Vim li cas achernar tiaj tus?

Cov txheej txheem:

Vim li cas achernar tiaj tus?
Vim li cas achernar tiaj tus?
Anonim

Ib tug yooj yim artist lub tswvyim ntawm lub hnub qub Achernar. Nws yog flattened vim - txawm hais tias yog li 6 mus rau 8 npaug loj dua peb lub hnub, nws tig los yog tig rau ntawm nws axis txog 15 npaug nrawm dua, ua tiav ib qho kev sib hloov hauv 2 Ntiaj Teb-hnub, hauv sib piv rau lub hnub 25-hnub tig.

Lub hnub qub flattest yog dab tsi?

ntsuas tau meej heev qhia tau tias qhov kub, ci hnub qub Achernar yog tus paub zoo tshaj plaws.

Lub hnub qub twg yog Achernar?

Achernar (Arabic rau "qhov kawg ntawm tus dej") yog 144 lub teeb xyoo ntawm lub ntiaj teb. Nws yog lub hnub qub binary nrog lub hnub qub B, Achernar A, raws li nws thawj thiab ntau lub hnub qub A-hom hnub qub, Achernar B, orbiting thawj ntawm qhov deb ntawm 6.7 astronomical units. (1 billion km, lossis 621 lab mais) nrog lub sijhawm kwv yees li 15 xyoo.

Lub luminosity ntawm Achernar yog dab tsi?

Achernar, Alpha Eridani (α Eri), yog chav kawm B hydrogen-fusing dwarf nyob rau hauv lub hnub qub Eridanus. Nws kwv yees luminosity yog 3, 150 npaug ntawm lub hnub.

Puas Achernar pom los ntawm Lub Ntiaj Teb?

Lub hnub qub cuaj ci ntsa iab tshaj plaws hauv txhua lub ntuj, Achernar, yog qhov pom zoo rau cov neeg saib xyuas nyob rau yav qab teb Hemisphere. … Qhov ntawd yog vim – txawm tias nws qhov loj ntawm 0.45, ua rau nws ci ntsa iab li lub hnub qub ci tshaj plaws pom los ntawm lub ntiaj teb – nws nyob deb heev sab qab teb ntawm lub dome ntawm cov hnub qub nyob ib puag ncig ntiaj teb.

Pom zoo:

Nthuav cov khoom
Puas yog homomorphism tib yam li isomorphism?
Nyeem ntxiv

Puas yog homomorphism tib yam li isomorphism?

Isomorphism yog homomorphism tshwj xeeb. Greek keeb kwm "homo" thiab "morph" ua ke txhais tau tias "zoo tib yam." Muaj ob qhov xwm txheej uas homomorphisms tshwm sim: thaum ib pab pawg yog ib pawg ntawm lwm pawg;

Yuav tau sawv los yog tshwm sim?
Nyeem ntxiv

Yuav tau sawv los yog tshwm sim?

Peb hom tshwm sim yog arise, sawv, arisen. Nws yog siv hauv cov ntsiab lus tseem ceeb: Ib lub sijhawm tshwm sim thiab nws txiav txim siab los ua txoj haujlwm hauv Brussels. Ib qho teeb meem tshwm sim nrog kuv daim ntawv hla tebchaws. Koj siv arose hauv kab lus li cas?

Nyob hauv qab ceg cov leeg nqaij gastrocnemius khoov?
Nyeem ntxiv

Nyob hauv qab ceg cov leeg nqaij gastrocnemius khoov?

Cov leeg nqaij gastrocnemius flexes ko taw ntawm pob qij txha- uas yog nws ua rau taw taw ko taw nqes los ntawm khoov nws ntawm pob taws pob taws, xws li thaum koj sawv ntawm koj. cov ntiv taw. Qhov kev txiav txim no hu ua plantar flexion. Lub gastrocnemius kuj flexes ceg ntawm lub hauv caug sib koom.