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The Arecibo message reply

arg-fallbackName="Niocan"/>
Ah, right, I forgot the Russians had the technology to knock out internal systems on missiles within their hanger doors... Silly me. /s
 
arg-fallbackName="scalyblue"/>
If an interstellar spaceship wanted to approach earth, we'd either see it for a very long time as it accelerated to a stop at a very reasonable rate like 1-2g's, or we'd see a massive flareup of infrared that would illuminate the sky brighter than any star in IR as it accelerated to a stop at a breakneck 10+g's

Unless the ship has, like, the thermal mass of a large planet.
 
arg-fallbackName="Niocan"/>
Actually, I was thinking their crafts are based on Gravitomagnetism concepts, artificial gravity wells, and or conciseness itself with technological aid and amplification; With invisibility being achieved by either Electrochromic panels or an unknown conciseness phenomenon. Seeing as how these crafts aren't effected by gravity or inertia as seen by extremely quick acceleration rates and 90 degree turns, etc.

Again, speculation, but at least I try and apply what's known and what can be viable. Your examples and comic-like thoughts are funny, but non-constructive...
 
arg-fallbackName="scalyblue"/>
Niocan said:
Actually, I was thinking their crafts are based on Gravitomagnetism concepts, artificial gravity wells, and or conciseness itself with technological aid and amplification; With invisibility being achieved by either Electrochromic panels or an unknown conciseness phenomenon. Seeing as how these crafts aren't effected by gravity or inertia as seen by extremely quick acceleration rates and 90 degree turns, etc.

Again, speculation, but at least I try and apply what's known and what can be viable. Your examples and comic-like thoughts are funny, but non-constructive...

Gravity is a force. Gravity doesn't do any work. Were an artificial gravity well created, it would do nothing to aid an interstellar ship. Nothing. Unless you think you can stand on a sloop, blow into the sail and make it go, a ship generating its own artificial gravity well would do nothing.
also, any amount of energy sufficient enough to create an artificial gravity well would create a substantial amount of heat. That heat would be detectable.

Were a gravity well ship to come within landing range of earth using its gravity drive, it would cause massive tectonic events on a huge scale. Like, every volcano on the world erupting simultaneously scale.

We would also be able to see it coming from light years away because of the effect of relativistic gravity lensing.

It would also take years to accelerate to a stop, and its acceleration would generate heat.

All electrochromics radiate heat, they would stick out like a sore thumb in space, where that heat has nowhere to go.

Stealth in space is im-poss-ible. Not implausible, not improbable. Impossible. You cannot have stealth in space. None. Zero. Zip. Zilch. Never. Being able to have stealth in space would break every law of physics, as well as ruin the mathematic proofs that are the basis for every field of science. The same reason you can't have stealth in space is the reason why we can have stars and planets and idiots like you. I reiterate, you can't have stealth in space without breaking the universe.

Anything with mass has inertia. If it does not have inertia, it does not have mass. Any mechanism by which you can ignore inertia doesn't actually ignore the inertia, it converts it into heat.\\\

If consciousness were transferable, it would be transferable at c. This would maen that any alien friends on alpha centauri would need to wait four years to transfer here. If they needed help, they would need to wait four years to send for help, and then wait another four years to ask for help back. Tell me how this is effective again?

Anything that does work creates heat. Got that? ANYTHING. You cannot accelerate a ship to or from relativistic speeds without generating a tremendous amount of heat.

Do you know *nothing* about physics?

edit--another point
If a craft is unaffected by gravity, it wouldn't remain in earth's atmosphere, it would be left behind as earth moves along its orbit. If it used its drive systems to stay in earth's atmosphere, it would produce enough heat to cook every living thing on the surface of the planet.
 
arg-fallbackName="Niocan"/>
e2iPi said:
Niocan said:
As I said before, not *all* crop circles are man-made; Though I couldn't find anything on the crop circle makers site dealing with germination rates, node bursts, etc I might have missed it.
Goal posts moved, as expected.

You are completely incorrigible, Niocan.

-1

Edit: fixed quote
I have a hard time believing that *all* crop circles are fake, as it seems there's a distinct difference between flattening the crops with a board and slightly microwaved ground samples with the explosions of water vapor at the joints of the stalk.
My goalposts remain the exact same, it's just that this point wasn't taken into consideration by anyone...

scalyblue, check out the B2 aircraft and why some call it the flying capacitor; It charges the front wingspan positivly and the back exhaust as negative. The aircraft, once taken off, can ride it's own miniature gravity well for an almost unlimited time. Hence, gravitomagnetic propulsion. Or at least that's the ideas behind it.

Edit: I believe the principals are based off of The Biefeld-Brown Effect, but I don't actively look into this much; Take it as thou wilt, etc.
 
arg-fallbackName="scalyblue"/>
Niocan said:
scalyblue, check out the B2 aircraft and why some call it the flying capacitor; It charges the front wingspan positivly and the back exhaust as negative. The aircraft, once taken off, can ride it's own miniature gravity well for an almost unlimited time. Hence, gravitomagnetic propulsion. Or at least that's the ideas behind it.

Edit: I believe the principals are based off of The Biefeld-Brown Effect, but I don't actively look into this much; Take it as thou wilt, etc.

An aircraft has AIR to dump heat into. There is no AIR in space to dump heat into. HEAT is the reason why there will never be such a thing as a stealth spacecraft.

A poor analogy, capacitors generate heat.

The B2 is not propelled by 'gravitomagnetic' propulsion, it's propelled by four of these. It's also not a spacecraft, so it not relevant to the discussion
f118.jpg


The Biefeld-Brown Effect cannot happen in a vacuum. Even if it could, it is an extremely inefficient means of converting energy to work. and --gasp-- GENERATES HEAT.

Care to continue demonstrating your ignorance of physics?
 
arg-fallbackName="UltimateBlasphemer"/>
Sorry to be the Niocan's advocate here.

What if the ship didn't move through space, but space moved around the ship?
 
arg-fallbackName="scalyblue"/>
UltimateBlasphemer said:
Sorry to be the Niocan's advocate here.

What if the ship didn't move through space, but space moved around the ship?

light up every gravimeter on earth like a christmas tree. Would also cause a gravity lens effect. Would also require tremendous amounts of energy to reach relativistic speeds, and an equally tremendous amount of energy to accelerate to a stop. That energy would create heat, and the heat would be radiated and light up IR telescopes like a christmas tree.
 
arg-fallbackName="Master_Ghost_Knight"/>
Niocan said:
My goalposts remain the exact same, it's just that this point wasn't taken into consideration by anyone...

scalyblue, check out the B2 aircraft and why some call it the flying capacitor; It charges the front wingspan positivly and the back exhaust as negative. The aircraft, once taken off, can ride it's own miniature gravity well for an almost unlimited time. Hence, gravitomagnetic propulsion. Or at least that's the ideas behind it.

Edit: I believe the principals are based off of The Biefeld-Brown Effect, but I don't actively look into this much; Take it as thou wilt, etc.

Aerospace engineering is my field, and your claims about the B2 are just ignorant, the B2 is powered by 2 to 4 turbojet engines which are extremely visible on the top of the fuselage:
B2PlanView.jpg

Your claims about physical concepts are also ignorant:
1. There are no devices know to man that are capable of manipulating gravity, and it is also not even know if such a thing is even possible (which most likely isn't).
2. Gravitomagnetism isn't what you think it is, it is not gravity induce by magnetism, in fact no magnetism is involved what so ever. The idea of gravitomagnetism comes from an extrapolated paralel between the similarities of electric forces equation and gravitcal forces equation. The classical gravitcal force between 2 bodies is expressed by the multiplication of the masses of each bodies devided by the distance squared (multiplied by a scale constant), similarly the electrical force between 2 charges is expressed by the multiplication of the elctrical charge of the 2 bodies devided by the distanced squared (very similar). Both the electrical force and gravitical can be expressed in terms of a potential field for which the equations for the forces can be deducted by the gradiant of such potential, but has we have come to know trough Maxwells works magnetism can also be expressed in terms of a potential field that is exactly the same as for the electrical field (being the magnetic force not the gradiant of said field but rather the rotational, NOTE: rotational is a mathematical operation not a rotation in a general sense). Sense electrical and gravitical force had similar mathematical forms and potential, and sense from the electrical potential it naturaly relates the existance of a magnetical intercation (from the rotational of the field) it was sugested that gravity was also susceptible to have a similar phenomena associated to it. And thus the name gravitomagnetism, i.e. an equivalent phenomena as in electromagnetism but this time for gravity. It would be extremely ignorant to confuse gravity with electrical force.
3. It is a fundamental principle of the universe that momentum is preserved, Allways, for the plane to move forward something must move backwards, and also energy must invariably be preserved, there are no exceptions of any kind what so ever, PERIOD.
 
arg-fallbackName="scalyblue"/>
According to Dr. John Schilling, the maximum range a ship with its engines blazing away can be detected with current technology is:
rec.arts.sf.science said:
Rd = ( 17.8E6 * sqrt( Ms*As*Isp*(1-Nd)*(1-Ns) ) ) * (sqrt(0.04 * π))
where:
Rd = maximum detection range (kilometers)
Ms = bogey spacecraft mass (tons)
As = bogey spacecraft acceleration (G)
Isp = bogey drive specific impulse (seconds)
Nd = bogey drive efficiency (0.0 to 1.0)
Ns = bogey "stealth efficiency", i.e. fraction of waste energy which can be magically shielded from enemy detectors. (0.0 to 1.0)
Ï€ = 3.141593...

Considering more advanced propulsion systems, a thousand-ton spacecraft accelerating at 0.001g using ion or plasma thrusters should be visible
at two hundred million kilometers. We can see the Martian space cruisers as soon as they leave orbit. Replace the cruiser with a ten-ton drone, and magically reduce the signature by an additional 99.9% using some unspecified stealth drive, and the detection range is still close to a million kilometers. Those we pick up during their course-correction burns.
 
arg-fallbackName="MRaverz"/>
scalyblue said:
According to Dr. John Schilling, the maximum range a ship with its engines blazing away can be detected with current technology is:
rec.arts.sf.science said:
Rd = ( 17.8E6 * sqrt( Ms*As*Isp*(1-Nd)*(1-Ns) ) ) * (sqrt(0.04 * π))
where:
Rd = maximum detection range (kilometers)
Ms = bogey spacecraft mass (tons)
As = bogey spacecraft acceleration (G)
Isp = bogey drive specific impulse (seconds)
Nd = bogey drive efficiency (0.0 to 1.0)
Ns = bogey "stealth efficiency", i.e. fraction of waste energy which can be magically shielded from enemy detectors. (0.0 to 1.0)
Ï€ = 3.141593...

Considering more advanced propulsion systems, a thousand-ton spacecraft accelerating at 0.001g using ion or plasma thrusters should be visible
at two hundred million kilometers. We can see the Martian space cruisers as soon as they leave orbit. Replace the cruiser with a ten-ton drone, and magically reduce the signature by an additional 99.9% using some unspecified stealth drive, and the detection range is still close to a million kilometers. Those we pick up during their course-correction burns.
I've become such a nerd I get annoyed when people round Pi.

3.1415926 or 3.14159, don't spoil Pi. :D
 
arg-fallbackName="Ozymandyus"/>
Wow, if you believe this I feel truly sorry for you.

Just imagine you are an intelligent species capable of interstellar travel. You are going to trample a bunch of clearly cultivated crops of another species you come across rather than send a message on any frequencies or carve it into rock or do anything that could be clearly identified as contact? Or rather might some guy who wants to lure people and charge them to see his amazing crop circles research some stuff on messages we've sent and make up a response?
 
arg-fallbackName="Gnug215"/>
Ozymandyus said:
Wow, if you believe this I feel truly sorry for you.

Just imagine you are an intelligent species capable of interstellar travel. You are going to trample a bunch of clearly cultivated crops of another species you come across rather than send a message on any frequencies or carve it into rock or do anything that could be clearly identified as contact? Or rather might some guy who wants to lure people and charge them to see his amazing crop circles research some stuff on messages we've sent and make up a response?


Well hey! Maybe the aliens came down here, looked around a bit, saw all the hype about crop circles, and thought to themselves: "Hey, that might be a good idea!"

It could happen! True story.
 
arg-fallbackName="e2iPi"/>
Gnug215 said:
Well hey! Maybe the aliens came down here, looked around a bit, saw all the hype about crop circles, and thought to themselves: "Hey, that might be a good idea!"

It could happen! True story.
Interstellar 4chan? Doing for the lols?
That's as good as any other space alien theory I've heard.

-1
 
arg-fallbackName="Gnug215"/>
e2iPi said:
Gnug215 said:
Well hey! Maybe the aliens came down here, looked around a bit, saw all the hype about crop circles, and thought to themselves: "Hey, that might be a good idea!"

It could happen! True story.
Interstellar 4chan? Doing for the lols?
That's as good as any other space alien theory I've heard.

-1


Either that, or they actually came down and were stupid enough to think doing crop circles would be a good idea!
 
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