Ntau npaum li cas A4 daim ntawv hnyav, nws qhov ntev

Cov txheej txheem:

Ntau npaum li cas A4 daim ntawv hnyav, nws qhov ntev
Ntau npaum li cas A4 daim ntawv hnyav, nws qhov ntev
Anonim

Siv cov ntawv hauv ntau hom rau cov neeg nyob hauv lub xyoo pua 21st zoo li sawv txhua hnub thiab txhuam koj cov hniav. Tsawg tus neeg paub tias thaum pib ntawm lub xyoo pua 20th tsis muaj cov qauv rau ib daim ntawv yuav tsum yog rau kev sau ntawv, tshuaj xyuas, lossis khaws phau ntawv xwb.

A4 daim ntawv keeb kwm

Nyob rau hauv lub xyoo pua nees nkaum, hom ntawv ntawm cov ntawv uas tau siv rau kev ua haujlwm tau xaiv los ntawm txhua lub tuam txhab, lub Hoobkas lossis lwm yam kev tsim khoom rau nws tus kheej. Cov neeg muaj tswv yim nyob rau lub sijhawm ntawd nyiam ua haujlwm nrog ntawv, uas muaj lub npe "Golden Section".

Daim ntawv piv ntawm kab no yog 1: 1, 168. Txawm li cas los xij, nws tsis haum rau lwm cov lag luam. Thawj zaug tshaj tawm ib tus qauv rau hom ntawv ntawm nplooj ntawv yog German W alter Portsmann. Nws muab txoj sia rau cov ntawv uas nws qhov sib piv yog 1: 1, 414, thiab tag nrho cheeb tsam ntawm daim ntawv yog ib square meter.

A4 daim ntawv loj

Daim ntawv A4 hnyav npaum li cas thiab nws loj npaum li cas, tsis yog txhua tus neeg siv cov ntawv no paub. Cov ntawv ntawm hom ntawv no muaj qhov loj tib yam. Nws yog ib lub kaum rau ntawm ib square meter. Cov kab pheeb ces kaum ntawm A4 daim ntawv yog 364 hli.

A4 hom ntawv
A4 hom ntawv

Daim ntawv no tau los ntawm folding A0 daim ntawv hauv ib nrab. Los ntawm txoj kev, hnub no A0 yuav luag tsis nco qab lawm. Qee zaus nws yog siv rau phab ntsa ntawv xov xwm hauv tsev kawm ntawv lossis kindergartens.

Yog li ntawv A4 hnyav npaum li cas?

Nws yuav zoo li tias tau txais cov lus teb rau lo lus nug no yooj yim heev - muab daim ntawv rau ntawm qhov ntsuas thiab koj paub cov lus teb. Txawm li cas los xij, tsis yog txhua qhov teev muaj peev xwm nthuav tawm qhov hnyav rau qhov ze tshaj 0.01g. Ntau tus neeg uas xav tias lawv tus kheej muaj peev xwm muab ib pob ntawv rau ntawm qhov ntsuas thiab ntsuas nws, muab faib los ntawm cov nplooj ntawv thiab xav tias lawv yuav tau txais cov lus teb raug..

A4 daim ntawv
A4 daim ntawv

Txawm li cas los xij, koj yuav tsum coj mus rau hauv tus account qhov hnyav ntawm pob nws tus kheej. Yog li ntawd, nyob rau hauv rooj plaub no, koj yuav tsum tau nqa cov nplooj ntawv yam tsis tau qhwv, thiab cov lus teb yuav raug ntau dua.

Thaum ntsuas qhov ntsuas qhov tseeb dua txhawm rau txhawm rau paub tias A4 daim ntawv hnyav npaum li cas, nws tau pom tias nws qhov hnyav yog 4.9 g. Yog li, ib pob ntawm cov nplooj ntawv hauv qhov nyiaj ntawm 1000 daim ntawv yuav hnyav 4.9 kg.. Qee qhov chaw hais tias qhov hnyav ntawm A4 daim ntawv yog 5 g. Nws yog ib qho tseem ceeb uas yuav tsum tau coj mus rau hauv tus account qhov tseeb tias cov ntawv A4 tuaj yeem muaj qhov sib txawv. Qhov hnyav 4.9g muaj tus qauv A4 nrog qhov ceev ntawm 80g ib square meter.

Keeb kwm ntawm no invention ntawm noob neej tsis tau kawm kom meej. Vim hais tias nyob rau hauv lub ntiaj teb no niaj hnub no, ob peb tus neeg delve rau hauv xws li cov ntsiab lus thiab lub sij hawm. Peb feem coob coj txhua yam kom pom zoo, thiab qee zaum txawm tsis saib xyuas tib neeg kev ua tiav, thaum lwm tus neeg nyob hauv lub tebchaws txom nyem tseem tsis tau paub txog qee qhov txiaj ntsig ntawm kev vam meej.

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