2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Yog li ntawd, qhov kev xaiv raug yog A i.e., 15 Hz. Lus Cim: Tsis muaj qhov tsis muaj qhov sib haum xeeb hauv cov kav dej qhib. Qhov zoo ntawm lub suab los ntawm cov yeeb nkab qhib lub cev yog, yog li ntawd, ntau dua li ntawm cov yeeb nkab kaw hauv nruab nrog cev uas tag nrho cov kev sib haum xeeb ntawm cov hauv paus ntsiab lus ploj lawm.
Dab tsi muaj kev sib haum xeeb nyob hauv cov yeeb nkab qhib?
Qhov tseem ceeb(thawj harmonic) rau qhov qhib kawg yeeb nkab yuav tsum yog ib qho antinode ntawm ob qho kawg, vim huab cua tuaj yeem txav ntawm ob qho kawg. Tias yog vim li cas cov nthwv dej me tshaj plaws uas peb tuaj yeem haum tau pom hauv daim duab 11.
Qhov kev sib haum xeeb uas ploj lawm hauv cov yeeb nkab kaw?
Ib lub cev kaw cov yeeb nkab muaj qhov antinode ntawm qhov qhib kawg thiab ntawm qhov kawg kaw. "Nyob rau hauv cov yeeb nkab kawg kaw, txawm tus lej harmonics tsis tuaj."
Lub cev cov yeeb nkab twg yog qhov sib haum xeeb dua?
Cov lus teb yog: "Cov ntawv sau ua los ntawm lub cev qhib cov yeeb nkabmuaj ob qho tib si khib thiab txawm tias muaj kev sib haum xeeb tab sis daim ntawv uas tsim los ntawm lub cev kaw cov yeeb nkab tsuas muaj qhov sib txawv tsis zoo.. Vim muaj coob tus overtones los yog harmonics, daim ntawv uas tsim los ntawm ib tug qhib lub cev yeeb nkab yog sweeter."
Qhov twg yog nplua nuj nyob rau hauv kev sib haum xeeb ntawm cov yeeb nkab qhib lub cev lossis cov yeeb nkab kaw?
Vim suab tsim los ntawm cov yeeb nkab kawg ntawm lub cev muaj tag nrho cov kev sib raug zoo, yog li nws muaj txiaj ntsig zoo dua li tsim los ntawm cov yeeb nkab kawg kaw. Qhov tseem ceeb zaus ntawmib qho qhib yeeb nkab yog ob zaug ntawm qhov kaw ntawm tib qhov ntev.
Pom zoo:
Cov baryons uas ploj lawm nyob qhov twg?
tus so nyob qhov twg? Qhov chaw zoo tshaj plaws rau tus so ntawm baryons yuav tsum nkaum yog nyob rau hauv diffuse gas ntawm lub galaxies: lub intergalactic nruab nrab. Astronomers tuaj yeem kwv yees tus nqi ntawm cov pa hauv nruab nrab intergalactic los ntawm qhov tseem ceeb suav txog cov atoms uas nqus lub teeb los ntawm quasars nyob deb.
Yuav tsum cov kws tshawb fawb coj rov qab cov tsiaj uas ploj lawm?
Nrog rau kev sib sau ua ke ntawm cov tsiaj txhu uas ploj lawm 'cov ntaub ntawv caj ces, cov kws tshawb fawb tuaj yeem txhaj rau hauv lub qe ntawm cov tsiaj nyob uas muaj caj ces ze rau qhov lawv tab tom sim coj rov qab los. Yog li kev coj tsiaj rov qab los ntawm qhov tuag yog qhov ua tau, yog tias tsis tuaj yeem thiab kev siv nyiaj ntau.
Puas yog qhov kub thiab txias cuam tshuam qhov zaus ntawm cov yeeb nkab hauv nruab nrog cev?
Qhov cuam tshuam ntawm cua sov ntawm cov yeeb nkab zaus ntau dua li qhov nce ntawm qhov ntev ntawm cov yeeb nkab kom qhov zaus ntawm cov yeeb nkab hauv nruab nrog cev nce ntxiv thaum kub nce. Thaum kub nce zaus ntawm cov yeeb nkab hauv nruab nrog cev?
Puas yog cov neeg ua yeeb yam hauv nruab nrab theem cov neeg seev cev?
Ntawm cov cim tseem ceeb, peb tau ua si los ntawm cov neeg ua yeeb yam American Ballet Theatre - Ethan Stiefel, Sascha Radetsky, thiab Julie Kent Julie Kent Thaum Ntxov Nws yug Julie Cox hauv Bethesda, Maryland. Nws txiv yog ib tug kws kho mob nuclear thiab nws niam, uas yog los ntawm New Zealand, yog ib tug neeg ua yeeb yam ntaus pob thiab tom qab lub davhlau.
Nyob rau lub sijhawm 80 yeeb nkab?
Teem sijhawm 80 PVC yeeb nkab yog siv rau kev lag luam thiab kev siv dej siab dua. Teem sijhawm 80 PVC yeeb nkab tuaj yeem tuav 140 degrees F hauv qhov kub thiab txias. Cov yeeb nkab tuaj hauv cov qauv 10' lossis 20' ntu thiab muaj nyob rau hauv qhov kawg lossis lub tswb kawg yog li tsis muaj kev sib txuas yog xav tau rau kev teeb tsa.
