Video: Lub dav hlau Protostellar yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
PROTOSTELLAR JETS THIAB DISK-KOJ
Ib qho tseem ceeb ntawm cov hnub qub hluas yog lawv txoj kev koom tes nrog. supersonic, heev collimated cua uas propagate nrog. polar axis ntawm protostar -disk system. Cov no. outflows yog kuaj nyob rau hauv protostellar qhov chaw tshaj qhov dav.
Raws li, Protostellar disk yog dab tsi?
Ib tug protoplanetary disk yog ib tug rotating circumstellar disk ntawm tuab roj thiab hmoov av puag ncig ib tug hluas tshiab khiv tsim lub hnub qub, ib tug T Tauri lub hnub qub, los yog Herbig AE / Nco lub hnub qub. Sab nraud illuminated yees duab-evaporating protoplanetary disks hu ua proplyds.
Tsis tas li ntawd, lub protostar yog dab tsi? -stär'] Ib yam khoom ntuj ceeb tsheej ua los ntawm huab cua sib cog lus ntawm interstellar nruab nrab (feem ntau hydrogen gas) uas nws thiaj li dhau los ua lub hnub qub tseem ceeb.
Kuj kom paub, qhov nruab nrab qhov loj ntawm lub protostar yog dab tsi?
Cov cores yog denser tshaj huab cua sab nrauv, yog li lawv tawg ua ntej. Raws li cov cores vau lawv tawg mus rau hauv clumps nyob ib ncig ntawm 0.1 parsecs nyob rau hauv qhov loj thiab 10 mus rau 50 hnub ci hauv huab hwm coj. Cov clumps no ces tsim rau hauv protostars thiab tag nrho cov txheej txheem yuav siv li ntawm 10 lab xyoo.
Protostar yog dab tsi thiab nws tsim li cas?
A protostar yog tsim raws li lub ntiajteb txawj nqus pib rub cov gases ua ke rau hauv ib lub pob. Cov txheej txheem no hu ua acretion. Raws li lub ntiajteb txawj nqus rub cov gasses los ze zog mus rau qhov chaw ntawm lub pob, lub zog gravitational pib cua sov rau lawv, ua rau cov gasses emit hluav taws xob. Thaum xub thawj, cov hluav taws xob tsuas yog khiav mus rau hauv qhov chaw.
Pom zoo:
Lub ntsiab lus ntawm dav hlau geometry yog dab tsi?
Hauv kev ua lej, lub dav hlau yog lub tiaj tus, ob sab ntawm qhov chaw uas txuas mus tsis kawg. Lub dav hlau yog ob-dimensional analogue ntawm ib qho point (zero dimensions), ib kab (ib dimension) thiab peb-dimensional qhov chaw
Peb tus yam ntxwv dav dav ntawm cov hlau yog dab tsi?
Peb yam ntxwv ntawm cov hlau yog lawv cov conductivity zoo, malleability, thiab ci iab tsos. Cov hlau yog cov zoo conductors ntawm tshav kub thiab hluav taws xob
Lub ntsiab lus dav dav rau RuBisCO yog dab tsi?
Ribulose-1,5-bisphosphate carboxylase/oxygenase, feem ntau paub los ntawm cov ntawv luv luv Rubisco, rubisco, RuBPCase, lossis RuBPco, yog ib qho enzyme koom nrog thawj kauj ruam tseem ceeb ntawm kev kho cov pa roj carbon monoxide, txheej txheem uas cov pa roj carbon dioxide hloov los ntawm cov nroj tsuag thiab lwm yam. Cov kab mob photosynthetic muaj zog nplua nuj
Dab tsi rog ua rau lub skydiver thaum ntog ntawm lub dav hlau?
Lub physics tom qab skydiving muaj kev cuam tshuam ntawm lub ntiajteb txawj nqus thiab huab cua tsis kam. Thaum ib tug skydiver dhia tawm ntawm ib lub dav hlau nws pib accelerating downwards, kom txog rau thaum nws mus txog lub davhlau ya nyob twg ceev. Qhov no yog qhov ceev uas tus cab los ntawm huab cua tsis kam raws nraim li lub zog ntawm lub ntiajteb txawj nqus rub nws
Lwm lub npe rau lub dav hlau ua haujlwm yog dab tsi?
Lub dav hlau ob sab yog hu ua Cartesian dav hlau, los yog lub dav hlau sib koom tes thiab cov axes yog hu ua kev sib koom tes axes lossis x-axis thiab y-axis. Lub dav hlau muab muaj plaub qhov sib npaug los ntawm keeb kwm hu ua quadrants