با سلام
ببخشيد کي ميدونه طول روز و شب در سيارات ديگه چقدر است ؟؟
يا اينکه اصلا تعريف روز و شب واسه کرات ديگه معني داره ؟؟؟؟(در مورد کره ماه راشين و افي زحمتشو کشدن) ولي يه توضيح در مورد کرات ديگه مي خواستم لطف کنيد ممنون مي شم
طول شبانه روز در کرات مختلف
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saeedjafari
محل اقامت: tehran
عضویت : چهارشنبه ۱۳۸۷/۳/۱۵ - ۰۷:۵۶
پست: 71-
سپاس: 6
Re: طول شبانه روز در کرات مختلف
خوب این سوال یه چیزه معلومه چون همه سیارات و کرات به دور چیزی در حال چرخشن (ما این چرخشو به دور ستاره میگیریم) یه مدت یه مکانی رو به اون ستاره و مدتی پشت به ستاره است
مثلا در هر جای مفروض عطارد هر 176 روز یک بار خورشید طلوع می کنه که این عدد برای هر سیاره متفاوته.
مثلا در هر جای مفروض عطارد هر 176 روز یک بار خورشید طلوع می کنه که این عدد برای هر سیاره متفاوته.
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javad123javad
نام: Javad
محل اقامت: NoWhere
عضویت : پنج‌شنبه ۱۳۸۷/۳/۲ - ۱۱:۱۷
پست: 912-
سپاس: 211
- جنسیت:
Re: طول شبانه روز در کرات مختلف
سلام
در اینجا مدت زمان طول شب و روز که نسبت به زمین مقایسه شده آوردم.....
در اینجا مدت زمان طول شب و روز که نسبت به زمین مقایسه شده آوردم.....
Mercury is the planet closest to the Sun in our Solar System. It has a long daytime (which lasts 58.65 Earth days or almost an entire Mercurian year, which is 88 days long)
Venus rotates VERY slowly. Each day on Venus takes 243 Earth days. A year on Venus takes 224.7 Earth days. It takes 224.7 Earth days for Venus to orbit the sun once. The same side of Venus always faces Earth when the Earth and Venus are closest together.
Each day on Earth takes 23.93 hours (that is, it takes the Earth 23.93 hours to rotate around its axis once - this is a sidereal day). Each year on Earth takes 365.26 Earth days (that is, it takes the Earth 365.26 days to orbit the Sun once).
The Earth's rotation is slowing down very slightly over time, about one second every 10 years.
Each day on Mars takes 1.03 Earth days (24.6 hours). A year on Mars takes 687 Earth days; it takes this long for Mars to orbit the sun once.
It takes Jupiter 9.8 Earth hours to revolve around its axis (this is a Jovian day). It takes 11.86 Earth years for Jupiter to orbit the sun once (this is a Jovian year).
Each day on Saturn takes 10.2 Earth hours. A year on Saturn takes 29.46 Earth years; it takes 29.46 Earth years for Saturn to orbit the sun once.
Each day on Uranus takes 17.9 Earth hours. A year on Uranus takes 84.07 Earth years; it takes 84.07 Earth years for Uranus to orbit the sun once.
Each day on Neptune takes 19.1 Earth hours. A year on Neptune takes 164.8 Earth years; it takes almost 165 Earth years for Neptune to orbit the sun once.
Each day on Pluto takes 6.39 Earth days. Each year on Pluto takes 247.7 Earth years (that is, it takes 247.7 Earth years for Pluto to orbit the Sun once).
Venus rotates VERY slowly. Each day on Venus takes 243 Earth days. A year on Venus takes 224.7 Earth days. It takes 224.7 Earth days for Venus to orbit the sun once. The same side of Venus always faces Earth when the Earth and Venus are closest together.
Each day on Earth takes 23.93 hours (that is, it takes the Earth 23.93 hours to rotate around its axis once - this is a sidereal day). Each year on Earth takes 365.26 Earth days (that is, it takes the Earth 365.26 days to orbit the Sun once).
The Earth's rotation is slowing down very slightly over time, about one second every 10 years.
Each day on Mars takes 1.03 Earth days (24.6 hours). A year on Mars takes 687 Earth days; it takes this long for Mars to orbit the sun once.
It takes Jupiter 9.8 Earth hours to revolve around its axis (this is a Jovian day). It takes 11.86 Earth years for Jupiter to orbit the sun once (this is a Jovian year).
Each day on Saturn takes 10.2 Earth hours. A year on Saturn takes 29.46 Earth years; it takes 29.46 Earth years for Saturn to orbit the sun once.
Each day on Uranus takes 17.9 Earth hours. A year on Uranus takes 84.07 Earth years; it takes 84.07 Earth years for Uranus to orbit the sun once.
Each day on Neptune takes 19.1 Earth hours. A year on Neptune takes 164.8 Earth years; it takes almost 165 Earth years for Neptune to orbit the sun once.
Each day on Pluto takes 6.39 Earth days. Each year on Pluto takes 247.7 Earth years (that is, it takes 247.7 Earth years for Pluto to orbit the Sun once).