Rana tsaka - wannan shi ne nawa lokaci? Lokaci na rana - rana. AM - lokaci

Lokaci, kamar yadda ka sani - dangi lokaci, da kuma a wasu lokuta, da kuma Kalmomin. Muna amfani da su raba shi a cikin shekaru, watanni, kwanaki, awa, minti da sakan. Amma irin wannan lokaci kamar yadda rana tsaka - wannan shi ne nawa lokaci? Sai dai itace cewa amsar wannan tambaya shi ne ba da sauki kamar yadda alama da farko kallo. Kuma idan ka ce da rana - shi ne sa'a goma sha biyu na rana, za ka iya yin kuskure. Shin haka yana nufin cewa wannan lokaci kamar yadda relyativen, kamar duk mutum vremyaischislenie? To, a da babu. Bari mu yi kokarin nazarin wannan matsala mafi warai.

rana

Don amsa wannan tambaya, "noon - shi ne yadda za dogon?", Wajibi ne a san gwargwado ga abin da shi ne. Wannan astronomical m ne definition ga tsakiyar rana. Kuma yaya suka bambanta daga kwanan wata ko rana na? A cikin harshen Turanci, wanda, kamar yadda muka sani, shi ne mafi aikin fiye da Rasha, wannan analogue a kamus. Da talakawan mutum a titi ce da rana, wanda ke nufin "rana". Domin a tsaurara tsarin rubutu kwanaki kamar yadda irin wannan amfani da mafi daidai lokaci - 24 hours. magana dare da rana ne kuma na kowa. A Slavic harsuna da kalmar "rana" ko "Doba" ya zo daga kalmar "taron" da "hadin gwiwa". Saboda haka, wani sabon rana ta fara, ko bayan-kona magariba ko a lokacin asuba, wato, a lokacin da akwai duhu da hasken rana hours. Tsakar rana, kamar yadda ya bayyana a sarari daga etymology na kalmar, shi ne tsakiyar rana.

Solar da sidereal rana

Mun yi amfani da su yi tunanin cewa lokacin naúrar aka yi sama da ashirin da hudu, amma Masana ilmin rarrabe tsakanin hasken rana da kuma sidereal rana, wanda ba daidai da juna. Duniyar mu rotates a kan ta axis 24 hours, amma saboda da rãnã motsa orbital motsi na Duniya, don haka da sidereal rana yana ashirin da uku hours, hamsin da shida da minti kuma hudu seconds. Akwai wani abu to tunani game! Musamman a matsayin Duniya motsa a kusa da rãnã unevenly. Don gyara kuskure, a kai a kai Disamba 31 ko 30 ga watan Yuni, ya gabatar da ake kira "tsalle na biyu." Don sanin wannan rana - wannan shi ne nawa lokaci - a cikin Observatory na Greenwich a ranar da vernal ko kaka equinox. A babba gefen hasken rana faifai dole ne ya tashi sama da ƙasa a 6 am da kuma gaba daya daga wurin a 6pm. A luminary da tsakar rana aka located a tsakiyar tsororuwar sama sararin sama - a Zenith.

Dare da rana

A rayuwar yau da kullum mu sau da yawa musanya wadannan biyu Concepts. Saboda haka, za mu ce "da ranar Yuni 18", yana ambaton cewa dukan lokaci jere daga 0 zuwa 23 hours, 59 minutes da kuma 59 seconds. Amma ba ko da yaushe iyakoki na rana bauta a tsakar dare. A zamanin d Helenawa, da Masarawa, da Slavic kidaya daga farkon wani sabon rana alfijir. A cikin al'adar Yahudawa, "Yamama", watau rana ta fara da sama haske a sama da farko star (watau bayan faduwar rana). Alãma daga irin wannan lissafi lokaci yana cikin "maraice" a bikin babbar addini holidays, don haka shi ne wuya kwatanta biyu dabi'u. Rana tsaka - wannan shi ne nawa lokaci? Yana iya zama kamar awa shida da goma sha bakwai. Musamman ma a cikin temperate latitudes na hasken rana ya dogara a kan yanayi. Da kuma yadda sa'an nan domin sanin da rana a cikin Arctic Circle, inda mu haske ba za a iya nuna for kwana?

Constant da kuma zumunta

Zai ze cewa duk abin da yake da sauki. A rana da tsakar rana tsaye a Zenith, watau, ya kai gare shi da iyakar tsawo a cikin sama. Haskaka a cikin latitudes yakan ba daidai a gabas da kuma kadan kudu, kuma shi motsa tare gefen da rana sama. Saboda haka, a lokacin da ya kai gare shi da iyakar tsawo da kuma farawa da motsi zuwa kusa, wurinta za a iya bayyana a matsayin tsantsar Southern. A ekweita, da tsakar rana - wannan shi ne inda haske na haskawa dama a bisa kansa. Kuma a kudancin yammancin duniya a wannan lokaci da rana yake a bayyane ko a cikin arewa. Lokaci na rana - da rana, safe, da yamma da kuma da dare - dabam dangane da kakar. A lokacin rani da ta samun duhu daga baya, wani wuri akwai fari, darũruwa da farkon hunturu dare sauka. Amma da rana - shi ne akai. A wannan lokaci, da inuwõyinsu suna guntu (a cikin tropics, suka kullum boye ƙarƙashin ƙafãfunku), don haka tsakar rana ne sauki yin lissafi. Zo a kan lebur ƙasa, karya a cikin ƙasa a tsaye fegi. Next zuwa kafa wani kamfas. Lokacin da inuwa daga cikin fegi zai nuna daidai da kudu, sa'an nan ya zo da tsakar rana.

Abin da ya hana domin sanin daidai lokacin

Yana da dukan ka'idar. Kuma abin da zai faru idan ba mu yanke shawara a kan wannan sauki gwaji? Bari mu ce mu ciyar da mu da kwarewa a Berdyansk (Ukraine). A gwaji sakamakon ya nuna cewa akwai tsakar rana ta auku a cikin sa'o'i 11 da minti 40. A Transcarpathia da adadi ne canja da rabin awa a cikin wasu shugabanci - 12:30. Me ake karkatar rana a kan Agogon ba ya dace da gaskiya da hasken rana Zenith? A nan a cikin dokokin yanayi mamaye da manufofin sharudda. Don kauce wa rikice a cikin jadawalin harkokin sufuri da kuma sauran inconveniences, jihohin nemi su hada duk na yankinsu a karkashin wannan Shiyyar lokaci, kuma kawai ikon Refayawa kamar Rasha ko Amurka, dole raba ƙasar game da lokaci. Conventionally, dukan duniya ne zuwa kashi 24 lokacin da zones. Universal anã fitinar GMT. Wannan sifili Shiyyar lokaci (UT0). All na yammacin Turai ba, fãce da UK, Ireland da kuma Portugal, na zaune a yankin UT + 1. A wannan yanayin, da gaskiya tsakar rana aka lasafta ga yankin, dake kan iyakar Poland da Jamus. Saboda haka, a Spain rãnã kai ta Zenith a lokacin kira na sauri for game da sa'a guda daga yini.

Da adana lokacin rana

Idan muka gudanar da wani gwaji mu da wani fegi da kamfas a Rasha Federation, za mu bukatar mai yawa haƙuri. Me ya sa? Shin kun manta da yadda 'yan shekaru da suka wuce, na karshe Lahadi na Maris, duk koma gaba daya hour kibiyoyi? The real lokaci - hunturu. Kuma a lokacin rani, har ma a Moscow zo da tsakar rana sa'a guda daga yini. A karo na farko da ake kira "hasken rana tanadi" lokaci ya gabatar a 1930 "ya cece makamashi" a cikin ƙasa. Sa'an nan, a cikin shekaru na perestroika shi an soke ta. Sa'an nan, ya shiga sake. Kuma a sa'an nan, a karshe, Rasha likitoci sun zo da m Tsayawa akan matsayin cewa tun da miƙa mulki sau biyu a shekara a sabon lokaci adversely rinjayar da jikin mutum, shi wajibi ne ya bar bazara. Me ya sa ba hunturu, a bar daga lissafi.

Mene ne PM kuma PM

Duk da yake mai sauki da mutum a kan titi amfani da za a auna cikin sharuddan kafin da kuma bayan tsakar rana. Ko da yake mun sanya wani 24-hour rabo daga cikin rana, mafi yawan mutane kalle a zagaye kira na sauri ne zuwa kashi goma sha biyu sassa. Kuma sau da yawa nuna ta hour, wanda ya nuna a takaice allura. A lokaci guda kara zuwa nan kowane lokaci. Kamar yadda shi dai itace, "karfe biyu", "kwanaki uku", "karfe shida". A Birtaniya Empire lokaci an dauka don nuna in ba haka ba. Wato, shiryar da tsakar rana. Ko gaishe haka: «Barka da yamma!» - yana nufin "mai kyau poslepoludnya ku." Irin wannan vremyaischislenie tsira da yanzu, haka ma, an yi amfani a cikin kasashen na tsohon Birtaniya mazauna. Wannan inda za ka iya samun irin wannan m maganganu kamar yadda 8 AM kuma 3 PM. Fassara zuwa Rasha, yana nufin takwas, a sãfe da uku a rana. Hadishi raba lokaci har rana tsaka, sa'an nan ya zo daga na da Latin. Wannan ne evidenced da acronym kanta. Saboda haka, AM ne wani raguwa da ante meridiem (kafin rana tsaka). A PM, bi da bi, daga cikin Littãfin da tazarar lokaci tsakanin karfe 12 da rana da kuma tsakar dare.