Video: Joseph Priestley sim ua dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Discovery ntawm Oxygen
Pov thawj nkag mus rau hauv kev pabcuam ntawm Earl ntawm Shelburne hauv 1773 thiab nws yog thaum nws nyob hauv qhov kev pabcuam no uas nws pom oxygen. Nyob rau hauv ib tug classic series ntawm kev sim Nws siv nws 12 nti "hlawv lens" los ua kom sov mercuric oxide thiab pom tias cov pa roj zoo tshaj plaws tau tawm mus.
Kuj nug tias, Yauxej Povthawj xav paub dabtsi?
Laboratory khoom siv los ntawm Pov thawj hauv tus 1700s ib. Lub Yim Hli 1, 1774, Pov thawj ua nws qhov kev sim nto moo tshaj plaws. Pov thawj hu nws qhov kev tshawb pom "dephlogisticated huab cua" rau tus txoj kev xav tias nws txhawb combustion zoo heev vim nws tsis muaj phlogiston nyob rau hauv nws. Yog li nws tuaj yeem nqus tau tus qhov siab tshaj plaws thaum hlawv.
Joseph Priestley tuag li cas? Cov Tuag ntawm Joseph Priestley . Cov txiv plig thiab kws tshuaj Joseph Priestley tuag Lub Ob Hlis 6, 1804, hnub nyoog xya caum-ib. Ntawm qhov tsis sib xws, Priestley cov radical views ntawm kev ntseeg thiab kev nom kev tswv tau ua rau Askiv kub rau nws.
Yog li ntawd, Priestley paub tias nws nrhiav tau oxygen li cas?
Priestley yog ib tug thawj kws tshawb fawb uas nrhiav pom oxygen . Xyoo 1774, nws npaj oxygen los ntawm cua sov mercury oxide nrog lub iav kub. Nws pom tias ua pa oxygen tsis yaj nyob rau hauv dej thiab nws ua kom combustion muaj zog. Priestley yog ib tug ruaj ntseeg ntawm phlogiston txoj kev xav.
Joseph Priestley qhov kev pab cuam rau kev tshawb fawb yog dab tsi?
Nws tau paub ntau tshaj plaws rau nws qhov kev tshawb pom ntawm oxygen, tab sis tau ua ntau yam ntxiv. Priestley cov thaum yau tau ua rau muaj kev poob siab, tab sis txawm tias nws txoj kev kawm tawg thiab kev kawm txawv txawv, nws tau ua rau muaj kev ntxhov siab kev kawm . Nws lub ntsiab kev pab yog qhov nrhiav tau ntawm ntau tshaj yim gases, carbonated dej, thiab mem hluav eraser.
Pom zoo:
Dab tsi tshwm sim ntawm Theodor Engelmann qhov kev sim nto moo qhia rau nws uas wavelength S yog tus tsav tsheb zoo tshaj plaws ntawm photosynthesis?
Cov kab mob sib sau ua ke ntau tshaj plaws nyob ze ntawm ib feem ntawm cov alga uas tau nthuav tawm cov xim liab thiab xiav wavelengths. Engelmann qhov kev sim ua kom pom tias lub teeb liab thiab xiav yog lub zog zoo tshaj plaws rau photosynthesis
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Dab tsi yog qhov kev ua yuam kev hauv kev sim nrog cov hluav taws xob tam sim no?
Cov peev txheej ntawm kev ua yuam kev suav nrog cov cuab yeej, ib puag ncig, txheej txheem, thiab tib neeg. Tag nrho cov kev ua yuam kev no tuaj yeem ua tsis tau lossis ua haujlwm nyob ntawm seb lawv cuam tshuam li cas. Instrumental yuam kev tshwm sim thaum cov cuab yeej siv tsis raug, xws li qhov sib npaug uas tsis ua haujlwm (SF Fig
Joseph Priestley cais cov pa oxygen li cas?
Discovery of Oxygen Priestley tau nkag mus rau qhov kev pabcuam ntawm Earl of Shelburne hauv 1773 thiab nws yog thaum nws nyob hauv qhov kev pabcuam no uas nws pom oxygen. Nyob rau hauv ib tug classic series ntawm thwmsim nws siv nws 12inch 'hlawv lens' kom sov li mercuric oxide thiab pom tias ib tug zoo kawg li roj tau emissions