Video: Dab tsi yog tib yam hauv txhua qhov hluav taws xob hluav taws xob?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Electromagnetic hluav taws xob yog ib hom zog uas feem ntau hu ua lub teeb. Feem ntau hais lus, peb hais tias lub teeb nkag mus rau hauv nthwv dej , thiab tag nrho cov hluav taws xob electromagnetic taug kev ntawm ib yam ceev uas yog hais txog 3.0 * 108 meters ib thib ob los ntawm lub tshuab nqus tsev.
Tom qab ntawd, dab tsi tag nrho cov nthwv dej hauv electromagnetic spectrum 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 cov oscillations yog hluav taws xob thiab magnetic teb. Zoo li txhua zaus , lawv tuaj yeem cuam tshuam, refracted thiab diffraction.
Dab tsi yog lub npe rau tag nrho cov hluav taws xob hluav taws xob uas muaj nyob? Xov tooj cua nthwv dej , infrared rays, pom lub teeb, ultraviolet rays, X-rays, thiab gamma rays yog tag nrho hom ntawm electromagnetic hluav taws xob.
Ib sab saum toj no, puas yog txhua qhov hluav taws xob hluav taws xob muaj qhov sib txawv?
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.
Ob lub zog ntawm electromagnetic tsis yog dab tsi?
Zoo li lwm yam nthwv dej , electromagnetic tsis muaj khoom ntawm ceev, wavelength, thiab zaus.
Pom zoo:
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