lub teeb siab
Cov kws tshawb fawb thawj zaug hauv keeb kwm tau tuaj yeem soj ntsuam qhov "siab" ntawm lub teeb exerting siab ntawm qhov nruab nrab uas nws dhau mus. Rau ib puas xyoo kev tshawb fawb tau sim sim ua kom paub tseeb tias qhov no tshwm sim hypothetical. Txog tam sim no, tsuas yog "rub" nkaus xwb ntawm lub teeb rays, thiab tsis yog "thawb" ib qho, tau sau npe.
Qhov kev soj ntsuam tseem ceeb ntawm lub siab ntawm lub teeb teeb tau ua ke los ntawm Suav cov kws tshawb fawb los ntawm Guangzhou University thiab Israeli cov npoj yaig los ntawm Rehovot Research Institute. Cov lus piav qhia ntawm txoj kev tshawb no tuaj yeem pom nyob rau hauv qhov teeb meem tshiab kawg ntawm New Journal of Physics.
Hauv lawv qhov kev sim, cov kws tshawb fawb tau pom qhov tshwm sim uas ib feem ntawm lub teeb pom los ntawm cov kua dej, thiab ib feem nkag mus rau hauv. Thawj thawj zaug, qhov saum npoo ntawm qhov nruab nrab deviated, uas ua pov thawj qhov muaj siab nyob rau hauv lub teeb beam. Cov xwm txheej zoo li no tau kwv yees rov qab rau xyoo 1908 los ntawm physicist Max Abraham, tab sis tseem tsis tau pom qhov kev sim pom tseeb.
