2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Lub hauv paus chiv keeb ntawm kev tshawb fawb ntawm acoustics feem ntau yog vim Greek philosopher Pythagoras (6 xyoo pua bc), uas nws cov kev sim ntawm cov khoom ntawm vibrating hlua uas ua rau lub suab paj nruag zoo siab. ntawm qhov zoo uas lawv tau coj mus rau qhov kev sib tw uas dais nws lub npe.
Leonardo da Vinci nrhiav suab li cas?
Da Vinci tau nyiam tshwj xeeb hauv cov suab paj nruag hauv qab dej, thiab tshawb pom qhov kev tshawb fawb no hauv xyoo 1490 thaum nws tso lub raj rau hauv dej thiab tuaj yeem ntes cov hlab ntsha ntawm pob ntseg. … Da Vinci txuas qhov kev lwj ntawm lub suab los ntawm qhov chaw mus rau nws qhov kev tshawb pom ntawm kev pom qhov muag pom kev ploj zuj zus, uas nws ua raws li nws cov duab kos.
Leej twg xub pom lub suab?
Leonardo DaVinci, tus kws tshaj lij Italian thiab tus kws kos duab, feem ntau tau txais txiaj ntsig los ntawm kev tshawb pom lub suab txav hauv nthwv dej. Nws ua qhov kev tshawb pom no nyob ib puag ncig xyoo 1500. Txawm li cas los xij, qee qhov nyiaj tau hais tias tus kws tshawb fawb Roman Seneca tau tshawb pom lub suab nthwv dej hauv thawj xyoo pua AD.
leej twg yog leej txiv ntawm kev kawm niaj hnub ntawm acoustic?
Leej txiv ntawm kev tsim vaj tsev niaj hnub acoustics yog Asmeskas tus kws kho mob hu ua Wallace Clement Sabine. Yug hauv 1868, Sabine kawm tiav hauv Ohio State University hauv 1886 thiab nrhiav kev kawm tiav hauv Harvard University. Los ntawm 1895, nws yog ib tug kws pab tswv yim physics hluas hauv Harvard's physics department.
Nyob rau hauv dab tsi tsov rog tau siv acoustics thawj zaug?
Cov radar forerunners, uas tau txais lub npe menyuam yaus "ua tsov rog tubas" lossis "suab trumpets," tau siv thawj zaug thaum Ntiaj Teb Tsov Rog I los ntawm Fabkis thiab Tebchaws Askiv kom pom German Zeppelin airships.
Pom zoo:
Lub sijhawm nws tshawb nrhiav zebulon pike nrhiav?
Zebulon Pike yog ib tug tub rog Asmeskas tub rog thiab tshawb nrhiav uas tau ua haujlwm hauv Tsov Rog xyoo 1812. Thaum nws ntoj ncig, nws tau sim tshawb nrhiav qhov chaw ntawm Mississippi River. Nws txoj kev ntoj ncig pib thaum General James Wilkinson hauv 1805 txiav txim siab xa nws mus nrhiav qhov chaw ntawm tus dej.
Thaum twg tau txais kev pom zoo nrhiav tau?
In 2009, peb tus tsim thiab CEO Steve Marshall tau txheeb xyuas lub sijhawm hauv kev lag luam pov hwm lub neej thiab Reassured tau tsim. Peb pab tsev neeg tiv thaiv qhov tseem ceeb tshaj plaws rau lawv; Peb Lub Hom Phiaj rau 2020 yog los tiv thaiv ntau dua 200,000 tsev neeg hauv tebchaws Askiv.
Tus neeg nrhiav qhov tseeb puas ceeb toom rau tus neeg koj tab tom nrhiav?
Puas yog TruthFinder ceeb toom rau tus neeg koj saib? Koj qhov kev tshawb nrhiav TruthFinder ib txwm yog ntiag tug, yog li tus neeg nug yuav tsis paub tias koj tshawb nrhiav lawv daim ntawv tshaj tawm. Yog TruthFinder tsis qhia npe? rub daim ntawv tshaj tawm ntawm TruthFinder tsis qhia npe, yog li tsis muaj leej twg yuav raug ceeb toom thaum koj ua qhov kev tshawb nrhiav lossis thov daim ntawv qhia rau ib tus neeg tshwj xeeb.
Kuv nrhiav tau daim ntawv xav tau suab nyob qhov twg?
Nrhiav koj cov npe xav tau ntawm lub desktop version ntawm Audible yog qhov yooj yim: Saib cov ntawv qhia zaub mov saum toj kawg nkaus ntawm nplooj ntawv thaum mus saib Audible.com ntawm Mac lossis PC. Koj yuav pom "Xaiv Daim Ntawv"
Puas nrhiav tau lossis nrhiav tau?
Yog li, koj yuav tsum tau siv "could find". Lub modal verb, tau yog twb nyob rau hauv nws paste-form: ua. Yog li koj tsis tas yuav hloov pauv los nrhiav. Yuav nrhiav tau lossis nrhiav tau? "Ntaus" yog sib npaug. "
