Video: Puas yog tag nrho cov electromagnetic tsis muaj tib lub amplitude?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov lus teb tsis yog tus amplitude txij li thaum amplitude muaj feem xyuam rau qhov siv ntawm cov electromagnetic field, uas yog lub square ntawm lub amplitude . Yog li ntawd ntau khaus teb ntawm lub teeb muaj siab dua amplitudes . Tag nrho cov electromagnetic tsis muaj tib yam ceev, c, uas yog qhov ceev ntawm lub teeb.
Yog li, puas electromagnetic tsis muaj amplitude?
Tab sis muaj zog hauv ib qho electromagnetic yoj , txawm nws yog absorbed los yog tsis. Qhov no muaj tseeb rau nthwv dej ntawm guitar hlua, rau dej nthwv dej , thiab rau suab nthwv dej , qhov twg amplitude yog proportional rau siab. Hauv electromagnetic tsis , cov amplitude yog lub siab tshaj plaws teb lub zog ntawm cov hluav taws xob thiab magnetic teb.
Qhov thib ob, dab tsi ua rau txhua qhov hluav taws xob hluav taws xob muaj qhov sib xws? Lawv txhua tus muaj yam hauv feem ntau . Hauv lub tshuab nqus tsev, lawv tag nrho taug kev ntawm tib qhov ceev - qhov ceev ntawm lub teeb - uas yog 3 × 108 m/s. Lawv yog tag nrho transverse nthwv dej , nrog oscillations yog hluav taws xob thiab magnetic teb. Zoo li txhua zaus , lawv tuaj yeem cuam tshuam, refracted thiab diffracted.
Tsis tas li lo lus nug yog, puas yog txhua qhov hluav taws xob hluav taws xob muaj qhov sib txawv?
Electromagnetic tsis suav nrog lub teeb pom kev, xov tooj cua nthwv dej , X-rays, thiab lwm yam. Dab tsi distinguishes cov sib txawv bands ntawm lub teeb yog lawv zaus (los yog wavelength). Tab sis dab tsi lawv txhua tus muaj nyob rau hauv ntau yog hais tias lawv mus ntawm lub ib yam ceev hauv lub tshuab nqus tsev.
Cov yam ntxwv twg zoo ib yam rau txhua qhov hluav taws xob hluav taws xob hauv lub tshuab nqus tsev?
Thaum taug kev hauv lub tshuab nqus tsev, cov hluav taws xob nthwv dej los ntawm electromagnetic spectrum tag nrho taug kev tib yam ceev . Kev nrawm yog ceev nrog kev taw qhia, yog li lawv txhua tus yuav taug kev ntawm tib lub nrawm, hais lus tiag tiag. Tab sis zaus thiab wavelength txawv heev.
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