Vim li cas qhov ceev ntawm lub teeb hloov nyob rau hauv txawv nruab nrab?
Vim li cas qhov ceev ntawm lub teeb hloov nyob rau hauv txawv nruab nrab?

Video: Vim li cas qhov ceev ntawm lub teeb hloov nyob rau hauv txawv nruab nrab?

Video: Vim li cas qhov ceev ntawm lub teeb hloov nyob rau hauv txawv nruab nrab?
Video: txhob hnov qab kuv lub npe - Bee lee [Official MV] 2022-23 2024, Kaum ib hlis
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Ceev ntawm lub teeb ua tsis yog hloov , nws yuav tsum tau mus ntau dua nyob rau hauv ib nruab nrab tshaj hauv lub tshuab nqus tsev, Thaum teeb yog hla a nruab nrab , cov electrons nyob rau hauv lub nruab nrab absorbs lub zog los ntawm lub teeb thiab tau zoo siab thiab tso lawv rov qab. Tsuas yog vim li cas vim li cas photon tuaj yeem taug kev ntawm lub teeb ceev yog vim nws yog mass tsawg.

Hais txog qhov no, yog vim li cas qhov ceev ntawm lub teeb hloov?

Ceev ceev Tej zaum yuav tsis tas li, Physicists hais. Einstein txoj kev xav ntawm kev sib txheeb tshwj xeeb ntawm cov ceev ntawm lub teeb , 186, 000 mais ib ob (300 lab meters ib ob). Thiab qhov sib txawv lub teeb ceev yuav hloov lub zog ntawm molecular bonds thiab qhov ceev ntawm nuclear teeb meem nws tus kheej.

Ib sab saum toj no, lub teeb nrawm npaum li cas los ntawm ntau qhov nruab nrab? Lub teeb mus ncig ntawm kwv yees li 300, 000 kilometers ib ob nyob rau hauv lub tshuab nqus tsev vacuum, uas muaj ib tug refractive index ntawm 1.0, tab sis nws slows down mus rau 225,000 kilometers ib ob nyob rau hauv dej (refractive index = 1.3; saib daim duab 1) thiab 200,000 kilometers ib ob. hauv iav (refractive index ntawm 1.5).

Kuj paub, thaum lub teeb hla ntawm ib qho nruab nrab mus rau lwm qhov hloov pauv li cas?

Refraction. Thaum lub teeb mus los ntawm ib qho nruab nrab mus rau lwm qhov , ceev kev hloov , zoo li lub wavelength. Qhov Performance index ntawm refraction kuj tuaj yeem hais nyob rau hauv cov nqe lus ntawm wavelength: Txawm tias qhov ceev kev hloov thiab wavelength kev hloov , qhov zaus ntawm cov teeb yuav tas li.

Lub teeb puas hloov ceev?

Einstein txoj kev xav ntawm kev sib txheeb tshwj xeeb ntawm cov ceev ntawm teeb , 186, 000 mais ib ob (300 lab meters ib ob). Cov ceev ntawm teeb yog tas li, los yog li phau ntawv hais. Tab sis qee cov kws tshawb fawb tab tom tshawb nrhiav qhov ua tau tias qhov no cosmic ceev txwv kev hloov , qhov tshwm sim ntawm qhov xwm txheej ntawm lub tshuab nqus tsev.

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