Video: Dab tsi yog keeb kwm kev loj hlob ntawm atom?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
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.
Pom zoo:
Dab tsi yog thawj txoj kev xav tau los piav qhia txog keeb kwm ntawm lub hnub ci los ntawm Rene Descartes hauv 1644?
Qhov kev lees paub zoo tshaj plaws ntawm kev tsim lub ntiaj teb, hu ua nebular hypothesis, tswj hwm tias 4.6 billion xyoo dhau los, Hnub Ci System tau tsim los ntawm kev sib tsoo ntawm cov huab cua loj heev uas yog lub teeb xyoo dhau los
Dab tsi yog keeb kwm ntawm kev faib tawm?
Niaj hnub nimno taxonomic system yog tsim los ntawm Swedish botanist Carolus Linnaeus (1707-1778). Nws siv cov yam ntxwv ntawm lub cev yooj yim ntawm cov kab mob los txheeb xyuas thiab sib txawv ntawm cov tsiaj sib txawv thiab yog raws li cov noob caj noob ces. Linnaeus tau tsim ib lub hierarchy ntawm pawg rau taxonomy
Lub sij hawm twg zoo tshaj plaws qhia txog keeb kwm ntawm kev loj hlob ntawm tes txoj kev xav?
Ntau tus kws tshawb fawb tau pab txhawb txoj kev loj hlob ntawm tes txoj kev xav tau hais hauv qab no raws li lub sijhawm: 1590: Hans thiab Zacharias Janssen tau tsim thawj lub tshuab tsom iav. 1665: Robert Hooke pom thawj lub cell (cork cell). 1668: Francesco Redi tsis pom zoo rau txoj kev xav ntawm tiam neeg
Dab tsi yog qhov kev xav ntawm endosymbiosis sim piav qhia txog keeb kwm ntawm lub neej?
Endosymbiotic txoj kev xav, uas sim piav qhia lub hauv paus chiv keeb ntawm eukaryotic cell organelles xws li mitochondria nyob rau hauv cov tsiaj thiab fungi thiab chloroplasts nyob rau hauv cov nroj tsuag tau zoo heev los ntawm lub seminal hauj lwm ntawm biologist Lynn Margulis nyob rau hauv 1960s
Dab tsi yog qhov txawv ntawm keeb kwm ntawm lub neej thiab lub neej voj voog?
Lub neej keeb kwm yog kev tshawb fawb txog kev xeeb tub cov tswv yim thiab cov yam ntxwv. Piv txwv ntawm lub neej keeb kwm zoo muaj xws li hnub nyoog ntawm thawj kev yug me nyuam, lifespan, thiab tus naj npawb vs loj ntawm cov xeeb ntxwv. Lub neej voj voog ntawm hom yog tag nrho ntawm cov theem thiab tsim cov kab mob mus dhau nws txoj sia