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What would cause the solar day to be shorter than the sidereal day?
Wiki User
∙ 11y ago
The sidereal day of a planet is the time it takes to rotate once on it's axis. The solar day is the time from sunrise to sunset.
To see why they are different, let's image a planet that rotates very slowly. Every time it goes around its star once, it also rotates once on its axis. Since it rotates once on its axis per year, there is one sidereal day per year. Now, in order for this to work, one side of the planet must be facing the star at all times. This means that there is no sunrise or sunset, so on this planet, there are zero solar days in a year.
Now let's image a planet that rotates twice a year (has two sidereal days a year). At the beginning of the year, a side of that planet is facing the star. Halfway through that year, the planet has rotates once, but is on the other side of the star, so that side of the planet is now facing away from the star. At the end of the year, the planet is back where it started. There has been one sunrise and one sunset, so only one solar day.
From this we can see that a planet (as long as it has at least one sidereal day per year) has one more sidereal day per year than solar day per year. There are 365.242 solar days in an Earth year, but there are 366.242 sidereal days in an Earth year.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoreversing the direction of earths orbit
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How long does it take for a day to pass on Neptune?
The length of a day, or sidereal period, on Neptune is 16 hours 6 min 13 seconds (0.6713 days) Because Neptune is not a solid body, its atmosphere undergoes differential rotation. The wide equatorial zone rotates at a period of about 18 hours, at the polar regions the rotation period is about 12 hours.
What planet is the most cold?
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Why would a 11 year old be 17 days old on venus?
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How long is one day rotation on venus?
Instead of a similar rotational period to Earth's 24 hours, Venus takes 243 Earth days to rotate once. That's called a "sidereal day". In other words, a "day" on Venus is longer than its "year". This is the longest day in the entire Solar System. (Don't forget the "solar day" though. That's only about 117 Earth days on Venus.)
When the north pole leaning toward the the sun are days longer or shorter?
In the Northern Hemisphere they would be longer. In the Southern the would be shorter.
Do autistic persons have a shorter lifespan?
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If the direction of rotation of the Earth were reversed and the direction of revolution remained the same would the sidereal day be longer than the solar day?
Yes, I believe you have that correct.
Does the color of light affect the solar energy output in a solar pnel?
I guess that if light of shorter wavelength (red) it would have a higher energy which would mean that it would have more photons per joule.
What would happen to the temperature of the earth if it's orbit of revolution was shorter?
If the Earth's orbit around the Sun were shorter, that would imply it would be closer to the Sun and thus be subject to increased incident solar radiation - per the inverse square rule. For example, half the distance would be four times the amount of sunlight. This would cause the average temperature on Earth's surface to increase.
How would you describe the wavelengths of incoming solar radiation compared to the wavelengths of reradiated heat?
The wavelengths of incoming solar radiation are shorter than the wavelengths of reradiated heat.
How long does it take for a day to pass on Neptune?
The length of a day, or sidereal period, on Neptune is 16 hours 6 min 13 seconds (0.6713 days) Because Neptune is not a solid body, its atmosphere undergoes differential rotation. The wide equatorial zone rotates at a period of about 18 hours, at the polar regions the rotation period is about 12 hours.
What planet is the most cold?
The coldest planet used to be Pluto, but now that Pluto's not a planet anymore, the coldest planet is Neptune. Its cloud tops are at a freezing -218 degrees Celsius. That pretty cold, but it's recorded that one of Neptune's moons, Triton, has a record-breaking temperature of -235 degrees Celsius. Also, isn't this weird? You know that Mercury rotates slowly, right? Well, at night it rotates so slow that its temperatures reach -183 degrees Celsius, although Mercury is the closest planet to the sun in the solar system. Not nearly as cold as Neptune, but colder than it would ever be here on Earth! Anyways, if Pluto was still a planet, it would be the coldest, but not anymore. Now it's Neptune. Hope this helps!
How long is vladvostok from Beijing?
It is about 2000km. But if it is flight, of cause it would be shorter. ANS:2100km
How does a solar day differs from sidereal day?
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What planet had a year shorter than it's day?
Because of 3:2 spin-orbit resonance, an observer on planet Mercury would see a day only once every two of its years. Gravitational interaction with other planets are thought to have changed the eccentricity of its orbit in the past such that this ratio may have been different. Note that because of Venus's retrograde motion (spinning the opposite direction to its orbital motion), its solar day is significantly shorter than its sidereal day - if an observer could see the sun from the surface, it would appear to complete almost two days in its year.
Can solar power cause cancer?
Sun burn will increase the risk of getting skin cancer. But there's no direct link between solar power and cancer. There MIGHT be indirect links, like IF installing solar power panels would expose you to substances known to cause cancer. But the reason for the cancer then would be the dangerous substance, not the solar power.
I have two puppies from different litters and I noticed the tail on my female is shorter than in my male. What would cause this?
Genetics
