Qhov kawg ntawm cov yeeb nkab yog li no a qhov chaw txav chaw. Txhawm rau kom tsis txhob txav huab cua, kaw cov yeeb nkab kawg yuav tsum tau siv lub zog ntawm cov molecules los ntawm kev siv lub siab, kom qhov kawg kaw yog lub siab antinode.
Puas yog cov yeeb nkab kaw ntawm ib kawg lossis nws qhib rau ob qhov kawg?
Kev sib txuas ntawm tag nrho cov cuab yeej no yog qhov ntev ntawm lub raj txiav txim siab lub suab ntawm cov yeeb nkab ua. … Nco ntsoov tias cov kav dej tuaj yeem muaj ob qhov kawg qhib, lossis muaj ib qho kawg qhib thiab ib kawg kaw. Rau lub suab nthwv dej, qhov qhib kawg ntawm cov yeeb nkab zoo li qhov kawg pub dawb, thaum lub kaw qhov kawg ntawm cov yeeb nkab zoo li qhov kawg.
Thaum ib kawg ntawm cov yeeb nkab kaw?
Ib lub yeeb nkab kaw yog ib qho uas ib qho kawg qhib thiab lwm qhov raug kaw, thiab zoo li cov kav dej qhib, cov no tuaj yeem tsim nthwv dej nrog lub suab ntawm qhov tsim nyog.
Vim li cas thiaj muaj qhov kawg ntawm cov kav dej kaw?
kaw cov raj Cov huab cua molecules tsis muaj kev vibration rov qab thiab tawm mus rau tib lub raj, yog li
qhov kev hloov chaw sawv nthwv dej muaj yogib qho ntawm qhov kaw kawg. Qhov qhib kawg ntawm lub raj yog ib txwm muaj antinode txij li cov huab cua molecules tuaj yeem vibrate horizontally parallel mus rau qhov ntev ntawm lub raj.
Vim li cas thiaj tsis muaj qhov sib haum xeeb hauv cov yeeb nkab uas raug kaw ntawm ib kawg?
Closed Cylinder Air Column
Qhov kawg kaw yog txwv los ua ib qho ntawm nthwv dej thiab qhov qhib kawg yog qhov tseeb antinode. Qhov no ua rau lub hom phiaj tseem ceeb xws li lub wavelength yog plaub npaug ntawm qhov ntev ntawm huab cua. Qhov kev txwv ntawm qhov kawg kaw tiv thaiv kablos ntawm kev tsim cov kev sib raug zoo.
