Dab tsi yog keeb kwm kev loj hlob ntawm atom?
Dab tsi yog keeb kwm kev loj hlob ntawm atom?

Video: Dab tsi yog keeb kwm kev loj hlob ntawm atom?

Video: Dab tsi yog keeb kwm kev loj hlob ntawm atom?
Video: Keeb kwm qhov tseeb ntawm xwm kab tsis yog hmoob poj koob yawm txwv 5/16/2022 2024, Kaum ib hlis
Anonim

Nyob ib ncig ntawm 450 BC, Greek philosopher Democritus tau qhia lub tswv yim ntawm atom . Txawm li cas los xij, lub tswv yim tseem ceeb tsis nco qab rau ntau tshaj 2000 xyoo. Xyoo 1800, John Dalton rov qhia txog qhov atom . Nws muab pov thawj rau atoms thiab tsim atomic kev xav.

Xav txog qhov no, lub atom thawj zaug nrhiav tau li cas?

Yog atoms yog impossibly me me, cov subatomic hais yog ntau tshaj li. Funnily txaus, lub ua ntej particle uas yog nrhiav pom Qhov tseeb yog qhov tsawg tshaj plaws ntawm peb - electron. Tus British physicist uas nrhiav pom electrons, JJ Thomson, siv txoj kev pom qhov muag tshwj xeeb los ua pov thawj lawv lub neej nyob rau xyoo 1897.

Kuj Paub, txoj kev xav ntawm atomic hloov li cas thaum lub sijhawm? Hauv chemistry thiab physics, lub atomic txoj kev xav piav qhia peb txoj kev nkag siab li cas atom tau hloov raws sijhawm . Atoms tau ib zaug xav tias yog qhov tsawg tshaj plaws ntawm cov teeb meem. Txawm li cas los xij, tam sim no paub tias atoms yog tsim los ntawm protons, neutrons, thiab electrons.

Ib yam li ntawd, nws raug nug, thaum twg txoj kev xav atomic tsim?

1803

Leej twg invented atom?

Nyob ib ncig ntawm 450 BC, Greek philosopher Democritus tau qhia lub tswv yim ntawm atom . Txawm li cas los xij, lub tswv yim tseem ceeb tsis nco qab rau ntau tshaj 2000 xyoo. Xyoo 1800, John Dalton rov qhia txog qhov atom . Nws muab pov thawj rau atoms thiab tsim atomic kev xav.

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