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4 MGBE. [5.
a na-ewere ụwa mgbe ụfọdụ dị ka otu, mana n'echiche na-agbanwe agbanwe nke mbara igwe a na-ewepụta unit nke uka site na nkeji oge na ogologo, jikọtara ya na eziokwu nke eluigwe na ala gravitation. Nke Astronomical unit of uka bụ na uka nke na-adọta ọzọ ahụ enịm ke unit nke anya ka na-emepụta na ahụ ahụ unit nke osooso.
N'ịmepụta usoro nkeji nke ụwa, anyị nwere ike wepụta ya unit nke uka n'ụzọ dị otú a site na ndị nke ogologo na oge Akọwapụtalarị, nke a anyị nwere ike ime na nso nso a ọnọdụ sayensị dị ugbu a; ma ọ bụ, ọ bụrụ na anyị na-atụ anya * n'oge na-adịghị na-enwe ike chọpụta oke nke otu molekul nke ihe ọkọlọtọ, anyị nwere ike chere maka mkpebi a tupu i dozie eluigwe na ala ọkọlọtọ nke uka.
Anyị ga-egosipụta akụkụ nke uka site na akara M ] na-emeso akụkụ nke ndị ọzọ nkeji. The unit nke uka a ga-ewere dị ka otu n'ime atọ isi nkeji. Mgbe, dị ka na French usoro, a akpan akpan umi,, mmiri, were dị ka ọkọlọtọ nke njupụta, mgbe ahụ unit nke uka abụghịzi inde pendent, ma na-agbanwe dị ka nkeji nke olu, ma ọ bụ dị ka [I/ 3].
Ọ bụrụ na, dịka ọ dị na usoro mbara igwe, a na-akọwa unit nke uka n'ihe gbasara ike ya na-adọrọ adọrọ, akụkụ nke [Ọ bụrụ]. [Z 3? 7-2 ].
Maka osooso n'ihi mmasi nke a uka m na a
ffl
distance r bụ site n'iwu Newtonian -j . Ka e were ya na mmasị a
ime ihe maka obere oge t na ahụ nke mbụ na izu ike, na ka mee ka ọ kọwaa oghere s, wee site na usoro nke Galileo,
ebe m = 2 -^ . Ebe r na s bụ ogologo abụọ, na t bụ a t
oge, ngụkọ a enweghị ike ịbụ eziokwu ma ọ bụrụ na akụkụ nke m bụ [i/3 ^? 7 " 2 ]. Enwere ike igosi otu ihe ahụ site na mbara igwe ọ bụla nke oke ahụ na-apụta na ụfọdụ ma ọ bụghị n'ime ha niile nke okwu f.
* Lee Prof. J. Loschmidt, Zur Grosse der Luftmolecule, Academy nke Vienna,) Ọktoba 12, 1865; GJ Stoney na Motion nke Gases, Phil. Mag., Ọgọst. 1868; na Sir W. Thomson na Size of Atoms, Nature, Maachị 31, 1870.
f Ọ bụrụ na ewere otu ụkwụ na nke abụọ dịka nkeji, otu n'ime mbara igwe ga-eme bụ ihe dịka 932,000,000 pound.
