Astronomy Picture of the Day 9-04-02

NASA ^ | 9-04-02 | Robert Nemiroff and Jerry Bonnell

[PsyOp]

"compressed air Chicken Corpse cannon..."

I want one! Have it shipped to the hanger and 25.5 and I'll see if we can convert it for use against Islamic fanatics. I envision something like a 'Compressed Ion Pork Corpse Gattling Gun' - If we get on it now, we might have one ready for testing when Haj rolls around.

I wonder if we'll be able to mount one in an A-10 or if we'll have to use an AC-130. Aw heck. we'll make it big an use the 130 - we can carry more ammo that way.

[2Trievers]

"At what point in the gravity coefficient does 'bounce' revert to its inverse and become 'splat'? And is that a function of velocity or mass? P.S. I never did well with algebraic equations, but this seems to be working for me. Certainly I would have done much better under your tutelage. "

The sublimation rate is a characteristic physical property of any solid that depends only on the surface temperature the partial pressure of a vapor over a condensed phase is equal to the vapor pressure, f(T), when in equilibrium. The maximum sublimation can be calculated by assuming that all evaporated molecules re removed before they re-condense.

[µ]1/2S = P ----------[2 pi R T]1/2where
S = sublimation mass flux (kg/m2/s)
P = vapor pressure (N/m2)
[ ] = 1 / rms velocity away from surface

So it seems the "splat" you want to achieve is based on temperature ... now about that tutelage comment ... That may have something to do with temperature too. &;-)

[sleavelessinseattle]

And is that a function of velocity or mass?

Ironically...Mass drops out of the function assuming no air resistance...The kennedy factor will require empirical data collection(bring the foul weather gear) All you really need is the height of the bounce which can be derived from the elasticity coefficient of the "projectile" Once you have the height of the fall-to-splat, Its simply a matter of 7meters per second squared to determine the (hopefully!) Terminal velocity....

[sleavelessinseattle]

Compressed Ion Pork Corpse Gattling Gun'

Oh dear Psy...You've done it again! LOL An A-10 Warthog belching identifiable porcine projectiles...That ought to send the "faithful" back into their trenches to comfort Fatima's many goat relatives!

[PsyOp]

We'll completely redefine the term "makin' bacon" with that baby!

[PsyOp]

"Its simply a matter of 7meters per second squared to determine the (hopefully!) Terminal velocity...."

That's why I want to try this in a gravity well - to bump up that terminal velocity figure. I figure the results will be quite spectacular.

[PsyOp]

"now about that tutelage comment ... That may have something to do with temperature too. &;-)"

Hmmm... not sure to go with that one. So I'll say that its simple reconition of your superior teaching skills and hope that keeps me out of trouble. ;-]

[2Trievers]

Could you possibly be wrong ... because the transition from an unstable configuration to a stable one is possible, but the converse is not. This principle implies a fundamental asymmetry in evolution: one direction of change (from unstable to stable) is more likely than the opposite direction. The generalized, "continuous" version of the principle is the following: The probability of transition from a less stable configuration A to a more stable one B is larger than the probability for the inverse transition: P (A -> B) > P (B -> A) (under the condition P (A -> B) =/ 0) A similar principle was proposed by Ashby in his Principles of the Self-Organizing System (1962):"We start with the fact that systems in general go to equilibrium. Now most of a system's states are non- equilibrial [...] So in going from any state to one of the equilibria, the system is going from a larger number of states to a smaller. In this way, it is performing a selection, in the purely objective sense that it rejects some states, by leaving them, and retains some other state, by sticking to it. " This reduction in the number of reachable states signifies that the variety, and hence the statistical entropy, of the system diminishes. It is because of this increase in neguentropy or organization that Ashby calls the process self-organization.

But how does your formula fit in with the 2nd law of thermodynamics, which states that entropy in closed systems cannot decrease? &;-)

[2Trievers]

"Hmmm... not sure to go with that one. So I'll say that its simple reconition of your superior teaching skills and hope that keeps me out of trouble. "

I think you guys should work out the perturbations on your Recursive Systems Construction.

Meanwhile I have some reading to do ... Simon's best seller, "The Architecture of Complexity."

Later guys. &;-)

[PsyOp]

OK. You two have managed to lose me with all the algebra and entropy vs. thermodynamics stuff. All I care about is that when all is said and done something goes BOOM and results in a re-organization of mattter - regardless of how self-organizing it might be. ;-]

Sounds like a good book Trievers. I myself am reading Clancy's latest, "Red Rabbit". Very good, especially if you want to know why the Soviet Union collapsed. Clancy really did some serious homework on this. I suspect he's spent some time hanging at the Hoover Institute and similar places.

[2Trievers]

Geeze Psyop ... we didn't even get to the Principle of Autocatalytic Growth yet ... entropy and energy is only the beginning. Are you really looking for a tutor? Somehow I think your heart really isn't in this. &;-)

[sleavelessinseattle]

I'm just glad this isn't a French Language thread! Your lethal non sequiturs cause me to experience a strange attractor probability wave collapse! VERY strange! You could sell tickets to your 3D event space!

[2Trievers]

L'exécution générale de complexes astronomique est principalement influencée par le rayonnement d'arrière-plan de ciel de nuit. La lumière dispersée de la Lune fait une contribution importante à celui-ci. Pour le tenir compte de tel rayonnement d'arrière-plan dans le cas de la nuit le ciel sans nuages un modèle qui décrivant les caractéristiques de la lumière dispersée que la Lune a été offerte. En plus, un plutôt empirique expression a représenté le spatial distribution de l'arrière-plan rayonnement dans arbitraire unités avec spectral transparence de l'atmosphère $p_\lambda geq 0.7$ a été proposé. En dépit de sa simplicité le modèle est plus évident, logique et précis que ces a proposé plus tôt. &;-)

[PsyOp]

"Somehow I think your heart really isn't in this. &;-)"

Of course it is. But I'm a tactile learner. The formulae for dynamite, for example is interesting, but to keep my attention you need light one of those puppoes off every now and then. I need to see practical applications to truly understand many things. Some things just don't sink in unless I get my eyebrows singed during the learning process (that could be why I was banned from lab in college - "here, hold muh' beaker....").

I sucked at algebra but was pretty good with theoretical geometry (especially where it applied to ballistics). Those visuals helped a lot. ;-]

[2Trievers]

You have outted yourself PsyOp ... I now know you are also posting under the handle sleavelessinseattle. Either that, or you have a long, lost TWIN brother living on the left coast! &;-)

[PsyOp]

Sleavless and I have already concluded that we were sepparated at birth after comparing childhood notes. We seem to share a facination for explosive elements and catapults. Though I have to admit that a few of his experiments make mine pale by comparison (though I did nearly launch a tennis ball into orbit). So Yes, I'm outed. Got a match? ;-]

[2Trievers]

Just as I thought ... I knew you guys were &;-)

[sleavelessinseattle]

I still sit bolt upright in a cold sweat some nights wondering where my flaming hot air drycleaner bags landed...
I'm sort of hurt we never merited a Norad search and destroy overflight for our UFO's...Next time...CROP CIRCLES! FUEL AIR style!8-D

[PsyOp]

"where my flaming hot air drycleaner bags landed... "

Did you check with the Forest Service?

[sleavelessinseattle]

Probably fortunately there are no forests where I was raised...just beans and tomatoes...and a certain golf course water hazard that has six weighted garbage bags full of beer bottles sunk in it from a "Parents away, teens must Party!" Bash to end all bashes complete with airshow...