Doppler nyhuv

Lub doppler nyhuv yog ib qho ntawm feem zoo kawg li discoveries nyob rau hauv txoj kev tshawb no ntawm lub thaj chaw ntawm yoj phenomena. Nws universal xwm txiav txim seb yog hnub no raws li nyob rau hauv no cov nyhuv yog ntau txhiab ntau pab kiag li lawm nyob rau hauv sib txawv spheres ntawm tib neeg kev ua si. Cov tshwm sim, uas ces twb muaj npe nyob rau hauv Honor ntawm nws discoverer, nws twb nrhiav tau los ntawm Austrian physicist Christian doppler li thaum ntxov raws li lub nruab nrab-puas tawm xyoo dhau. Doppler ntsuam ua zog tsis tau txais los ntawm lub receiver ntawm lub rooj noj thiab nyob ruaj ruaj qhov chaw.

Yog hais tias peb xav txog qhov doppler nyhuv nyob rau hauv qhov nyuaj daim ntawv no, nws yuav tsum tau muab sau tseg tias lub cev tshwm sim qhia txog cov kev hloov nyob rau hauv zaus ntawm lub teeb liab nrog hwm rau tus nqi ntawm lub zog ntawm lub hauv paus ntawm lub teeb liab los ntawm lub receiver uas tau txais nws. Piv txwv li, ib tug yoj uas los ntawm ib co qhov twg los, thiab cov uas muaj ib tug tej yam taag zaus, yuav tau txais los ntawm lub receiver yog twb nyob rau ib tug txawv zaus yog thaum lub sij hawm nws cov zaj ntawm lub hauv paus thiab receiver hloov lawv txoj hauj lwm txheeb ze rau txhua tus lwm yam, uas yog txav mus li. Nyob rau hauv no daim duab yuav nce los yog yuav zaus txo nyob rau hauv cov kev coj nyob rau hauv uas qhov tsiv txheeb ze mus rau lub receiver. Muab lub doppler nyhuv, peb yuav tsis qhia hais tias yog hais tias tus neeg txais tsiv deb ntawm qhov chaw - tus nqi ntawm cov yoj zaus lawm. Yog hais tias lub receiver yog nce nthwv dej tawg qhov twg los, ces txoj kev ntsuas ntawm zaus ntawm lub yoj qab. Raws li, los ntawm cov kev cai lij choj nws yog xaus lus hais tias yog qhov uas cov tsis thiab lub receiver thaum lub sij hawm nws cov zaj tsis hloov nws txoj hauj lwm, ces tus nqi ntawm cov yoj zaus yuav nyob twj ywm li qub.

Tseem ceeb thiab lwm clause uas characterizes lub doppler nyhuv. Qhov no tej khoom vaj tse yog ib yam twg uas yog nyob rau hauv contradiction nrog rau cov cai ntawm Relativity. Lub fact tias cov zaus hloov yog txiav txim tsis tsuas yog mus los yog tsis yog ib tug receiver thiab ib qhov chaw ntawm hluav taws xob, thiab qhov tseeb hais tias nws txav. Cov kev ntsuam pom tau hais tias lub zaus ua haujlwm yog txiav txim nyob rau hauv uas ib tug movable yam khoom, qhov ntau hnov, tus me tus divergence ntawm lub receiver thiab lub kev tsis ncaj ncees qhov velocities rau tus tshaj tawm yoj zog. Nyob rau hauv qhov tseeb, nyob rau hauv tus neeg mob qhov twg muaj ib tug manifestation ntawm cov doppler nyhuv, muaj yog tsis muaj contradiction nrog lub hom phiaj ntawm Relativity tsis tuaj, vim hais tias no nws yog ib qho tseem ceeb tsis yog tus txheeb ze zog ntawm tus receiver thiab lub hauv paus thiab qhov xwm ntawm lub zog uas tsis nyob rau ib qho elastic nruab nrab nyob rau hauv uas nws txav.

Tej zog doppler nyhuv manifests kuj nyob rau hauv relation mus acoustic tsis keeb kwm, thiab electromagnetic vuag, tsuas yog hais tias nyob rau hauv cov ntaub ntawv ntawm electromagnetic vuag zaus offset phenomenon tsis yog nyob ntawm seb qhov chaw los yog lub receiver tsiv.

Yuav ua li cas li no es paub daws teeb nyhuv, pom, txawm li cas los, yog yooj yim txaus. Piv txwv li, lub doppler cov nyhuv hauv acoustics yuav pom, yuav tsum tau pes tsawg - hnov, ib lub sij hawm thaum sawv nyob rau hauv lub tsheb jam, koj hnov ib tug tsib rov dhau los ntawm thaum muaj xwm ceev cov tsheb. Muaj tseeb tag nrho uas sau hais tias yog hais tias xws li ib lub tsheb yog cuag - lub suab ntawm ib tug tsib rov suab ib txoj kev siab, thiab thaum twg ib lub tsheb overtakes koj - lub suab ntawm ib tug tsib rov hauv qab no. Nws cia li tuaj yuav qhia cov kev hloov tseem ceeb ntawm cov zaus ntawm lub acoustic teeb liab.

Great tseem ceeb doppler zaus plays nyob rau hauv radar, nrog rau kev hwm mus electromagnetic vuag. Nyob rau lub hauv paus ntawm no cov nyhuv ua hauj lwm tag nrho cov radars thiab lwm yam pab kiag li lawm mus ntes mus khoom nyob rau hauv lub feem ntau varied teb ntawm tib neeg kev ua si.

Nws khoom no siv nyob rau hauv kev kho mob technology rau qhov kev txiav txim ntawm cov ntshav khiav, raws li yog paub zoo tias, xws li ib tug txheej txheem raws li doppler echocardiography. Nyob rau lub hauv paus ntawm lub doppler nyhuv, los ua ib tug navigation apparatus rau underwater cov hlab ntsha, nrog nws cov kev siv ntawm meteorologists ntsuas cua lub zog thiab ceev ntawm lub zog ntawm huab masses.

Txawm nyob rau hauv nws astronomy ntsuam siv cov doppler nyhuv. Yog li, qhov loj tshaj plaws ua haujlwm ntawm lub spectra los ntawm ntau yam xilethi-aus khoom, txiav txim los ntawm lawv tus nqi zog nyob rau hauv qhov chaw, nyob rau hauv particular, precisely rau lub hauv paus ntawm no cov nyhuv twb tau hypothesized los nthuav rau ntawm ntug.