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Originally posted by ArMaP
Why being specific about one measurement and vague about the other?
Originally posted by johnlear
It was Saturday December 9 (1972), and we were in the Moon’s firm hold, only about 38,000 miles out and drawing closer by the moment. Eugene Cernan “The Last Man On the Moon” Copyright 1999 Eugene Cernan and Don Davis.
"At a point 43,495 miles from the Moon, lunar gravity exerted a force equal to the gravity of the Earth, then some 200,000 miles distant." - Wernher von Braun (Time Magazine, July 25, 1969.)
No need to speculate about density.
Originally posted by johnlear
It was Saturday December 9 (1972), and we were in the Moon’s firm hold, only about 38,000 miles out and drawing closer by the moment. Eugene Cernan “The Last Man On the Moon” Copyright 1999 Eugene Cernan and Don Davis.
"At a point 43,495 miles from the Moon, lunar gravity exerted a force equal to the gravity of the Earth, then some 200,000 miles distant." - Wernher von Braun (Time Magazine, July 25, 1969.)
No need to speculate about density.
John, don't use numbers out of context, puh-leeze. You must know that the Apollo's trajectory could not have possible been a straight line connecting the centers of Earth and Moon, therefore the 38,000 number in any case can not be used in the one-dimensional formulas you quoted.
The Apollo craft was never, in fact, present in the "neutral point" where by definition there is no gravitational pull at all. The shape of the trajectory does not allow for that.
Any physical quantity or strength is inversely proportional to the square of the distance between them, specifically, the gravitational attraction between two massive objects, in additional to being directly proportional to the product of their masses, is inversely proportional to the square of the distance between them.
Well, please do just for the fun of it. Calculate the mass of the Moon based on your bogus 64% g, and knowing the radius, divide the mass by the volume. Call me in the morning.
Originally posted by johnlear
Thanks for the post BS. You are welcome to apply any correction factor including Coriolis you may feel is necessary but it is not going to be equal to the difference between 43,495 and 24,000 miles. Just remember that you need to apply those corrections equally and not selectively.
The Apollo craft was never, in fact, present in the "neutral point" where by definition there is no gravitational pull at all. The shape of the trajectory does not allow for that.
There is no truth to that statement, in my opinion. There is indeed a point at which, the gravity of earth, if only for a moment, becomes the exact same as the gravity of the moon. That point is called the neutral point.
Well, please do just for the fun of it. Calculate the mass of the Moon based on your bogus 64% g, and knowing the radius, divide the mass by the volume. Call me in the morning.
This calculation would only be valid if the moon was made out of the same material as the earth.
In fact, we don’t know what the moon is made out of and could, in fact, be artificial. In which case your formula of dividing the mass by the volume would not apply.
What I did mention is that I don't know the origin of the 43k number, i.e. how Braun arrived at that.
A point in space at which a particle experiences no net gravitational force.
John, let me repeat this to you again in case you didn't get it the first time -- the spacecraft did NOT travel along the straight line connecting the centers of Earth and Moon.
Since forces are vectors, this means that the angle between the gravitational force of Earth and that of the Moon was never at exactly 180 degrees,
making it impossible for them to completely cancel.
There was a point where the magnitudes of the vectors were the same, but the net force acting on the spacecraft was not zero even then.
Originally posted by johnlear
Originally posted by buddhasystem
What I did mention is that I don't know the origin of the 43k number, i.e. how Braun arrived at that.
Thanks for the post BS. Von Braun is using the number of miles which represents where the 'neutral point' is. The neutral point is defined as:
A point in space at which a particle experiences no net gravitational force.
Since forces are vectors, this means that the angle between the gravitational force of Earth and that of the Moon was never at exactly 180 degrees
Nobody said it was.
making it impossible for them to completely cancel.
Try "equal" then. No: 'net' gravitational force.
The neutral point is where the earth pull equals the moons pull; the spacecraft stops decelerating and start accelerating. And that point is 43,495 miles from the moon according to Von Braun and to numerous other sources. And the Bullialdus/Newton law of inverse square apllied to that figure makes the gravity on the moon 64% that of earth's.
I know that roughly 43k miles produces the roughly 64% result. What I still don't know is how Braun got this number to begin with. Since I assume the Chinese, ther Japanese and even the Russians (who flew a lot of missions to the Moon) wouldn't be very interested in the NASA "coverup" participation, I can only assume that the numbers used by all these other nations must be real... Which meant that whatever source Braun used for his quote was faulty. It may be, for example, that Braun, who was German, applied the miles to kilometers conversion coefficient (which he undoubtedly had to do on great many occasions in his life since he was trained in the metric system) without realizing he already had the miles number in his hand.
Originally posted by johnlear
But let me also respectfully suggest that the above argument is probably the poorest effort at the challenge I have ever seen. On one hand I am embarrassed for you but on the other hand I am delighted that this is all you have to offer: Von Braun confusing the neutral point in miles with kilometers?
You are not going to get anywhere accusing Von Braun, Americas most highly respected rocket scientist with nonense.
So let me respectfully suggest that you pull back and regroup.
john,
Any point source which spreads its influence equally in all directions without a limit to its range will obey the inverse square law.
Are you saying that gravity has no limit to its range? That the force of gravity, from earth, can be felt at all points in the universe?
If so, my physics professor from college will be pissed.
Last but not least, try to imagine the lunar module taking off from the lunar surface in 64% gravity environment, and speeding off to the orbit... and ask yourself how that is possible with the amount of fuel and the tiny engine that they had.
After that, may I respectfully ask you to ponder the model of the Moon which you are trying to push here, where that said Moon is heavier than lead.
Originally posted by johnlearThanks for the post BS.
Originally posted by johnlearSince the moon is obviously not heavier than lead we are very limited in our possibilities of explanation/rationalization keeping the 64% of Earth's gravity lunar model.
Android doesn't anger, nor does he engage in actual combat, rather he will merely point out the logical inconsistencies of other Warriors. Irony and sarcasm are completely lost on Android, and being impossible to insult or injure in any way, he is invulnerable to conventional attack. If, for example, someone were to call him a pinhead, he would get out a tape measure and after finding that his cranium falls within normal size specifications Android would dismiss the comment as erroneous. Android's circuits are not equipped to process ambiguous or aesthetic input, consequently any extensive discussion involving personal feelings, intuition, art and metaphorical allusions will quickly drive Android from the field of battle.
Originally posted by johnlearThanks for the posts, they are enjoyable.
Originally posted by buddhasystem
You said nothing about the origin of that number, i.e. how Braun got it. Did he arrive to it by calculation based on the pre-supposed 64% lunar g?
Mr. Lear, how do you explain the japanese orbiter's pictures not showing a breatheable atmosphere on the moon ?
Also, whay hasn't SETI detected any of the civilizations you claim are on the planets in our solar system ?
with the writers on strike, you may be my last source of fresh entertainment
Originally posted by johnlear
Originally posted by syrinx high priest
Also, whay hasn't SETI detected any of the civilizations you claim are on the planets in our solar system ?
SETI is a joke.
Originally posted by johnlear
SETI is a joke.