2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Cov Npanpiloo thaum ub suav thaj tsam ntawm ib lub voj voog los ntawm kev noj 3 npaug ntawm lub vojvoog ntawm nws lub vojvoog, uas muab tus nqi ntawm pi=3. … Thawj qhov kev suav ntawm π yog ua los ntawm Archimedes ntawm Syracuse(287–212 BC), yog ib tus kws lej loj tshaj plaws hauv ntiaj teb thaum ub.
Archimedes nrhiav tau pi li cas?
Archimedes 'txoj kev pom qhov kwv yees ntawm pi los ntawm kev txiav txim siab qhov ntev ntawm ib puag ncig ntawm lub voj voog ntawm lub voj voog (uas yog tsawg dua qhov ncig ntawm lub voj voog) thiab thaj tsam ntawm ib lub voj voog ncig. sab nraum lub voj voog (uas loj dua qhov ncig).
Leej twg nrhiav tau pi thawj zaug?
Nws tsis yog txog rau xyoo pua 18th - txog li ob txhiab xyoo tom qab qhov tseem ceeb ntawm tus lej 3.14 yog thawj zaug suav los ntawm Archimedes - lub npe "pi" yog thawj zaug siv los qhia tus lej. Hauv lwm lo lus, tsab ntawv Greek siv los sawv cev lub tswv yim tsis tau xaiv los ntawm cov neeg Greek thaum ub uas pom nws.
pib yog dab tsi thiab nws pib li cas?
Thawj sau tseg siv π raws li lub cim lej los los ntawm tus kws lej Welsh William Jones hauv 1706 ua haujlwm hu ua Synopsis Palmariorum Matheseos, uas nws sau cov lus Greek περιϕέρεια, (lub ntsiab lus "circumference," lossis "periphery") rau nws thawj tsab ntawv: π.
Puas puas yuav xaus?
Ua tus lej tsis sib haum, π tsis tuaj yeem qhia ua feem ntau, txawm hais tias feem ntau xws li 227 yogfeem ntau siv los kwv yees nws. Sib npaug, nws tus lej lej tsis tas yuav xausthiab yeej tsis nyob rau hauv tus qauv rov qab mus tas li.
Pom zoo:
Lub sijhawm nws tshawb nrhiav zebulon pike nrhiav?
Zebulon Pike yog ib tug tub rog Asmeskas tub rog thiab tshawb nrhiav uas tau ua haujlwm hauv Tsov Rog xyoo 1812. Thaum nws ntoj ncig, nws tau sim tshawb nrhiav qhov chaw ntawm Mississippi River. Nws txoj kev ntoj ncig pib thaum General James Wilkinson hauv 1805 txiav txim siab xa nws mus nrhiav qhov chaw ntawm tus dej.
Thaum twg tau txais kev pom zoo nrhiav tau?
In 2009, peb tus tsim thiab CEO Steve Marshall tau txheeb xyuas lub sijhawm hauv kev lag luam pov hwm lub neej thiab Reassured tau tsim. Peb pab tsev neeg tiv thaiv qhov tseem ceeb tshaj plaws rau lawv; Peb Lub Hom Phiaj rau 2020 yog los tiv thaiv ntau dua 200,000 tsev neeg hauv tebchaws Askiv.
Tus neeg nrhiav qhov tseeb puas ceeb toom rau tus neeg koj tab tom nrhiav?
Puas yog TruthFinder ceeb toom rau tus neeg koj saib? Koj qhov kev tshawb nrhiav TruthFinder ib txwm yog ntiag tug, yog li tus neeg nug yuav tsis paub tias koj tshawb nrhiav lawv daim ntawv tshaj tawm. Yog TruthFinder tsis qhia npe? rub daim ntawv tshaj tawm ntawm TruthFinder tsis qhia npe, yog li tsis muaj leej twg yuav raug ceeb toom thaum koj ua qhov kev tshawb nrhiav lossis thov daim ntawv qhia rau ib tus neeg tshwj xeeb.
Kuv nrhiav tau daim ntawv xav tau suab nyob qhov twg?
Nrhiav koj cov npe xav tau ntawm lub desktop version ntawm Audible yog qhov yooj yim: Saib cov ntawv qhia zaub mov saum toj kawg nkaus ntawm nplooj ntawv thaum mus saib Audible.com ntawm Mac lossis PC. Koj yuav pom "Xaiv Daim Ntawv"
Puas nrhiav tau lossis nrhiav tau?
Yog li, koj yuav tsum tau siv "could find". Lub modal verb, tau yog twb nyob rau hauv nws paste-form: ua. Yog li koj tsis tas yuav hloov pauv los nrhiav. Yuav nrhiav tau lossis nrhiav tau? "Ntaus" yog sib npaug. "
