A rana da shekaru a kan kowane duniya

A Venus, duniyar tana juyawa da sauri sosai har wata juyawa take ɗaukar lokaci mai tsawo fiye da tafiyar ta kusa da rana. Wani yini bai zama kamar wani yini ba a duk inda yake, kuma ba wata shekara ba ce. Ga yadda ake yin aiki da su biyun, a kan kowace duniya.

A rana da shekara biyu ne na daban sa’o’i, kuma kowace duniya a wurinsu daban.

Look

A rana ita ce lokacin da duniya take ɗaukar sa’a ɗaya don ta juya. shekara ita ce lokacin da take ɗaukar zuwa gefe ɗaya na rana. A kan ƙasa waɗannan suna da kimanin sa’o’i 24 da kwanaki 365. Waɗansu al’ummomi sunã da bambanci mai yawa.

Duniya	Dakata	Length of year
Mercury	176 Earth days	88 Earth days
star name	117 Earth days	225 Earth days
Earth	Sa’a 24	365 kwanaki
Dakata	24 awa 40 minti	687 Earth days
star name	9.9 awa	11.9 Earth years
star name	10.7 awa	29.4 Earth years
star name	17.2 awa	84 Earth years
star name	16.1 awa	164.8 Earth years

Da yawa:

• On Mercury, one day (sunrise to sunrise) lasts two of its years.
• Venus tana juyawa baya kuma da sauri sosai.
• Kuma waɗanda suka yi ĩmãni, sunã cẽwa: “Lalle ne mũ, munã da wata hujja bayyananniya daga Ubangijinmu.”
• Mars rana kusan daidai ce da tamu, wanda yake da amfani ga kungiyoyin rover a kan ƙasa.

Yi amfani da fanel na kwatanta a ƙasan orrery don ka kwatanta duk duniya biyu.

Understand

Akwai nau’ikan biyu na rana, kuma bambancin yana da muhimmanci.

• Dakata star name Yana tafiyar sa’a guda a kan gwargwadon taurãri. Na ƙasa shine sa’o’i 23 minti 56 dakikoki 4.
• Ranar rana ita ce daga tsakar dare zuwa ta gaba. While Earth spins, it also moves about 1/365 of the way around its orbit, so it has to turn a little extra (about 1 degree) before the Sun is back overhead. Wannan yana ɗaukar minti 4 na ƙarshe, yana ba da sa’o’i 24.

Kuma ga mafi yawan taurãri, kwãnukan biyu sunã kusa da juna. Kuma ga mãsu yin girgiza da sauri sunã mãsu sãɓa wa jũna. Mercury na juyawa sau ɗaya a kowace rana 58.6 Earth, kuma shekararsa tana da kwanaki 88. A wannan yanayin, rana daya ta rana tana da tsawon kwanaki 176 na duniya: daidai shekaru biyu na Mercury. Mercury ke juyawa sau uku ne kawai a kowace orbit biyu, wani kulle da aka haifar da shi ta hanyar girgizar ƙasar rana.

Venus tana juyawa baya (retrograde), sau daya kowace rana 243 na duniya. Because the spin and the orbit go opposite ways, they add up, and the solar day is shorter than the spin: about 117 Earth days.

Shekaru suna da tsawo tare da nisan saboda dalilai biyu: hanya ce mafi tsawo, kuma duniyar tana motsi cikin sauri. Duniya tana motsi da sauri kamar kilomita 29.8/s; Neptune a cikin kusan kilomita 5.4/s a kan hanya mai tsawon sau 30.

Master

Kuma a cikinsa akwai wani abu mai kama da haske. Da lokacin juyawa na sidiral P_rot (negative ga retrograde) da lokacin orbital P_orb, duka an auna su cikin hanya daya:

1 / P_solar = 1 / P_rot − 1 / P_orb

Ka duba ƙasa: 1/0.99727 − 1/365.256 = 1.00274 − 0.00274 = 1.00000 a rana, don haka P_solar = 1 rana.

Check Mercury: 1/58.646 − 1/87.969 = 0.017052 − 0.011368 = 0.005684, so P_solar = 175.9 days.

Check Venus (retrograde, P_rot = −243.018 days): 1/(−243.018) − 1/224.701 = −0.004115 − 0.004450 = −0.008565, so |P_solar| = 116.75 days. The minus sign tells you the Sun rises in the west on Venus.

An yi amfani da wannan tsari ne a cikin tsarin shari’ar Kepler na uku. Da T a cikin shekaru da a a cikin au, T = a^1.5. Neptune a = 30.07 au yana ba da T = 30.07^1.5 = 164.9 shekaru, wanda ya haɗu da 164.79. Wannan bambanci mai ƙaranci yana zuwa ne daga kwance da kuma daga yawan gaske na duniyar nan, wanda ya haɗa da sigar Newton ta dokar.