Nyob rau xyoo 19th, lub tsheb log tsheb tau yug los rau lub sijhawm ntawd. Nws hais rau qhov xwm ntawm roj hmab-dawb; ib qho xim ib txwm tsis tuaj yeem txaus siab rau ntau hom kev nrhiav ntawm cov tswv tsheb. Peb pib ntxiv ntau yam xim sib txawv rau cov log tsheb, thiab cov xim ntawm cov log tsheb pib. Cov kev hloov pauv tau ua raws; Xyoo 1915, cov khoom siv roj carbon dub tau ntxiv rau hauv cov log tsheb, peb mam li nco dheev pom tias tom qab kev koom tes ntawm cov pa roj carbon dub, qhov hnav tsis kam ntawm cov log tsheb yog 4-5 npaug ntawm cov log tsheb dawb; ces cov log tsheb dub pib npog. Tus editor ntawm daim ntawv teev cov nqi log tsheb qhia koj vim li cas nws yog xim dub? Tej zaum koj kuj xav tias vim li cas cov xim ntawm lub log tsheb tsuas yog dub?' tsis yog dawb, liab, lossis zaj sawv? Qhov tseeb, lo lus nug no muaj ntau tshaj li ib puas xyoo dhau los Qee cov neeg tau xav txog nws thiab siv zog ua haujlwm, thiab qhov tshwm sim yog tias peb coincidentally xaiv dub.
Keeb kwm ntawm lub log tsheb discoloration: los ntawm cov yeeb yuj mus rau dub
Nyob rau hauv lub xyoo pua kaum cuaj, lub tsheb log tsheb tau yug los. Nws hais rau qhov xwm ntawm roj hmab-dawb; ib qho xim ib txwm tsis tuaj yeem txaus siab rau ntau hom kev nrhiav ntawm cov tswv tsheb. Peb pib ntxiv ntau yam xim sib txawv thiab cov xim log tsheb rau cov log tsheb. Qhov pib hloov tau; Xyoo 1915, cov khoom siv carbon dub tau ntxiv rau cov log tsheb, peb mam li nco dheev pom tias qhov hnav tsis kam ntawm cov log tsheb tom qab kev koom tes ntawm carbon dub yog 4-5 npaug ntawm cov log tsheb dawb; ces cov log tsheb dub pib.
Muaj yeeb yuj counterattack: kev sim txuas ntxiv nrog pib thiab xaus
Nyob rau xyoo 1950, txhawm rau ua kom lawv lub meej mom thiab muaj koob meej, cov neeg nplua nuj thiab muaj hwj chim ib zaug ntxiv lawv qhov muag ntawm lub log tsheb. Lub sijhawm no ncaj qha, lawv siv cov xim ntxhib los txhuam cov log tsheb, ntxuav thiab txhuam, thiab cov xim tuaj yeem txhuam tawm. Tam sim no! XX xim qw"rewrite hnub" txhua hnub, twv kom muaj tswv yim los ntawm cov log tsheb ntxuav hauv ib puas xyoo dhau los? Tab sis qhov zoo ntawm qhov project no yog ib qho yooj yim los ua tsis tiav, thiab tom qab lub sij hawm ntev, cov xim yog ib qho yooj yim mus poob thiab spotty Nws yog unsightly heev, thiab cov qauv no tau maj mam tso tseg. Hauv xyoo 1960, cov log tsheb dawb tau rov qab los. Txawm hais tias kev txhim kho tau tsim, lawv cov dej num tsis tau zoo heev. Ntawm qhov tsis sib xws, tus nqi nce siab. Dab tsi yog qhov tsis txaus ntseeg yog tias tom qab lub sijhawm ntev, cov xim ntawm cov log tsheb dawb ua xim av thiab daj, yog li lawv maj mam poob.
Tom qab ntawd, nyob rau xyoo 1980, cov log tsheb nrog cov ntawv dawb lossis cov hlua dawb sab hauv tau tshwm sim hauv lub tebchaws vam meej, thiab qee lub tuam txhab txawm tsim cov log tsheb pob tshab, tab sis lawv muaj lub ntsiab lus me ntsis. Nrog rau kev vam meej thev naus laus zis, silicon dioxide tau hloov cov pa roj carbon dub, thiab cov log tsheb muaj yeeb yuj tau rov ua dua tshiab. Lub sij hawm no cov kev txawj ntse yog ntau sophisticated, tab sis kev ua lag luam txais tseem tsis siab.
& quot;Sexy" lure yog invalid, rov qab mus rau qhov qub
Tom qab ob centuries ntawm" xim" kev ntxias, tom qab" deviant" fruitless, peb tau maj accustomed rau dub, tsis txhob xav tias nws yog li dazzling, cov neeg siab tsis siv cov xim ntawm log tsheb los txhawb tus kheej. Dub tseem yog kev tswj hwm ntawm kev lag luam log tsheb, tab sis tib lub sijhawm, thev naus laus zis kuj tseem muab cov log tsheb ntau xim, tsuas yog ua kom zoo nkauj thiab zam lub neej.