Cov tsom iav yog ib qho yooj yim siv, pheej yig thiab qee zaum muaj khoom siv dawb uas ua rau muaj kev saib xyuas thiab ua rau koj pom ntau dua ntawm txoj kev thaum hmo ntuj thiab tsis pom kev zoo.
Qhov yooj yim muab, nws yog qee qhov chaw ua rau pom teeb. Piv txwv, taws teeb, ntog rau nws, tsis dhau ntawm thiab tsis nqus, tab sis thim rov qab rau ntawm qhov. Muaj ntau hom qee qhov kev tsom xam - cov no yog cov ntawv nplaum, cim npe, qhwv caj dab, caj npab ntawm caj dab, cov nplhaib tseem ceeb, pob, txiav. Lawv tseem siv nyob rau hauv cov phiajcim thiab cov cim kev hauv kev kom lawv pom ntau dua.
Muaj ob hom kev tsom iav - raws li microprisms thiab raws cov iav microspheres. Peb yuav tsis delve rau hauv lawv cov qauv. Qhov tseem ceeb tshaj plaws, ob qho tib si cia koj ua cov khoom ua kom pom ntawm qhov deb ntawm 150 meters lossis ntau dua.
Qhov ntsuas qhov pom yog qhov tsis yooj yim rau cov neeg siv txoj kev. Tom qab tag nrho, txawm tias cov neeg ua tib zoo mloog tshaj plaws hauv lub tsheb yuav tsis pom kev txav ntawm cov neeg taug kev ntawm txoj kev tsis zoo. Nws pom tsuas yog thaj chaw uas taws teeb ntawm lub teeb cig pom kev. Tus neeg tsav tsheb xav tau sijhawm los ua haujlwm rau qhov xwm txheej sai thiab txiav txim siab. Zoo, yog tias qhov nrawm yog 40 km / teev thaum tsav tsheb, thiab nws tuaj yeem nres thiab nres tom qab 10 metres, thiab yog tias qhov nrawm dua, hais 80 km / teev, ces qhov kev sib txawv pib nce ntau zaus thiab yog 60 mev.
Nws tsis yog txhua qhov nyuaj los hnav nws rau ntawm cov khaub ncaws lossis khoom, nws pheej yig, tab sis nws tuaj yeem cawm ib tus neeg qhov khoom tseem ceeb tshaj plaws uas nws muaj - kev noj qab haus huv lossis lub neej.
Rau ntawm tus menyuam, kev xav txog cov khoom yuav tsum tau muab tso rau sab saum toj ntawm lub tes tsho lossis hnab ev ntawv, zoo li ntawm taub hau. Siv daim kab xev kev pleev xim kom ua rau tus thawb lossis swb qis dua kom pom kev ntawm txoj kev. Pecked nws nyob rau ob sab thiab rov qab. Ntawm lub tsheb kauj vab, nws tau thov rau tus ncej thiab pob tw. Nco ntsoov tias, qhov pom ntau dua muaj, pom ntau tus neeg lossis khoom yog ntawm txoj kev.
Lub tsom iav yog qhov kev lees paub ntawm kev ruaj ntseg ntawm cov neeg taug kev hmo ntuj thiab pom kev tsis zoo.
