Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: Joseph Priestley (; 24 March [O.S. 13 March] 1733 <unk> 6 February 1804) aive wechi 18th-century English Separatist theologian, natural philosopher, chemist, innovative grammarian, multi-subject educator, uye liberal political theorist uyo akaburitsa anopfuura 150 mabasa. Munhoroondo iye ave achinzi ndiye akawana okisijeni, achiiwana iri mumhepo, kunyange zvazvo Carl Wilhelm Scheele naAntoine Lavoisier vanewo zvavanotaura zvakasimba kuti ndiye akawana okisijeni. Paaiva mupenyu, mukurumbira wake wesayenzi wakanga wakavakirwa pakugadzira kwake mvura ine soda, zvaakanyora nezvemagetsi, uye kuwanikwa kwake kwe"mhepo" dzakawanda (magasi), yakakurumbira kupfuura dzose iri iyo Priestley akadana kuti "mhepo isina mvura" (oksijeni). Asi kutsunga kwaiita Priestley kudzivirira dzidziso yephlogiston uye kuramba zvaizoitwa nemakemikari kwakazoita kuti azosiyiwa nevanhu vezvesayenzi.  Mubvunzo: Joseph Priestley aiva ani?
mudzidzi wezvechitendero wechiNgezi wezana ramakore rechi18 weSeparatist, muzivi wezvakasikwa, kemisiti, nyanzvi yemitauro, mudzidzisi wezvinhu zvakawanda, uye nyanzvi yezvematongerwe enyika yezvematongerwe enyika uyo akabudisa mabasa anopfuura 150