Video: Dab tsi yog electromagnetic nthwv dej tag nrho muaj sib xws?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
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.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi tag nrho cov electromagnetic nthwv dej muaj nyob rau hauv sib xws Yuav ua li cas lawv txawv?
Txawm tias tag nrho cov electromagnetic tsis taug kev ntawm tib lub nrawm hla qhov chaw, lawv muaj txawv nyob rau hauv lawv wavelengths, frequencies, thiab qib zog. Wavelength yog qhov kev ncua deb ntawm cov ntsiab lus sib thooj ntawm qhov uas nyob ib sab nthwv dej (saib daim duab hauv qab no).
Ib yam li ntawd, txhua qhov hluav taws xob hluav taws xob hloov pauv li cas? Electromagnetic tsis yog nthwv dej uas muaj vibrating fais fab thiab magnetic teb. Lawv hloov lub zog los ntawm qhov teeb meem los yog hla qhov chaw. Cov hloov zog by electromagnetic tsis hu ua electromagnetic tawg . Thaum nws mus los ntawm qhov chaw, nws tsis poob lub zog mus rau nruab nrab raws li ib tug neeg kho tshuab wave ua.
Tib neeg kuj nug, dab tsi ua rau txhua qhov hluav taws xob hluav taws xob muaj nyob rau hauv cov lus nug?
Lawv tuaj yeem taug kev ntawm lub teeb nrawm. Lawv muaj tib lub wavelengths. Lawv tsuas taug kev los ntawm qhov teeb meem.
Ob yam dab tsi ua rau txhua qhov hluav taws xob hluav taws xob muaj sib xws?
Lawv txhua tus muaj cov khoom sib xws. Hauv lub tshuab nqus tsev, lawv txhua tus taug kev tib yam ceev - tus ceev ntawm teeb - yog 3 × 108 m/s. Lawv yog cov transverse nthwv dej, nrog cov oscillations yog hluav taws xob thiab magnetic teb. Zoo li tag nrho cov nthwv dej, lawv tuaj yeem cuam tshuam, refracted thiab diffraction.
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