148 ani o \u201eropn\u00fa \u0161kvrnu\u201c, ale o optick\u00fd jav zvan\u00fd difrakcia (ohyb) svetla.<\/p>\n\n\n\n
\u0160trukt\u00fara svaloviny: M\u00e4so sa sklad\u00e1 z tesne usporiadan\u00fdch svalov\u00fdch vl\u00e1kien. Ke\u010f sa \u0161unka rozre\u017ee (najm\u00e4 ve\u013emi ostr\u00fdm no\u017eom alebo strojom) kolmo na tieto vl\u00e1kna, odhalia sa ich konce.
Odraz svetla: Svalov\u00e9 vl\u00e1kna obsahuj\u00fa \u017eelezo, tuk a \u010fal\u0161ie prvky. Ke\u010f na tento \u0161pecifick\u00fd povrch dopadne svetlo, odraz\u00ed sa od vlhk\u00fdch koncov vl\u00e1kien a rozlo\u017e\u00ed sa na farby spektra \u2013 podobne ako ke\u010f svietite na CD alebo ke\u010f vid\u00edte d\u00fahu v mydlovej bubline.
Slan\u00fd n\u00e1lev: Tento efekt je v\u00fdraznej\u0161\u00ed u \u00faden\u00e9ho alebo nakladan\u00e9ho m\u00e4sa, preto\u017ee so\u013e a dusi\u010dnany (pou\u017e\u00edvan\u00e9 pri konzerv\u00e1cii) ovplyv\u0148uj\u00fa vlhkos\u0165 a \u0161trukt\u00faru vl\u00e1kien, \u010do odraz svetla e\u0161te zosil\u0148uje.
Kedy by ste mali by\u0165 naopak na pozore?
Aj ke\u010f je d\u00fahov\u00fd lesk norm\u00e1lny, existuj\u00fa in\u00e9 znaky, ktor\u00e9 zna\u010dia, \u017ee \u0161unka patr\u00ed do ko\u0161a:<\/p>\n\n\n\n
Znak \u010co to znamen\u00e1?
Z\u00e1pach Ak \u0161unka p\u00e1chne kyslo, \u010dpavkovo alebo jednoducho “divne”, nejedzte ju.
Povrch Je \u0161unka na dotyk extr\u00e9mne slizk\u00e1 alebo lepkav\u00e1 (viac ne\u017e len prirodzene vlhk\u00e1)? To je pr\u00e1ca bakt\u00e9ri\u00ed.
Farba D\u00fahov\u00e1 je v poriadku, ale \u0161ed\u00e9, zelenkast\u00e9 alebo blatist\u00e9 odtiene (bez kovov\u00e9ho lesku) s\u00fa jasn\u00fdm stopkou.
Verdikt: Ak va\u0161a \u0161unka vonia \u010derstvo a nie je slizk\u00e1, ten “d\u00fahov\u00fd kab\u00e1tik” je len fascinuj\u00faci fyzik\u00e1lny \u00fakaz a m\u00f4\u017eete si ju bez ob\u00e1v da\u0165.<\/p>\n\n\n\n
Mali ste k tej \u0161unke v pl\u00e1ne aj ten z\u00e1zvorov\u00fd lektvar, o ktorom sme hovorili, alebo to s\u00fa dve oddelen\u00e9 akcie v kuchyni?<\/p>\n","protected":false},"excerpt":{"rendered":"
To je skvel\u00e1 ot\u00e1zka! Mo\u017eno v\u00e1s to upokoj\u00ed, ale ten d\u00fahov\u00fd alebo perle\u0165ov\u00fd lesk na \u0161unke je pri m\u00e4sov\u00fdch v\u00fdrobkoch v preva\u017enej v\u00e4\u010d\u0161ine pr\u00edpadov \u00faplne ne\u0161kodn\u00fd jav. Nie je to […]<\/p>\n","protected":false},"author":2,"featured_media":2438,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-2437","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-zivotne-triky"],"_links":{"self":[{"href":"https:\/\/www.sk-babickinerady.top\/index.php?rest_route=\/wp\/v2\/posts\/2437"}],"collection":[{"href":"https:\/\/www.sk-babickinerady.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sk-babickinerady.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sk-babickinerady.top\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sk-babickinerady.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2437"}],"version-history":[{"count":1,"href":"https:\/\/www.sk-babickinerady.top\/index.php?rest_route=\/wp\/v2\/posts\/2437\/revisions"}],"predecessor-version":[{"id":2439,"href":"https:\/\/www.sk-babickinerady.top\/index.php?rest_route=\/wp\/v2\/posts\/2437\/revisions\/2439"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sk-babickinerady.top\/index.php?rest_route=\/wp\/v2\/media\/2438"}],"wp:attachment":[{"href":"https:\/\/www.sk-babickinerady.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sk-babickinerady.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sk-babickinerady.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}