Ib tug ntawm cov yooj yim ntoo - balsa ntoo

Tsob ntoo Tsob ntoo strife - thiab tsis yog los ntawm lawv cov tsos (txiv hmab txiv ntoo thiab nplooj), tab sis kuj nyob rau hauv cov ntoo qauv. Feem ntau cov feem ntau ntsib kev txiav txim dab tsi greenery tswv yim thiab check, nws yog tsim nyog los builders. Oak planks, ntoo thuv, linden - tag nrho cov ntoo yog zoo paub rau peb. Tab sis nyob rau hauv teb chaws sov America, feem ntau nrov balsa. Nws yog ib lub lightest ntoo nyob rau hauv lub ntiaj teb no.

balsa ntoo

Bals - deciduous ntoo los ntawm teb chaws sov America. Nws muaj ib tug heev zoo nkauj xim ntawm cov ntoo. Nws yog yuav luag dawb, nrog yellowish los yog pinkish zas. Balsa yog xav tau lub lightest ntoo nyob rau hauv lub ntiaj teb no, vim hais tias nws ceev yog tsawg tshaj li ntawm 160 kilograms ib cubic Meter. Kev sib piv: cov kev ceev ntawm ntoo thuv - 520, ntoo qhib - 760, linden - 550.

Lwm zoo kawg li feature ntawm no tsob ntoo, thaum nws tsuas txiav down, cov ntoo muaj 90 feem pua ya raws. Dej dries sai sai nyob rau hauv lub hnub thiab lub cua, tab sis lub cev thiab ceg tsis tig mus rau hmoov av (raws li, piv txwv li, lub baobab tsob ntoo), tab sis nyob rau hauv tsis tooj - yog muaj qhov tsim nyog lub dag lub zog. Qhov no tej khoom vaj tse ua rau cov balsa ntoo txaus nyiam kom muaj daim ntawv sau npe. Ntaub ntawv los ntawm nws luj me ntsis thiab muaj zoo acoustic thiab kev co-damping zog.

Uas feem ntau ntawm cov ntaub ntawv siv balsa?

Yuav ua li cas yog balsa ntoo, peb tau rov los xyuas dua. Tam sim no peb nrhiav tau tawm qhov twg lub feem ntau siv cov ntaub ntawv no yog ua los ntawm nws. Great chaw enjoyed los ntawm balsa qauv dav hlau. Thiab qhov no yog to taub. Txawm tias thaum piv nrog rau cov pa roj carbon fiber balsa, tsob ntoo muaj txiaj ntsim xwb. Nws yog heev yooj yim mus lis, nws nqi yog tsis tshua muaj tsis tshua muaj. Thiab txawm balsa muaj zoo heev maintainability.

Yog hais tias raug rau pom ntoo, nws yog glued, nws yuav kav rau ntau xyoo, tshuav raws li muaj zog thiab txhim khu kev qha raws li thaum lub sij hawm ntawm tej. Interestingly, tus mob stroke thaum lub load absorbed los ntawm cov khoom nws tus kheej. Nws tseem yog ib qho tseem ceeb heev nyob rau hauv aeromodelling. Txawv ntawm tsob ntoo ntawd ua nuv ntses tackles. balsa tsob ntoo yog feem ntau siv rau qhov siv thiab ua cov dej-txuag cov khoom siv.

Chaw yug ntawm balsa ntoo

Raws li peb tau kawm, balsa muaj ib tug yawm thov nyob rau hauv kev ua lag luam. Tam sim no lub sij hawm tau tuaj mus nrhiav qhov twg nws tuaj ntawm. Qhov twg loj hlob balsa ntoo? Lub birthplace ntawm no cim tsob ntoo yog pom tias yuav ua tau lub equatorial ib feem ntawm South America. Balsa yuav pom nyob rau hauv Indonesia, Brazil, Thaib teb, Colombia, Peru, Mexico thiab ntau lwm lub teb chaws. Txawm li cas los, cov hlau lead hauv daim ntawv no yog Ecuador - nws yog suav tias yog lub ntsiab tsum balsa ntoo (95% tag nrho).

Turnover ntawm qhov muag coj ib tug ntau ntawm cov nyiaj. Ntoo ntaub ntawv no yog yuav zoo li siv lub npe, thiab neeg mus ncig tebchaws cov khw. Lawv yog ua los ntawm balsa txhua yam ua tau - los ntawm tej yam yooj yim thiab kav ntev souvenir mus rau feem ntau cov kev surfboard.

Kev loj hlob thiab flowering

Nws tseem yog noteworthy tias cov balsa - ceev-loj hlob ntoo. Tsuas yog 10, tej zaum 15 xyoo, balsa tsob ntoo loj hlob tuaj mus rau 30 meters nyob rau hauv qhov siab. Lub neej expectancy ntawm ntsuab tej qhov chaw - yog tsis ntau tshaj li 30 los yog 40 xyoo. Balsa yog zoo nkauj heev nyob rau hauv tawg - tus thawj buds tshwm nyob rau hauv nws yog tsuas yog tom qab peb xyoos ntawm lub neej. Qhov no feem ntau tshwm sim tom qab lub caij los nag, thaum cov ntoo yog muaj txaus noo noo.

Tsis zoo li ntau yam nroj tsuag, tsob ntoo no paj pib qhib lub tej nplaim nyob rau hauv lub caij tav su. Qhuas cov buds nkaus nthuav tawm thaum hmo ntuj - nyob rau hauv thaum sawv ntxov lawv yuav raug kaw dua. Nws yog nyob rau hauv qhov tsaus ntuj nti thiab pollination yuav siv sij hawm qhov chaw - cov kab yog twv rau Library qab zib tsw. Feem ntau cov feem ntau nqa paj ntoos puav Olinga, kinkajou. Hnub pollination yuav tshwm sim siv liab. Kov lub buds, lawv willy nilly-, lawv khob tawm lub paj ntoos.

Daim ntawv thov rau cov ua liaj ua teb

Balsa ntoo yog dav siv nyob rau hauv kev khwv nyiaj txiag. Kov nws yooj yim heev. Ua li no, cia li xav mus nyias hniav nrog ib tug me me npoo kaum sab xis. Tab sis lub coloring ntawm balsa suab tsis muab nyob rau hauv - zoo siv dej xim, uas sai sai tsau rau hauv cov ntoo. Tab sis lacquers thiab oily tshuaj nws yog zoo dua tsis siv. Nyob twj ywm rau wood, lawv yuav tsis tau.

Yus zoo balsa sussed ntau ancient Incas. Lawv pib vystrugivat ntoo nkoj thiab ua lub teeb thiab resistant rafts. Ntoo yog pom tias yuav zoo tagnrho rau qhov siv thiab ua txhuam rau calligraphy. Tab sis nyob rau hauv shipbuilding balsa ntoo siv rau kev tsim kho ntawm decks thiab sab rau me me Library tej nkoj nquam (feem ntau tsis tau siab tshaj 30 meters nyob rau hauv ntev, qhov loj ntawm ib tug neeg laus tsob ntoo). Balsa ntawv thov thiab rau qhov siv thiab ua tuaj rau cua turbines. Tej zaum, nws yog ib qhov nyuaj rau xav txog tej yam ib tug xav paub ntau yooj yim thiab yooj yim os.

nthuav lus tseeb

Hare wool los yog ntoo, paj rwb - nws yog balsa ntoo, muab qhia tawm uas yuav tsis tiav yam tsis muaj mention ntawm lub txiv hmab txiv ntoo. Ua tsaug rau lawv, nws tau txais xws li ib tug funny lub npe. Txiv hmab txiv ntoo ntawm balsa - thawv ntawm 30-centimeter ntev. Hauv no muaj ntau ntau reddish ntaug fibers uas yog thaum cov noob. Thaum muaj ib tug maturing, thawv tawg thiab khav theeb lawv "insides". Ntxuav txiv hmab txiv ntoo yog heev uas zoo sib xws rau luav tus taw los yog sov woolen plaid daim. Li no, xws ib qho kev nthuav lub npe.

Nws yog noteworthy uas xyoo ua ntej lawm Balso thiab paj rwb ntawm tib hom. Ib tug cav ntawm ntoo yuav yooj yim nqa ib tug neeg. Los ntawm txoj kev, tsob ntoo tsis muaj txoj kev loj hlob rings vim hais tias loj hlob tsis tu ncua. Thiab ntxiv dua, nws yog los ntawm tsob ntoo no twb ua los ntawm cov legendary "Kon-Tiki", lub nkoj traveler thiab archaeologist Thor Heyerdahl. Thiab kev sib piv, balsa ntoo yog sib zog tshaj lwm yam ntoo rau 7 lub sij hawm sib zog tshaj dej - 9.