Aces High Bulletin Board
General Forums => The O' Club => Topic started by: Tac on November 20, 2008, 09:06:23 PM
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Radial velocity is the rate at which one or 2 objects approach or move apart from each other (aka the old 2 trains on collision course).
I'm trying to find out if there is a similar measurement that will tell the user that both objects are in fact running towards each other and not apart. As in a negative radial velocity means closing in, positive radial means moving apart.
I need to find out if there is a measurement specifically for TWO objects (not one, not three.. two) that would tell the user if moving closer it will be a negative number and apart a positive number.
Its a long shot but I wonder if you guys know any (if any exist).
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physics? not my cup of tea.
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What is this for? Documentation, or programming, or..?
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was fiddlin' with some stuff. found it I think. Relative Velocity.
:P
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Yeah thats them big fancy words
Around here, negative radial velocity means its comin at'cha and get yer butt outta the way
positive radial velocity means yer tractor is runnin off without'cha
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positive radial velocity means yer wife is runnin off without'cha
Fixed :D
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Radial velocity is the rate at which one or 2 objects approach or move apart from each other (aka the old 2 trains on collision course).
I'm trying to find out if there is a similar measurement that will tell the user that both objects are in fact running towards each other and not apart. As in a negative radial velocity means closing in, positive radial means moving apart.
I need to find out if there is a measurement specifically for TWO objects (not one, not three.. two) that would tell the user if moving closer it will be a negative number and apart a positive number.
Its a long shot but I wonder if you guys know any (if any exist).
I am sorry but I fail to understand your question.
The most common way to measure radial velocity is by using the Doppler effect. You shoot a signal with some frequency related to it (wave, series of pulses etc.) at the other object and measure the frequency in the returned signal - This is how radars and lasers are used to measure radial velocity. The other option is to use a signal of known frequency emitted by the other object and measure it frequency when it reaches you - this is how radial velocities are measured in astronomy. The ratio between the "original" and received frequencies is a function of the relative radial velocity. The exact formula depends on the case (returned signal, source emitted signal, sound wave, light etc.).
The positive/negative value of the velocity is just a matter of definition and may be confusing. This is why "blue shift" and "red shift" are commonly used to describe "approaching" and "receding" objects instead.
By the way, an object with a radial velocity toward you does not necessarily mean it is on a collision course.
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Radial velocity - 1.(n) The forward or backward motion as measured and interpreted by the speedometer. 2. (n) The quantity of rotations multiplied by the vector of the wheels on the bus as they go round and round.
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What is this for? Documentation, or programming, or..?
He's developing an aimbot ;)
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Where did the first object come from and where is it going? Now what about the second object? Did either bring the kids or are they alone? What altitude...... I need some input to work on this simple process.....
Oh yes... what color is the first object... this is not necessary for the second object for obvious reasons.
BTW is one named Willy? I hear he goes round n round in circles..... and he flies high like a bird up in the sky... oh ohhhh...
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I need to find out if there is a measurement specifically for TWO objects (not one, not three.. two) that would tell the user if moving closer it will be a negative number and apart a positive number.
Its a long shot but I wonder if you guys know any (if any exist).
Umm..isn't it called distance?
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(http://i435.photobucket.com/albums/qq77/AAdeath/ab80229024033a9a.jpg)
This is how I measure!!!
:rofl