Ib lub gravitational nthwv dej yog an pom (tsis tau nrawm heev) ripple hauv qhov chaw. Gravitational nthwv dej taug kev ntawm lub teeb nrawm (186, 000 mais ib ob). Cov nthwv dej no nyem thiab ncab txhua yam hauv lawv txoj kev thaum lawv hla dhau. Lub gravitational nthwv dej yog qhov pom tsis tau (tseem ceev heev) ripple hauv qhov chaw.
Dab tsi yog qhov gravitational nthwv dej?
“Gravitational nthwv dej yog ripples hauv lub sijhawm. Thaum cov khoom txav mus, qhov curvature ntawm spacetime hloov thiab cov kev hloov no txav tawm sab nraud (xws li ripples ntawm lub pas dej) raws li gravitational nthwv dej. Lub gravitational nthwv dej yog qhov ncab thiab squash ntawm qhov chaw thiab yog li tuaj yeem pom los ntawm kev ntsuas qhov hloov ntawm qhov ntev ntawm ob yam khoom."
Dab tsi yog gravitational nthwv dej rau menyuam yaus?
Ntshai Ntshai yog ripples nyob rau hauv lub sijhawm uas yog tsim los ntawm acceleration lossis deceleration ntawm cov khoom loj hauv qhov chaw. Qhov no txhais tau tias, lawv yog cov ripples uas nqa lub zog gravitational deb ntawm qhov chaw ntawm kev cuam tshuam ntawm ob yam khoom hauv qhov chaw. Txhua yam khoom cosmic loj tuaj yeem tsim cov no ntawm acceleration.
LIGO txhais li cas?
LIGO stands rau " Laser Interferometer Gravitational-wave Observatory". Nws yog lub ntiaj teb qhov loj tshaj plaws gravitational yoj observatory thiab ib tug marvel ntawm precision engineering.
Yuav ua li cas gravitational nthwv dej propagate?
Ntsig Nkoj yog, hauv lawv qhov kev nkag siab yooj yim tshaj plaws, ripples hauv spacetime. … Yog hais tias lub hnub qub tawg raws li ib tug supernova,gravitational nthwv dej nqa lub zog tawm ntawm lub detonation ntawm qhov ceev ntawm lub teeb. Yog hais tias ob lub qhov dub sib tsoo, lawv yuav ua rau cov ripples nyob rau hauv lub sij hawm mus propagate zoo li ripples hla lub pas dej.
