Tawhiti i roto i te wāhi. kōwae arorangi, marama tau me te parsec

Hoki ana tātaitanga, te whakamahi i arorangi wae motuhake, e kore e nei tonu mārama ki te iwi noa. He mārama te reira, no te mea ki te kei te whanganga tawhiti rangi i roto i kiromita, ka te maha o ngā kore i roto i te kanohi e kia atarua. Na reira, ki te ine i tawhiti rangi noa ki te whakamahi i ngā rahinga nui nui: te kōwae arorangi, marama tau me te parsec.

Ko te kōwae arorangi te maha whakamahia ki te tohu tawhiti i roto i to tatou iho pūnaha solar. Ki te te tawhiti ki te marama tonu e taea te faaite i roto i kiromita (384,000 km), te tata ki te ara o pluto ko e pā ana ki 4250 miriona km me te mea hoki ka tino uaua te matauranga. Hoki enei tawhiti he wa ki te whakamahi i te kōwae arorangi (AU) i te mea e rite ana ki te tawhiti toharite i te whenua ki te ra. I roto i te mau parau te tahi atu, AU 1 hāngai te reira ki te roa o te tuaka semimajor o to tatou āmionga Papatūānuku (150 miriona. km.). Na, ki te tuhituhi koe e te tawhiti poto ki pluto ko 28 AU, a kia te ara roa 50 AU, he reira nui māmā ki te whakaaro.

Ko te nui rawa i muri - he tau-marama. Ahakoa kei konei te kupu "tau", e kore te mea e tika ana ki te whakaaro e he reira e pā ana ki te wā. marama kotahi tau, ko te 63.240 AU Ko te ara, e e te hihi o te marama mo te 1 tau tenei. Kua tatau arorangi e i tawhiti noa nga koki o te hihi ao o te marama tae tatou neke atu i te 10 piriona. Tau. Hei whakaaro tenei tawhiti nui; tuhituhi e matou i te reira i roto i kiromita: 95000000000000000000000. Ninety-rima piriona trillion kiromita mua.

E kore te mea inamata te meka e haere te marama, engari ki te tere ngā, ka anga nga kairangahau ki te whakapae mai 1676. Ko reira i tenei wa te arorangi Danish Ole Roemer ingoa ite e timata nga eclipses o āmiorangi o Hupita ki hinga ki muri, a puta ana e ia i te wa ka te ahu i te whenua mo tona ohuraa ki te taha ki te ritenga atu o te ra, te tahatua o taua i ko Jupiter. ka mau te reira i te tahi wa, timata te whenua ki hoki mai, a ka timata ano te āraitanga ki whakatata te whakaritea tonu.

Ko te kupu, i reira i kitea e pā ana ki 17 meneti te wā rerekētanga. Mai i tenei kitea, i mutu ai: marama i runga i te wahi o te tawhiti roa ka mau 17 meneti i roto i te diameter o āmionga o te whenua. Kua Mai kua kï reira e te diameter o te āmionga ko e pā ana ki 186 miriona maile (inaianei tenei taimau ko 939 120 000 km), huri i te reira i roto i taua i te neke kurupae marama i te tere o e pā ana ki 186.000 maero mo 1 te rua.

I roto i to tatou wa, whakawhetai ki a Ahorangi Albertu Maykelsonu, nei i takoto ki te nuinga tika te whakatau he aha te mea marama he tau, me whiwhi te hua whakamutunga i te whakamahi i te tikanga rerekē: 186.284 maile i roto i te 1 te rua (āhua 300 km / s). Na, ki te tatau koe i te maha o hēkona i roto i te tau, me te tini i te reira i tenei tau, kitea tatou e te marama i te tau ko te roa o 5 880 000 000 000 maile, e hāngai ana ki 9,460,730,472 580.8 km.

Hoki ngā take mahi maha whakamahia arorangi pērā i te parsecs kōwae tawhiti. Ko reira rite ki te displacement o te whetu i te papamuri o te tahi atu tinana no te 1 '' i displacement kaimātakitaki i te 1 pūtoro o te āmio o Papatūānuku. Mai i te Sun ki te whetu tata (ko tenei proxima Centauri pūnaha Arepa Centauri) 1.3 parsecs. Kotahi parsec ōrite 3,2612 kōrero. tau 3.08567758 × 1013 km ranei. Ko te kupu, he tau-marama, he iti iti iho i te wahi tuatoru o te parsec.