Qhov ceev ntawm lub teeb zaus yog dab tsi?
Qhov ceev ntawm lub teeb zaus yog dab tsi?

Video: Qhov ceev ntawm lub teeb zaus yog dab tsi?

Video: Qhov ceev ntawm lub teeb zaus yog dab tsi?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Lub peb hlis ntuj
Anonim

wavelength = ceev ntawm lub teeb / zaus Luas = 3 x 108 m/s 1.06 x 108 Hz = 3 meters - txog 10 feet.

Ib yam li ntawd, tib neeg nug, lub teeb zaus yog dab tsi?

Cov zaus yog tus naj npawb ntawm nthwv dej uas dhau ib qho chaw hauv qhov chaw thaum lub sijhawm ib ntus, feem ntau yog ib thib ob. Peb ntsuas nws nyob rau hauv units ntawm cycles (yoj) ib ob, los yog hertz. Cov zaus ntawm pom teeb yog hu ua xim, thiab thaj tsam ntawm 430 trillion hertz, pom li liab, mus rau 750 trillion hertz, pom li violet.

Ib yam li ntawd, puas yog qhov ceev? Kev sib raug zoo ntawm cov ceev ntawm suab, nws zaus , thiab wavelength yog tib yam li rau tag nrho cov nthwv dej: vw = f hl, vw yog cov ceev ntawm suab, f yog nws zaus , thiab λ yog nws lub wavelength.

Ib yam li ntawd, koj tuaj yeem nug, qhov kev sib raug zoo ntawm kev ceev thiab zaus yog dab tsi?

Wave ceev yog qhov kev ncua deb ntawm nthwv dej mus rau hauv ib lub sijhawm, xws li tus lej ntawm metres nws mus rau ib pliag. Wave ceev muaj feem xyuam rau wavelength thiab wavelength zaus los ntawm kev sib npaug: Ceev = Wavelength x Ntau zaus . Qhov kev sib npaug no tuaj yeem siv los xam cov nthwv dej ceev thaum wavelength thiab zaus paub.

Muaj pes tsawg Mach qhov ceev ntawm lub teeb?

Piv txwv tias nws yog huab cua hauv hiav txwv, qhov ceev ntawm lub suab yog 1225 kph, thiab lub ceev ntawm lub teeb yog 299,709k. Qhov no ua rau cov ceev ntawm lub teeb Mach 880, 777.

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