Yadda za a gane magana "rana a ta Zenith"

A wani zafi zafi rana, a lokacin da waje ne m, kuma muna da aka ƙãre daga zafin rana, muna ji sau da yawa da kalmomin nan "rãnã a ta Zenith." A cikin fahimtar wannan shi ne cewa sama jiki ne located a tsororuwar kuma mafi dumi, daya ma iya ce, scorches ƙasa. Bari mu yi kokarin kadan tsoma a cikin ilmin taurari da kuma magance more a cikin wannan magana da kuma yadda gaskiya mu fahimtar wannan sanarwa.

layi daya na latitud

Ko da tare da makaranta shirin, mun san cewa a wannan duniya tamu akwai abin da ake kira a layi daya, wanda suke ganuwa (hasashe) line. Su zama ne saboda ka'idojin lissafi da kimiyyar lissafi, da kuma ilimi na, da yadda aka wadannan daidaici ne zama dole domin ya gane labarin kasa na dukan hanya. An kasu kashi uku mafi muhimmanci layi - ekweita, da yammacin sahara da kuma Arctic Circle.

ekweita

Ekweita da aka kira wani ganuwa (notional) line cewa ya raba wannan duniya tamu zuwa biyu m hemispheres - ta Kudu da kuma ta Arewa. An dade an san cewa Duniya ba a kan uku da ginshiƙai aka yi ĩmãni, a zamanin da, kuma yana da siffar zobe siffar da kuma, ban da motsi a kusa da Sun, rotates a kan ta axis. Sai dai itace cewa da mafi tsawo a layi daya a duniya, da ciwon tsawon game da dubu 40 km, -. Shi ne ekweita. A ka'ida, daga wani ilmin lissafi ra'ayi, duk abin da ya bayyana a sarari, amma bai da shi kome ga labarin kasa? Kuma a nan, a kusa da jarrabawa, shi dai itace cewa wannan bangare na duniya, wanda aka located tsakanin yammacin sahara, samun mafi hasken rana zafi da haske. Wannan shi ne saboda a gaskiya wannan yankin na Duniya ne ko da yaushe ta karkata zuwa da rana, don haka haskoki suna fadowa kusan tsaye. Daga wannan shi ya bi cewa Equatorial yankunan kan duniyar tamu na da mafi yawan zafin jiki da kuma danshi-Laden iska talakawa ƙirƙirar karfi evaporation. Rãnã a ta Zenith a ekweita ne sau biyu a shekara, cewa an cikakken haskakawa madaidaiciya ƙasa. Alal misali, ya taba faruwa a irin wannan sabon abu a Rasha.

tropics

A cikin duniya akwai Southern da kuma Northern yammacin sahara. Abin lura shi ne cewa da rana ne a ta Zenith a nan kawai sau daya a shekara - a kan rana na solstice. Lokacin da wani da ake kira hunturu solstice - Disamba 22, ta karkata zuwa da rana kamar yadda zai yiwu ne m yammancin duniya, da kuma a kan Yuni 22 - a kan m.

Wani lokaci, Southern da kuma Northern yammacin sahara suna suna bayan da taurari na zodiac, wanda shi ne a kan hanyar da rana a cikin wadannan kwanaki. Alal misali, Southern conventionally kira da Tropic of Capricorn da Arewa - Cancer (Disamba da kuma Yuni daidai da).

iyakacin duniya da'ira

Arctic Circle aka dauke su a layi daya, sama da sabon abu ne lura a matsayin iyakacin duniya da dare ko rana. Location latitud, wanda su ne iyakacin duniya da'ira, kuma ya quite a ilmin lissafi bayani, shi ne debe 90 ° karkata na duniya ta axis. Ga Duniya, wannan darajar ne daidaita da iyakacin duniya da'irori 66,5 °. Abin baƙin ciki, da mazaunan temperate latitudes ba zai iya kiyaye wadannan mamaki. Amma da rana ne a ta Zenith a cikin layi daya m ga Arctic Circle, taron shi ne cikakken halitta.

Gaskiyar na kowa ilimi

A duniya ba tsaya har yanzu kuma, ban da motsi a kusa da Sun, kowace rana revolves a kusa da axis. A lokacin shekara, mun lura da yadda canza longitude na rana, da iska zazzabi waje da taga, kuma mafi m iya lura canji a matsayin taurari a sararin sama. Domin 364 kwanaki da Duniya ke cike hanya a kusa da rana.

Dare da rana

Lokacin da muke da shi cikin duhu, cewa shi ne dare, an ce cewa da rana ne, a wani lokaci ba tazara maida hankali ne akan wani daban-daban yammancin duniya. Akwai quite mai ma'ana tambaya, me ya sa da rana ba daidai yake da tsawon lokacin da dare. Gaskiyar ita ce, yanayin daga cikin jirgin sama ne ba a dama kusassari ga Duniya ta axis. Lalle ne, a cikin wannan yanayin, za mu ba da yanayi a cikin abin da rabo na tsawon yini da dare canje-canje.

A cikin kwanaki 20 na watan Maris a cikin shugabanci na rãnã bends da Arewa iyakacin duniya. Sa'an nan, a game da tsakar rana a kan ekweita, za ka iya daidai ce cewa da rana ne a ta Zenith. Bi da kwanaki a lokacin da mafi arewacin wurare kiyaye kwatancinsa. Tuni a Yuni 22, da rana ne a ta Zenith a kan Tropic of Cancer a arewacin yammancin duniya wannan rana aka dauke su tsakiyar lokacin rani, da kuma yana da a kalla longitude. solstice sabon abu - tabbatar da dalilin ne mafi saba mana.

The ban sha'awa abu ne cewa, bayan da cewa rana kome ya faru a sake, amma a baya domin, da kuma ci gaba har zuwa wannan lokacin a lokacin da layin zuwa ekweita da tsakar rana, rana ne a ta Zenith sake - wannan ya faru a ranar 23 ga watan Satumba. A wannan lokaci, da tsakiyar lokacin rani ya fara a kudancin yammancin duniya.

Daga dukkan wannan shi ya bi cewa sa'ad da rana ta a ta Zenith a ekweita, a duniya, darũruwa tsawon - 12 hours, wannan tsawon lokaci daidaita da rana. Mu kasance munã kiran wannan sabon abu da rana daga cikin kaka, ko spring equinox.

Duk da cewa da daidai bayani na manufar "rãnã a ta Zenith," mun tattauna, shi ne har yanzu fiye da na kowa gare mu, mu zama cikin wording cewa yakan haifar da wani kawai gano da rãnã a matsayin babban matsayin yiwu a kan wani ba rana.