Ostriches yog ib qho ntawm cov noog tshwj xeeb tshaj plaws hauv lub nceeg vaj tsiaj. Lawv tuaj yeem loj hlob mus rau ntau dua yim taw hauv qhov siab thiab ncav cuag qhov nrawm dua 43 mph (70 kph). Lawv ob txhais ceg muaj zog tsis yog pab lawv khiav tawm ntawm lawv cov tsiaj nyeg, tab sis lawv ua riam phom tiv thaiv tus kheej, thiab. Ostriches yuav ncaws lawv cov tsiaj qus kom nws tua tau lawv.
Tab sis ostriches tsis yog cia siab rau lawv cov ceev ceev thiab muaj zog ob txhais ceg kom lawv ciaj sia nyob rau hauv lub ntsej muag ntawm kev txaus ntshai. Lawv qhov kev hnov mob hnyav pab lawv hnov cov tsiaj nyeg tuaj ua ntej nws lig dhau los khiav ntawm lawv. Yog li, yog tias koj puas tau xav tias ostriches muaj pob ntseg, yog, lawv ua, thiab cov pob ntseg yog qhov tseem ceeb rau cov noog uas tsis muaj sia nyob.
Cia li nyeem ntawv kom paub txhua yam koj xav paub txog ostriches thiab lwm yam noog lub peev xwm hnov lus.
Do Ostriches Have Ears?
Ostriches muaj qhov muag pom thiab hnov los pab lawv paub cov tsiaj txhu nyob ze. Lawv pob ntseg nyob ntawm ob sab ntawm lawv lub taub hau, ib yam li peb. Nws nyuaj rau pom noog pob ntseg vim lawv tsis muaj pob ntseg sab nraud xws li tib neeg, dev, lossis lwm tus tswv cuab ntawm lub nceeg vaj tsiaj. Cov plaub ntawm cov noog taub hau feem ntau npog lawv pob ntseg kom zoo li lawv tsis muaj dab tsi hlo li. Nyob rau hauv cov ntaub ntawv ntawm ostriches, txawm li cas los, lawv lub taub hau feathers me me uas koj yuav pom qhov twg lawv pob ntseg.
Cov noog hnov li cas tsis muaj pob ntseg?
Nyob rau hauv cov tsiaj nyeg feem ntau, cov qauv ntawm pob ntseg sab nraud pab kom funnel hauv suab. Qhov no yog qhov tseem ceeb rau cov tsiaj los txiav txim seb lub suab tuaj ntawm qhov twg. Txawm hais tias cov noog tsis muaj cov qauv sab nraud, lawv tseem tuaj yeem nrhiav tau qhov twg lub suab tuaj. Txog thaum tsis ntev los no, nws tau ntseeg tias qhov tsis muaj pob ntseg sab nraud txhais tau tias cov noog tsis tuaj yeem sib txawv ntawm cov suab los ntawm qhov siab sib txawv.
Cov kev tshawb fawb tsis ntev los no qhia tias cov duab ntawm tus noog lub taub hau ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab qhov chaw suab. Txoj kev tshawb no tau ua tiav ntawm crows, ducks, thiab qaib thiab pom tias cov duab oval ntawm cov noog lub taub hau tau pab hloov cov suab nthwv dej zoo ib yam li cov tsiaj nyeg pob ntseg sab nraud.
Nyob ntawm qhov twg lub suab nthwv dej ntaus tus noog lub taub hau, lub suab yog absorbed, reflected, los yog disfracted. Qee lub suab yuav dhau los ntawm lub taub hau kom ua rau cov lus teb rau ntawm pob ntseg.
Cov noog tuaj yeem hnov zoo li cas yam tsis muaj pob ntseg sab nraud?
Txawm hais tias tsis muaj lub pob ntseg sab nraud zoo li lwm hom tsiaj hauv lub nceeg vaj, cov noog tau hnov zoo. Nws yog lawv qhov kev xav thib ob tseem ceeb tshaj tom qab pom.
Kev hnov lus tau hloov zuj zus mus ua haujlwm zoo raws li lawv xav tau kev sib txuas lus nrog ib leeg los ntawm cov nkauj. Qee hom noog, zoo li ostriches, tso siab rau lawv lub rooj sib hais los khaws cov kev hem thawj ntawm kev phom sij.
Avian hnov rhiab rau lub suab ntawm 1 txog 4 kHz, txawm hais tias lawv tuaj yeem hnov qee qhov qis dua thiab siab dua.
Puas muaj lwm yam tsiaj tsis muaj pob ntseg?
Yog, muaj ntau ntau yam tsiaj uas tsis muaj "pinna" (qhov pom ntawm pob ntseg sab nraum lub taub hau).
Salamanders tsis muaj pob ntseg, yog li lawv siv cov av vibrations tshaj cov suab hauv huab cua kom "hnov." Nab kuj siv av vibrations hnov suab.
Qab muaj pob ntseg thiab pob ntseg uas tso cai rau lawv hnov txog 38 kHz, qhov siab tshaj ntawm lwm yam amphibian. Rau kev sib piv, tib neeg tuaj yeem hnov suab txog 20 kHz.
Kab laug sab tsis muaj pob ntseg lossis pob ntseg, yog li koj yuav xav tias lawv hnov tsis tau. Kab laug sab yeej "hnov " (kev vibrations) ua tsaug rau cov plaub hau me me ntawm lawv lub forelegs.
Harp cov ntsaws ruaj ruaj yuav tsis muaj lub pob ntseg sab nrauv, tab sis lawv cov pob ntseg sab hauv zoo ib yam li lawv cov tsiaj txhu. Qhov tsis muaj pinna ua rau lub hom phiaj hauv hom no vim nws tso cai rau lawv txiav txim siab qhov kev coj ntawm lub suab uas lawv hnov. Lawv lub rooj sib hais tshwj xeeb yog tsim los rau underwater acoustics (1-180 kHz), thiab lawv lub peev xwm hnov tau txo qis thaum lawv tsis nyob hauv dej (1-22.5 kHz).
Cov noog puas tuaj yeem lag ntseg?
Cov noog tsis tuaj yeem lag ntseg mus tas li zoo li tib neeg. Lawv tuaj yeem poob lawv qhov hnov qab vim lub suab nrov lossis raug mob, tab sis qhov tsis hnov lus tsuas yog ib ntus xwb. Cov hlwb puas hlwb hauv pob ntseg ntawm cov noog tuaj yeem loj hlob rov qab los kho lawv qhov kev hnov lus zoo li qub.
Txawm li cas los xij, tsis zoo li tib neeg thiab lwm yam tsiaj, cov noog yuav khaws tau lawv lub suab tag nrho lawv lub neej. Thaum tib neeg muaj hnub nyoog 65 xyoos, lawv tuaj yeem poob ntau dua 30 decibels ntawm rhiab heev ntawm cov zaus. Kev hnov lus hauv tib neeg yog maj mam pib thiab pib nrog lub suab nrov zoo li cov xov tooj nrov lossis microwaves beeping.
Txoj Kev Xav
Peb vam tias koj tau kawm ib yam tshiab txog lub peev xwm hnov lus ntawm ostriches thiab lwm hom noog hnub no. Txawm hais tias feem coob tsis pom lawv tus kheej xav paub noog pob ntseg, nws yeej tsis mob siab qhia koj tus kheej ntxiv txog cov tsiaj uas peb qhia lub ntiaj teb zoo nkauj no nrog.
