{"id":59,"date":"2025-10-01T00:12:03","date_gmt":"2025-09-30T22:12:03","guid":{"rendered":"http:\/\/www.zsvltava.cz\/fyzika\/?p=59"},"modified":"2025-10-21T07:51:22","modified_gmt":"2025-10-21T05:51:22","slug":"teleso-a-latka","status":"publish","type":"post","link":"https:\/\/www.zsvltava.cz\/fyzika\/?p=59","title":{"rendered":"T\u011bleso a l\u00e1tka"},"content":{"rendered":"

V\u0161echno kolem n\u00e1s je tvo\u0159eno l\u00e1tkami \u2013 nap\u0159\u00edklad d\u0159evem, sklem, vodou nebo vzduchem. Kdy\u017e m\u00e1 l\u00e1tka ur\u010dit\u00fd tvar a velikost, naz\u00fdv\u00e1me ji t\u011bleso.<\/strong><\/p>\n

P\u0159\u00edklad: L\u00e1hev je t\u011bleso, ale je vyrobena z l\u00e1tky \u2013 nap\u0159\u00edklad ze skla nebo plastu.<\/p>\n

\ud83d\udc49 T\u011bleso = konkr\u00e9tn\u00ed v\u011bc
\n\ud83d\udc49 L\u00e1tka = z \u010deho je ta v\u011bc vyrobena<\/p>\n

\"\"<\/a> \"\"<\/a>\"\"<\/a> \"\"<\/a>\"\"<\/a> \"\"<\/a><\/p>\n

Z \u010deho jsou l\u00e1tky?<\/h2>\n

Od prad\u00e1vna se lid\u00e9 zab\u00fdvaj\u00ed t\u00edm, na jak\u00e9 nejmen\u0161\u00ed kousky by se dala rozd\u011blit hmota. Filosof D\u00e9mokritos<\/a> dosp\u011bl k n\u00e1zoru, \u017ee na konci d\u011blen\u00ed mus\u00ed b\u00fdt n\u011bjak\u00e1 nejmen\u0161\u00ed \u010d\u00e1st, kter\u00e1 ji\u017e nejde rozd\u011blit. Nazval ji ATOM<\/strong> – d\u00e1le ned\u011bliteln\u00fd<\/a>.<\/p>\n

Od t\u00e9to doby uplynulo n\u011bkolik tis\u00edc let, b\u011bhem kter\u00fdch se nejr\u016fzn\u011bj\u0161\u00ed v\u011bdci sna\u017e\u00ed tu \u00fapln\u011b nejmen\u0161\u00ed \u010d\u00e1ste\u010dku objevit.<\/p>\n

pod mikroskopem<\/h3>\n

N\u00e1sleduj\u00edc\u00ed obr\u00e1zky zdaleka nedosahuj\u00ed „atomov\u00fdch rozm\u011br\u016f“. Jsou to z\u00e1b\u011bry z mikrosv\u011bta na kter\u00fd se d\u00e1 pod\u00edvat mikroskopem. „Zv\u00ed\u0159\u00e1tka“ na obr\u00e1zk\u00e1ch jsou „jen“ 1 000 x men\u0161\u00ed ne\u017e 1 milimetr (srovnej: atom je je\u0161t\u011b 1 000 000 kr\u00e1t men\u0161\u00ed)<\/p>\n

\"\"<\/a> \"\"<\/a> \"\"<\/a>\"\"<\/a> \"\"<\/a> \"\"<\/a> \"\"<\/a> \"\"<\/a> \"\"<\/a><\/p>\n

bakterie: v ml\u00e9ce, v tlust\u00e9m st\u0159ev\u011b (2x), bakterie salmonely, rozto\u010d svrabu v k\u016f\u017ei, rozto\u010d z citrusu
zdroj: wikipedie, stefajir.cz<\/p>\n

3. \u0159\u00e1dek: kl\u00ed\u0161t\u011b, vir HIV v krvi a zrnka pylu
zdroj: Akademie v\u011bd \u010cR<\/p>\n

Dal\u0161\u00ed obr\u00e1zky z mikrosv\u011bta<\/h3>\n