Thaum twg cov burettes tau tsim?

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Thaum twg cov burettes tau tsim?
Thaum twg cov burettes tau tsim?

Video: Thaum twg cov burettes tau tsim?

Video: Thaum twg cov burettes tau tsim?
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History. Thawj burette tau tsim nyob rau hauv 1845los ntawm Fabkis kws tshuaj Étienne Ossian Henry (1798–1873). Xyoo 1855, German chemist Karl Friedrich Mohr (1806–1879) tau nthuav tawm ib qho kev txhim kho ntawm Henry's burette, muaj kev kawm tiav nyob rau hauv lub raj ntawm lub burette.

Leej twg tsim thawj burette hauv 1791?

History. Francois Antoine Henri Descroizilles tsim thawj burette rau xyoo 1791. Joseph Louis Gay-Lussac tau tsim ib lub burette ntau dua tom qab.

hnub nyoog pes tsawg tus burette?

thawj burettes yog tsim los ntawm chemists nyob rau hauv lub 19th caug xyoo. Lawv muaj cov iav raj yooj yim nrog li qub thiab tom qab ntawd ntxiv kev kawm tiav. Qhov kev tsim qauv yooj yim no tseem siv dav.

Vim li cas Burets yog qhov tseeb?

Burettes loj dua lub pipette, nws muaj qhov nres nres rau hauv qab kom tswj tau cov kua tso tawm. Burette zoo ib yam li kawm tiav lub tog raj kheej thiab yooj yim dua los ntsuas qhov xav tau ntim ntawm cov kua los ntawm kev kawm tiav. Tab sis, nws muaj meniscus lojthiab yog li nws qhov tseeb thiab qhov tseeb tsawg dua hauv kev ntsuas cov kua.

Leej twg tsim lub burette clamp?

Lub burette, ib qho tseem ceeb ntawm cov cuab yeej ntim, tau tsim los ntawm Karl Friedrich Mohr qhov chaw nyob ib ncig ntawm nruab nrab ntawm 19th xyoo pua.

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