Suab phenomena nyob rau hauv lub animate thiab tswg xwm: piv txwv

Muaj coob tus neeg xav mus nrhiav cov lus teb rau cov lus nug txog dab tsi lub suab los, raws li zoo raws li qhov uas lawv tuaj ntawm. Nyob rau dab tsi lub hauv paus ib suab sib txawv los ntawm lwm leej lwm tus? Vim li cas peb hnov lawv?

Niaj hnub no peb saib cov physics seem, uas tshuaj xyuas qhov tshwm sim ntawm lub suab. Seem no yog hu ua acoustics.

Oscillation - qhov ua rau ntawm tag nrho cov suab ntawm cov ntiaj chaw

Yog peb tau hnov ib suab nrov nrov, ces lub hlwb peb yuav xav txog tej yam no qhov twg los, uas nws luam tawm. Yog li ntawd, yog tias koj xav txog nws, muaj peb yuav pom dab tsi txawv. Thaum peb hais lus, lub suab cords co hauv peb lub cev. Yog li, peb hnov koj lub suab hais lus. Piv txwv ntawm lub suab phenomena nyob rau hauv physics peb pom thiab hnov txhua txhua hnub.

keeb kwm ntaub ntawv

Kawm physics suab phenomena txij ancient sij hawm. Peb nyob mus ib txhis nrog nyob rau hauv lub neej yog lub nrov thiab suab. Muaj suab nrov deeg peb qab ntxiag, lwm leej lwm tus thab peb. Nrog rau cov lus, peb yuav xaus uas lub suab thiab suab los muaj sib txawv los rau lub siab thiab tib neeg noj qab haus huv. Nws yog lub npe hu hais tias ib co ntawm lub suab nrov ib tug neeg muaj peev xwm mus vwm, thiab muaj suab uas yuav kho tej yam kab mob nyob rau hauv tib neeg. Cov discoveries ua txiv neej ua ntej peb era. Ib me ntsis tom qab, koj paub, dab tsi yog lub suab los. Nyob rau hauv lub meantime, cia tus tham txog lub discoveries nyob rau hauv lub teb ntawm acoustics.

ancient civilizations

Amazing kho nyhuv ntawm lub suab nyob rau hauv tib pov thawj pom tus tuam tsev ancient Egypt. Lawm, lawv yog ib cov tshwm sim siv rau kev cai dab qhuas. Tam sim no lub Egyptians ritual kev noj kev haus twb tsis yog tsis muaj choruses thiab zaj nkauj qhuas Vajtswv. Ib me ntsis tom qab, lub suab paj nruag thiab suab tawg twb nyob rau hauv Christian churches. Ib tug theem siab ntawm cov suab paj nruas kev txawj ua ntej txhua leej txhua tus mastered rau lub Khab. Rov qab nyob rau hauv cov hnub lawv tsim thiab nquag siv suab paj nruas cim. Cov Khab muab txhua daim ntawv ib tug tej yam muaj nuj nqis. Qhov kawg ntawv ntau "tsis" yog hais txog lub siab, qhov kev ceeb toom "Pa" yog hais txog rau kev xyiv fab.

Pythagoras - leej txiv ntawm acoustics

Txij ancient sij hawm, cov neeg tau nrhiav mus tshawb cov suab tshwm sim. Piv txwv li, lub ancient Greek tus paub txog thiab philosopher Pythagoras lub mathematician, uas nyob txog 2500 xyoo dhau los, ua ib tug ntau yam ntawm thwmsim nrog cov suab. nws muaj pov thawj hais tias tsis muaj suab nrov ntawm seev yog xam qhovkev rau cov uas tau muaj ntev hlua vim nws discoveries. Thaum txoj hlua yog shortened los ntawm ib nrab, thiab lub suab yog nce los ntawm ib tug octave. Vim cov kev tshawb pom Pythagoras yog thaum pib ntawm lub seem ntawm physics - acoustics. Cov thawj heev acoustic seev tsim Greeks, uas nyob rau hauv antiquity. Lawv siv lawv nyob rau hauv theaters. Cov pab kiag li lawm tau nyob rau hauv daim ntawv ntawm cov me me horns, yog cov lam tso rau hauv nws daim npog qhov ncauj lug txhim khu lub suab. Los ntawm txoj kev, nws yog heev nthuav phenomenon ntxhi saum ntawm lub gods nyob rau hauv ancient Egypt.

Renaissance thiab niaj hnub lub sij hawm

Rau centuries, suab los thiab txuas ntxiv mus kawm. Piv txwv li, lub acoustics ua hauj lwm txawm cov neeg pleev kob Leonardo da Vinci. Nyob rau hauv nws sau, nws formulated lub hauv paus ntsiab lus ntawm lub suab tsis muaj kev ywj pheej los ntawm ntau qhov chaw. Tom qab 400 xyoo nyob rau hauv Fabkis nyob rau hauv lub Paris Academy ntawm Sciences Yauxej Saverio luam tawm "Memoirs ntawm acoustics". Ces Newton tau kawm tej hauj lwm ntawm Saverio. Raws li nws cov kev tshawb pom thiab cov lus xaus, tsim muab xam rau ntawm lub acoustic wavelength. Newton tuaj mus rau lub xaus hais tias lub wavelength ntawm lub suab ob zaug kom ntau li ntau raws li ib tug raj ua no suab.

Kev txiav txim ntawm lub suab

Uas hais txog cov suab phenomena? Peb npaj mus rau lub ntsiab txhais ntawm lub sij hawm "suab". Qhov no cov neeg kho tshuab deeg uas propagate nyob rau hauv elastic xov xwm, xws li roj, kua thiab khib nyiab. Tej cov neeg kho tshuab deeg perceive hnov nruab nrog cev, uas yog, peb lub pob ntseg. Ib tug piv txwv yooj yim, uas yuav piav qhia txog lub essence ntawm lub suab yuav tsum yog ib tug hlua ntawm tej suab paj nruas ntsuas. Nws hau deeg puag ncig cua hais. Hloov mus hloov los kis tau deb thiab thaum lawv mus txog lub pob ntseg, lawv ua deeg ntawm lub nruas ntsej. Yog li, peb hnov txawv.

Suab phenomena nyob rau hauv cov xwm

Suab tsis tau tsis tau pom. Txawm li cas los, koj yuav tau xav txog tej yam yuav ua li cas lawv yuav zoo. Ua li no, koj yuav tau mus rau tej lub cev ntawm cov dej. Yog hais tias koj muab pov ib lub pob zeb nyob rau hauv ib lub pas dej los yog pas dej, ces koj yuav pom cov thawj si nraum zoov. Cov dej no ces tsa, thiab yog li tshwm sim nyob rau yoj nto ntawm lub reservoir, uas yog qho alternating troughs thiab crests. Lawv yuav muab faib nyob rau hauv tag nrho cov lus qhia.

Sections nyob rau hauv acoustics

Cov teeb meem ntawm tshwm sim thiab kis, raws li zoo raws li lub suab haum lawm acoustics. Tshaj yav dhau los 10 xyoo, lub cev acoustics qhib suab uas yog tawm ntawm earshot. Lawv cov kev tshawb fawb ultrasonics. Kev Acoustics deals nrog tus dab uas tau txais, kis thiab cov ntaubntawv povthawj siv kev siv hluav taws xob khoom siv. Cov seem tom ntej no kawm cov propagation ntawm lub suab nyob rau hauv lub chav tsev - architectural acoustics. Rau nws yog ib qho tseem ceeb tsis tau tsuas yog rau cov loj thiab zoo ntawm lub chav tsev, qhov chaw uas lub suab yog soj ntsuam, tab sis kuj cov ntaub ntawv uas npog lub phab ntsa thiab qab nthab ntawm lub chav tsev. Suab paj nruas acoustics kawm qhov xwm thiab keeb kwm ntawm cov suab paj nruas suab. Nrog rau lwm cov seem, muaj ib tug marine acoustics (sonar). Nws yog tsim los kawm txog cov suab los nyob rau hauv lub dej ib puag ncig. Sonar yog qhov tseem ceeb rau txoj kev loj hlob, raws li zoo raws li lub creation ntawm lub suab cov khoom uas yuav siv tau nyob rau hauv submarines. Muaj yog ib yam zoo - lub atmospheric acoustics. Nws kawm lub phenomenon ntawm lub suab nyob rau hauv cov cua. Physiological Acoustics yog tus saib xyuas ntawm lub rooj sib hais. Tsaug rau nws peb paub tias cov peev xwm ntawm peb lub cev, lawv lub koom haum thiab kev txiav txim. Qhov no hom ntawm kev kawm ntawv yog kawm cov acoustics hais lus hloov suab. Thiab lub xeem ib tug - nws yog ib tug lom acoustics. Nws chaw nyob tej teeb meem ntawm ultrasonic thiab sonic tsiaj kev sib txuas lus. Nws kuj kawm qhov chaw mechanisms uas siv los ntawm tej tsiaj txhu, nyob rau hauv tas li ntawd, lom acoustics tsim los soj ntsuam qhov teeb meem ntawm cov suab nrov thiab kev co, nws yog tsim nyog los sib ntaus sib tua tiv thaiv teeb meem suab nrov thiab los txhim kho cov ib puag ncig.

Txawv txav tej yam ntuj tso suab phenomena

Nyob rau hauv lub ntiaj teb, nws muaj chaw zoo-paub vim lub phenomenon ntawm buzz. Nws yog piav raws li ib tug qhov thiab tsawg hum. Qhov no suab qhov twg los twb tsis tau tau pom. Talas nyob rau hauv New Mexico muaj xws ib qho txawv txav suab qhov twg los. Nws yog li ntawd no hum yog hnov xwb 2% ntawm cov neeg hauv zos, lawv hais tias lub suab yog tsis tshua muaj disturbing.

Txawv txav tej yam ntuj tso suab phenomena

Ib qho ntawm feem ntxiag suab txiv neej hais tias purring miv. Zaum no tseem kawm no phenomenon. Lub hauv paus chiv keeb ntawm no lub suab tseem tsis tau tsim. Tsis muaj tsawg ceeb nyob rau hauv cov xwm pom tau hais tias yuav heev thiab ntev suab, uas luam tawm cov txiv neej humpback whales. Muaj ntau zaum ntseeg hais tias nws yog tsim nyog los nyiam poj niam, tab sis tsis ntev los no kev tshawb fawb tau qhia tias lub suab yog tsis attracting cov maum thiab txiv neej.

Nyob rau hauv cov xwm, muaj yog ib tug loj tus naj npawb ntawm cov suab. Peb hnov xob quaj. Lub caij ntuj no nyob rau hauv peb ob txhais taw crunching daus. Yog hais tias koj quaj qw nyob rau hauv lub hav zoov, peb hnov ncha. Nws, dhau lawm, yog ib qho piv txwv ntawm lub suab phenomena nyob rau hauv cov xwm.

Yog li, peb tau kawm kev piv txwv ntawm lub suab phenomena nyob rau hauv physics thiab cov xwm. Tam sim no tsis muaj leej twg ntawm kev soj ntsuam kuaj cov hauj lwm koj tsis ntshai.