Aces High Bulletin Board
General Forums => The O' Club => Topic started by: Terror on January 06, 2005, 02:47:28 PM
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If the moon always has the same side pointed at the earth...
Does the moon rotate?
Does the "dark side of the moon" have a "daytime"?
The moon is getting a few cm farther from the earth each year, why?
Just to get the New Year brains to pumpin....
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Answers to the first two are yes. Third one, dunno... maybe we're travelling away from the moon? Oooooooooooooooooo
-SW
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a thought.
the earth is rotating at just over 1000 miles per hour. it is orbiting the sun at
about 67,000 miles per hour. the sun, with the earth in orbit is travelling at 486,000 miles per hour around the spiral arm of the milky way which is travelling at
appx. 1.34 million miles per hour by one estimation.
is it possible that a more interesting question is: how in the hell does it stay that close?
and why cant i feel my body moving at 1.34 million mph while spinning outrageously fast.
which you are. right now. this very second.
like a little whirlybird on crack.
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interesting enough
the moon is about the size of texas.
what would happen if a comet hit the moon that was just 10 miles wide.
the moon would exploded.. and prob fall into the earths automosphere
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preferably onto texas.
: )
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Originally posted by SavedSaint
interesting enough
the moon is about the size of texas.
:rofl
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best joke i told all day..
am i wrong..?
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As I figure it:
Texas has an area of 270,000 square miles
The Earth's moon has a diameter of about 2160 miles or giving it an area of 14,657,414square miles
- Which makes the moon about 54 times bigger than Texas, not even going into the fact its a spherical body...
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oh the stars at night are big and briiiiight...
(clap clap clap clap)
on the surface of the mooooooooon.
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Originally posted by SavedSaint
best joke i told all day..
am i wrong..?
Earth
Diameter: 12,756.3 km (7926 miles)
Surface Area: 197,359,320 sq miles (4*pi*r^2) (right?)
Mass: 5.972e24 kg
Moon
Diameter: 3476 km (2160miles)
Surface Area: 14,657,402 sq miles(4*pi*r^2) (right?)
Mass: 7.35e22 kg
Texas
Size: 801miles x 773miles (267,339 actual square miles)
Mass: Alot, but not quite as much as the moon.
Texas is big, but not quite as big as the moon.
Terror
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Originally posted by JB88
...
and why cant i feel my body moving at 1.34 million mph while spinning outrageously fast...
Something to do with relativity. You are moving with respect to what? How do you know that you are not standing still and the objects you percieve as fixed are really moving by your fixed position?
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1) Yes
2) Yes. Think of the New moon phase (totally dark from earth). The opposite side is illuminated by the sun.
What is the moon's tangential velocity? If it's > than 11.2 km/sec, then there is your answer. I dunno off the top of my head.
(http://www.enchantedlearning.com/mgifs/Moonphases.GIF)
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Originally posted by Terror
If the moon always has the same side pointed at the earth...
Does the moon rotate?
Does the "dark side of the moon" have a "daytime"?
The moon is getting a few cm farther from the earth each year, why?
Just to get the New Year brains to pumpin....
Yes, the dark side of the moon has a daytime, during our solar eclipse...
Regards,
PS, you ultra melons forgot that the moon separated from the earth on september 13, 1999...why am I the only one who remembes these things?
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Originally posted by Holden McGroin
Something to do with relativity. You are moving with respect to what? How do you know that you are not standing still and the objects you percieve as fixed are really moving by your fixed position?
it is not the bullet that is moving, its your body travelling towards it. the bullet is simply slowed relative to the earths velocity.
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> The moon is getting a few cm farther from the earth each year, why?
It actually has to do with tides. The moon induces a "bulge" in the Earth, and since the Earth is spinning, this bulge is forced ahead of the Moon in relation to the Earth. This bulge has mass, since it has mass, it has gravity, which adds energy to the Moons orbit. A higher energy orbit equals a higher orbit. BTW, The Moon's gravity also exerts force on the "bulge" which causes a decelleration to the rotation of the Earth. Eventually, the Earth and the Moon will always have the same face towards each other.
Terror
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Originally posted by JB88
it is not the bullet that is moving, its your body travelling towards it.
A perfectly valid observation in constant velocity motion.
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Originally posted by Terror
Texas is big, but not quite as big as the moon.
a bit smaller then alaska too :)
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Originally posted by JB88
it is not the bullet that is moving, its your body travelling towards it. the bullet is simply slowed relative to the earths velocity.
depends on the observer...
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yep.
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Originally posted by JB88
a thought.
the earth is rotating at just over 1000 miles per hour. it is orbiting the sun at
about 67,000 miles per hour. the sun, with the earth in orbit is travelling at 486,000 miles per hour around the spiral arm of the milky way which is travelling at
appx. 1.34 million miles per hour by one estimation.
is it possible that a more interesting question is: how in the hell does it stay that close?
and why cant i feel my body moving at 1.34 million mph while spinning outrageously fast.
which you are. right now. this very second.
like a little whirlybird on crack.
Its all relative
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it is not the bullet that is moving, its your body travelling towards it.
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I choose to believe they meet in the middle.
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there is no spoon
... err bullet
on topic, dont forget the suns gravitational forces on the moon, whenever there is a solar eclipse the moon is closer to the sun than the earth, hence the sun is pulling the moon towards it.
as far as the tide thing goes, the "bulge" i the earth actually makes the equator "longer" than if yoiu were to make a line through both the north and south poles.
take a ball, and squash it a bit, that's what the earth actually is doing (except it is a bit eliptical extending towards the moon.
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Notice how JB73 placed emphisis on the words "bulge" and "longer" then talked about the poles, then extending?
Freud would have fun with this guy.
:D
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i always like the idea of the train.
If the train is traveling at the speed of light.. And the lights on.. Can you see it..
Does light leave the light bulb at all, or does it fall back.. or what..
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Well maybe all this talk of relativity will expose the heliocentric theory for the crock it is...
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Originally posted by AWMac
Notice how JB73 placed emphisis on the words "bulge" and "longer" then talked about the poles, then extending?
Freud would have fun with this guy.
:D
he'd probably have more fun with you for thinking obsucre sexual themes in another man's words.
hehehhee
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Originally posted by JB73
he'd probably have more fun with you for thinking obsucre sexual themes in another man's words.
hehehhee
Now there you go JB73 bringing sex into this thread.... reread my post again. I did not mention anything about sex or sexual themes. I just remarked on some of the discriptive words you used.
:D
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IN
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LOL
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:D
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Well maybe all this talk of relativity will expose the heliocentric theory for the crock it is...
You wanna talk about crocks, let talk about string thoery... :D
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ooooh string theory. hold on ill go get my cat!
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nothing compare's to being analyzed by a coke addict...
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In terms of string theory multidimensional geometry, using the algebraic geometric approach of Berenstein et al and methods of toric geometry, I've studied some of the non-commutative orbifolds of Calabi每Yau hypersurfaces in toric varieties with discrete torsion.
First I looked at a new way of getting complex d mirror Calabi每Yau hypersurfaces H*d忖 in toric manifolds M*(d+1)忖 with a C*r action and then I analysed the general group of the discrete isometries of H*d忖. Then I solved in terms of discrete torsion and toric geometry data of M(d+1)忖 , I built a general class of d complex dimensional NC mirror Calabi每Yau orbifolds where the non-commutativity parameters 牟米糸 and in which the original Calabi每Yau hypersurfaces are embedded.
Next I worked out a generalization of the NC algebra for generic d-dimensional NC Calabi每Yau manifolds and give various representations depending on different choices of the Calabi每Yau toric geometry data. I also studied fractional D-branes at orbifold points.
In terms of Clifford algebra, I extended the result for NC (T2 ℅ T2 ℅ T2)/(Z2 ℅ Z2) to higher dimensional torii orbifolds.
I seem to have a problem getting past 9th dimensional space, and I am thinking that perhaps it has something to do with all Calabi-Yau orbifolds being nonsingular in codimension 2.
Either that or string theory is all crap.
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simple put, ya just don't know:D
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Originally posted by VWE
You wanna talk about crocks, let talk about string thoery... :D
crocks!? Math doesn't lie :)
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I believe that the moon also has an elliptical orbit around the earth.
I think that the elliptical orbit plus the pull from the other planets and the earths path in the universe is causing the moon to move away from the earth.
Hey, what do you expect? A perfectly balanced system?
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Originally posted by VWE
You wanna talk about crocks, let talk about string thoery
I don't know.
Either all matter is made out of 'points' of matter (which seems a little strange to me) or strings of energy (which seems less strange).
I vote for the strings of energy.
If you can break matter down past atoms, molecules, quarks, etc, why should it end at a 'point' of matter? What is that 'point' and what is it made of? Shouldn't you be able to break it down even farther?
Energy seems a better way to resolve it to me.
What I don't like is the common way to describe gravity as warping time and space. Yes, it makes for a great visual and helps people understand gravity in the universe but it still seems as a short cut to thinking.
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I'm not sure, but if you believe in strings, you lose quarks right? I mean quarks were just something made up to account for the chaos of strings right?