Ntawm qhov nrawm ntawm lub teeb?

2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07

Lub teeb mus ntawm kwv yees li 300, 000 km / thib obhauv lub tshuab nqus tsev, uas muaj qhov ntsuas pom ntawm 1.0, tab sis nws qeeb mus rau 225, 000 km / thib ob hauv dej (refractive index ntawm 1.3; saib daim duab 2) thiab 200, 000 kilometers ib ob nyob rau hauv iav (refractive index ntawm 1.5).

Tus qauv rau lub teeb nrawm yog dab tsi?

Formula: V=c / qhov twg: V=qhov nrawm ntawm cov khoom, hauv km / s lossis m / s (nyob ntawm seb qhov ceev ntawm lub teeb ntsuas li cas) c=ceev ntawm lub teeb, tog twg los 300, 000 km/s los yog 3.0 x 10^{8 m/s.=hloov nyob rau hauv wavelength ntawm qhov qub, tuaj yeem ntsuas hauv meters ntawm Å}

Lub teeb ceev 3x10 8 yog dab tsi?

Lub teeb nrawm yog ntsuas kom muaj nqi tib yam c=3x10 ⁸ m/s txawm leej twg ntsuas. Piv txwv li: Yog tias koj tua ib lub mos txwv rau pem hauv ntej ntawm lub dav hlau ntawm qhov ceev v_b, tus neeg soj ntsuam hauv av yuav ntsuas nws qhov ceev kom yog v_b + v _a qhov twg v_{a yog lub dav hlau ceev.}

Yuav ua li cas mus nrog kev nrawm nrawm?

Txawm hais tias qhov ceev no feem ntau cuam tshuam nrog lub teeb, nws tseem yog qhov nrawm uas txhua qhov tsis muaj qhov tsis zoo thiab thaj chaw cuam tshuam mus rau hauv nqus tsev, suav nrog hluav taws xob hluav taws xob (ntawm lub teeb yog ib tug me me nyob rau hauv lub zaus spectrum) thiab gravitational nthwv dej.

Ntawm lub teeb qhov twg siab?

Yog li qhov ceev ntawm lub teeb yog qhov siab tshaj plaws hauv nqus tsev. Lus Cim: Ceev ntawm lub teeb yogib txwm siab tshaj plaws hauv lub tshuab nqus tsev thiab tom qab ntawd cua. Txij li thaum lub refractive index ntawm huab cua yog ib.