Dab tsi yog qhov zaus ntawm lub teeb liab?
Dab tsi yog qhov zaus ntawm lub teeb liab?

Video: Dab tsi yog qhov zaus ntawm lub teeb liab?

Video: Dab tsi yog qhov zaus ntawm lub teeb liab?
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Ntau zaus yog tus naj npawb ntawm qhov tshwm sim ntawm arepeating tshwm sim hauv ib chav tsev ntawm lub sijhawm. Ntau zaus yog ib qho tseem ceeb parameter siv nyob rau hauv science thiab engineering los qhia tus nqi ntawm oscillatory thiab vibratory phenomena, xws li mechanical vibrations, suab teeb liab (suab), xov tooj cua yoj, thiab lub teeb.

Li ntawd, koj yuav nrhiav tau qhov zaus ntawm lub teeb liab li cas?

Cov mis rau zaus yog: f( zaus ) = 1 / T (lub sijhawm). f = c / λ = yoj speedc (m / s) / wavelength λ (m). Cov mis rau lub sij hawm yog: T (lub sij hawm) = 1 / f ( zaus ). λ = c / f = yoj speedc (m/s) / zaus f (Hz).

Ib yam li ntawd, lub teeb liab siab zaus yog dab tsi? Ntau zaus (HF) yog lub npe ITU rau ntau yam ntawm xov tooj cua zaus electromagnetic tsis ( xov tooj cua waves) nruab nrab ntawm 3 mus rau 30 megahertz (MHz). HF bandis yog ib feem tseem ceeb ntawm shortwave band ntawm zaus , kev sib txuas lus ntawm no zaus feem ntau hu ua shortwave xov tooj cua.

Ib yam li ntawd, qhov zaus ntawm nthwv dej yog dab tsi?

Ntau zaus piav txog tus naj npawb ntawm nthwv dej uas dhau qhov chaw ruaj khov nyob rau hauv ib lub sijhawm. Yog li yog tias lub sijhawm siv rau ib qho yoj kom dhau yog 1/2 thib ob, tus zaus yog 2 per second. Qhov ntsuas hertz, luv Hz, yog tus naj npawb ntawm nthwv dej uas dhau los ntawm persecond.

Dab tsi yog tus qauv rau wavelength?

Lub wavelength tuaj yeem suav nrog cov hauv qab no qauv : wavelength = yoj velocity/frequency. Lub wavelength feem ntau yog qhia nyob rau hauv units ntawm meters. Lub cim rau wavelength yog Greek lambda λ, soλ = v/f.

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