Video: Yuav ua li cas hloov wavelength rau nanometer?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Multiply lub nthwv dej wavelength los ntawm ib tug billion, uas yog tus naj npawb ntawm nanometers hauv ib 'meter'. Nrog rau qhov piv txwv no, muab 2.82 x 10^-7 los ntawm 10^9 kom tau 282, wavelength hauv nanometers.
Thiab cov lus nug yog, dab tsi yog nws wavelength nyob rau hauv nanometers?
Hauv kev sib npaug, wavelength yog sawv cev los ntawm tus Greek tsab ntawv lambda (λ). Nyob ntawm tus hom yoj, wavelength tuaj yeem ntsuas hauv meters, centimeters, lossis nanometers (1m = 109 nm ). Cov zaus, sawv cev los ntawm tus Greek tsab ntawv nu (ν), yog tus tus naj npawb ntawm nthwv dej uas dhau ib qho taw tes hauv ib lub sijhawm teev tseg.
Tom qab, lo lus nug yog, dab tsi yog nm wavelength? Nanometers tsuas yog ib chav tsev ntawm qhov ntev, xws li meters los yog centimeters, uas tshwm sim yuav pab tau rau ntsuas qhov wavelength ntawm qhov pom kev. Nano prefix txhais tau tias 10^-9, yog li ib billion npaug tsawg dua ib 'meter'. Kev ntsuas. Koj tuaj yeem ntsuas qhov wavelength Lub teeb nrog lub spectrometer.
Hauv qhov no, koj yuav ua li cas hloov zaus mus rau wavelength?
Faib qhov nrawm los ntawm wavelength . Faib qhov nrawm ntawm nthwv dej, V, los ntawm wavelength hloov dua siab tshiab rau hauv meters, λ, txhawm rau nrhiav cov zaus , f.
Cov xim twg muaj qhov ntau zaus?
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Pom zoo:
Yuav ua li cas rau ib qho khoom wavelength thaum cov khoom txav ntawm koj?
Yog tias cov khoom txav mus rau koj, cov waves raug compressed, yog li lawv cov wavelength luv dua. Yog tias qhov khoom txav deb ntawm koj, cov nthwv dej tau nthuav tawm, yog li lawv lub wavelength ntev dua. Cov kab yog hloov mus rau ntev (redder) wavelengths --- qhov no hu ua aredshift
Yuav ua li cas koj pom wavelength nyob rau hauv nanometers?
Faib cov nthwv dej ceev los ntawm nws cov zaus, ntsuas hauv Hertz. Piv txwv li, yog tias yoj oscillates ntawm 800 THz, los yog 8 x 10^14Hz, faib 225,563,910 los ntawm 8 x 10^14 kom tau 2.82 x 10^-7 meters.Multiply yoj lub wavelength los ntawm ib billion, uas yog ces tus naj npawb ntawm nanometers nyob rau hauv ib meter
Yuav ua li cas rau lub zog thaum nws hloov ntawm ib daim ntawv mus rau lwm qhov?
Kev hloov pauv hluav taws xob yog thaum lub zog hloov ntawm ib daim ntawv mus rau lwm qhov - zoo li hauv lub tshuab hluav taws xob uas hloov lub zog kinetic ntawm dej rau hauv hluav taws xob. Thaum lub zog tuaj yeem hloov pauv lossis hloov pauv, tag nrho lub zog tsis hloov pauv - qhov no yog hu ua kev txuag hluav taws xob
Qhov kev hloov pauv twg yuav hloov daim duab A rau hauv daim duab B?
Ob daim duab tau hais tias yuav sib haum xeeb yog tias ib tus tuaj yeem tau txais los ntawm lwm tus los ntawm ib ntu ntawm kev txhais lus, kev xav, thiab kev sib hloov. Cov duab sib xws muaj qhov loj thiab zoo tib yam. Txhawm rau hloov daim duab A rau hauv daim duab B, koj yuav tsum xav txog nws hla y-axis thiab txhais ib chav nyob rau sab laug
Yuav ua li cas wavelength muaj feem xyuam rau qhov ceev ntawm lub teeb nyob rau hauv ib tug nruab nrab?
Qhov ceev ntawm lub teeb nyob rau hauv nruab nrab yog v = cn v = c n, qhov twg n yog nws qhov Performance index ntawm refraction. Qhov no txhais tau tias v = fλn, qhov twg λn yog lub wavelength nyob rau hauv nruab nrab thiab hais tias λn=λn λ n = λ n, qhov twg λ yog lub wavelength nyob rau hauv lub nqus tsev vacuum thiab n yog qhov nruab nrab qhov ntsuas ntawm refraction