Nyob rau hauv luv luv, vim tias tsuas muaj 14 qhov tshwj xeeb ntawm kev xaiv qhov tsis sib xws hauv cov vectors hauv 3-chawthiab nrog cov vectors hauv paus, ib qho tuaj yeem tsim 14 qhov tshwj xeeb ntawm cov lattice hom.
Tus lej siab tshaj ntawm Bravais lattices yog dab tsi?
Ob lub Bravais lattices feem ntau suav hais tias sib npaug yog tias lawv muaj pawg isomorphic symmetry. Hauv qhov kev nkag siab no, muaj 5 qhov ua tau Bravais lattices hauv 2-dimensional qhov chaw, thiab 14 tau Bravais lattices hauv qhov chaw peb sab. 14 pawg ua tau zoo sib xws ntawm Bravais lattices yog 14 ntawm 230 qhov chaw.
14 Bravais lattice yog dab tsi?
Bravais Lattice yog hais txog the 14 qhov sib txawv 3-dimensional configurations rau hauv uas atoms tuaj yeem teeb tsa hauv cov muaju. … Yog li, Bravais lattice tuaj yeem xa mus rau ib qho ntawm 14 hom sib txawv ntawm chav tsev uas cov qauv siv lead ua tuaj yeem tsim los ntawm. Cov lattices no muaj npe tom qab Fabkis tus kws kho mob Auguste Bravais.
Vim li cas thiaj muaj 7 lub tshuab siv lead ua?
Rhombohedral, cubic, trigonal thiab lwm yam yog txhua yam tshwj xeeb ntawm "triclinic" chav tsev cell nrog ntau dua symmetry, nws pom tseeb tias tsis muaj qhov kawg ntawm kev xaiv uas muaj ntau dua. Cov no ua rau rau ntawm xya lub tshuab siv lead ua, thiab hexagonal yog rooj plaub tshwj xeebua rau xya.
Ntau npaum li cas Bravais lattices paub?
Lub kaum plaub Bravais lattices poob rau hauv xya lub tshuab siv lead ua uas yogtxhais los ntawm lawv cov kev sib hloov symmetry.