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Re: Yes, I'm back

From:Nik Taylor <yonjuuni@...>
Date:Monday, January 20, 2003, 6:04
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James Landau wrote:

> (This leads to another question: is there anyone here who knows how to > find out how fast a planet will rotate on its axis
As fast as it wants to. :-) Seriously, Earth is estimated to have originally had a day of something like 5 or 6 hours, but it's lengthened over time to 24 hours due to the influence of the Moon. Well, there is a lower limit, if Earth rotated in a single second, it would fly apart, but any reasonable period would work.
> or complete a year, given its volume, mass and distance from the sun?)
T = SQRT((4*pi^2*R^3)/(M*G)) Where T is the orbital time in seconds, R is the distance in meters, M is the mass of the sun (technically total mass of the sun and the planet, but planetary masses are microscopic relative to solar masses) in kilograms, and G is the Gravitational Constant, 6.67259*10^-11
> Would the naturalism of choosing a random year length that would make > Kankonian years completely drift off from their Gregorian equivalents > after a while be important for convincing fiction?
Well, it's certainly a pretty odd coincidence if it's exactly the same length as our year. :-) -- "There's no such thing as 'cool'. Everyone's just a big dork or nerd, you just have to find people who are dorky the same way you are." - overheard ICQ: 18656696 AIM Screen-Name: NikTaylor42