He aha te mea he maero moana, me te aha he kono?

I roto i nga pukapuka o ngā haerenga me ngā haerenga, i roto i kiriata e pā ana ki ngā kaiwhakatere hepohepo, tuhinga i runga i te kaupapa, me te whakahaere matawhenua i waenganui i kaiwhakatere maha pahure wā "maero moana". Ko te wā ki te feruri i roto i te mea ko te mehua o te roa i roto i te kaipuke, me kaipuke aha e kore whakamahi i to tatou kiromita mua.

He aha te mea 1 Urungi maero?

I te tīmatanga, hāngai tenei uara ki te roa o 1/60 o te pewa tohu o te porohita i runga i te mata o te whenua ki te pokapū coinciding ki te pokapū o te ao. I roto i te mau parau te tahi atu, ki te whakaaro tatou tetahi afaraa, ko te maero moana āhua rite ki te roa o tetahi meneti o ahopae. No te mea ko te whenua paku rerekē i te āhua pōro pai, te roa 1 meneti tohu Meridian whakaaro e taea rerekē ahua, i runga i ahopae rānei. Te nuinga o te tawhiti i te amo - 1861,6 m, me te raro i te ao -. 1842,9 m Hei karo whakama, i whakaarohia ai ki whakakotahi te roa o te maero moana. Ko te pūtake tangohia roa o te 1 meneti i 45º nekehanga ahopae (1852.2 mita). Kua arahina te whakamāramatanga taua ki te mea kua riro te maero moana ngāwari ki te tātai mahi whakatere. Hei tauira, ki te hiahia koe i runga i te mahere ki te ine i te tawhiti o te 20 maero, ka ka kia nui ki te ine i te meneti pewa kāpehu 20 i runga i tetahi afaraa, mahere tenei.

Mai 1954, timata i te Hononga o Amerika ki te whakamahi i te maero moana ao (1852 mita). Tona mahi maha porotaka ake ki 1800 mita. E kore kua te ti'araa mōhiohio o tenei kōwae i manakohia. I te tahi taime i reira ko te whakaiti o «nmi», «nm» «NM» ranei. E te ara, «nm» ko te ti'araa noa o te nanometer. 1/10 maero te ao Urungi = 1 = 185.2 mita te roa taura. He moana 3-maero rite ki te 1 kawenata. I roto i te UK, i maha whakamahia ai he rite ki te 1853.184 mita tona ake maero moana. I te tau 1929, i roto i te Monaco, he hui te ao i oti rawa ki ngā take hydrography, te wahi tautuhia roa maero moana i roto i 1852,00 mita. Kaua e wareware i te Mile he kore moana anake, engari ano hoki whenua. I roto i tenei take, ko te 1.151 wa iti iho i te i roto i te moana tona roa.

He aha te mea te hononga i waenganui i te moana he maile me te kōpuku?

Mile Marine (maero moana) ranei kia rite ki te tahi mau taime i huaina ai, matawhenua navigation ranei, Kei te whānui whakamahia i roto i te geography, rererangi, me te whakatere. Mai he whanaunga tata te reira ki te ariā o te whakaminenga moana whakamahia i roto i te ahumahi kaipuke rite te wae taketake o te tere. He rite kotahi wae ki te kotahi te maero ia haora traversed te oko. Ko te ingoa "kōpuku" e tika ana ki te meka e, i roto i nga wa onamata i runga i nga kaipuke whakamahia mō te ine tere takamuri. Ko he rangitaki ranei poari i roto i te āhua o te tapatoru, ki nei i piri kawenga. Taua drogue ka piri lin (taura), e na roto i te tetahi tawhiti e here ana kōpuku. maka moana takamuri, ka hoki te wā i tīpakohia o te wā (i te 15 hēkona ki te 1 meneti) i kiia rite waiho kōpuku te wai.

He rerekē putanga e pā ana i te tawhiti i waenganui i te ngā kōpuku. Ētahi whakapono e ko te reira 25 waewae (7.62 m), a ki te mahue 15 hēkona kotahi kōpuku, i whiwhi te hua, kotahi maero moana (100 ft / min). E ai ki te putanga tuarua, ka tareka ia e here ana i roto i 47 waewae 3 inihi (14.4018 m), a ko te tatau 28 hēkona. I roto i tenei take, kotahi wae whakaatu 101,25 waewae auau / min.

Tūmanako e kore i inaianei koutou uaua i roto i te matauranga ka kupu moana, a ka kia rite mārama rite kiromita mua he maile i te waitinana.