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Messages - iznih

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61
Technology, Science & Alt Science / Re: Build-a-ship
« on: August 22, 2009, 04:55:17 PM »


No, you need to put it in because the absolute velocities of the bodies are irrelevant.
When doing the calculations, delta is not needed.
you could as well use
\sum_k (m_k*v_k)=constant
the content is the same as in robo's formula

62
Technology, Science & Alt Science / Re: Build-a-ship
« on: August 21, 2009, 03:52:03 PM »
Because it takes an energy soaked area to make antimatter.

i thought the common way was to shoot x or gamma rays (depending on the particles you want) near normal matter. heat won't do the job as photons in the IR spectrum carry too little energy

Quote
It's a horribly inefficient way to store energy. and you would have to sacrifice them as fuel meaning unless it was awesomely fast, you might as well just use another fuel source like rocket fuel. Or an ion drive.

exactly. the only advantage is that it's a good ratio of energy output vs volume of the fuel/weight 

63
Technology, Science & Alt Science / Re: Build-a-ship
« on: August 21, 2009, 10:58:41 AM »
"Antimatter annihilation creates more energy per mass than anything else.  Way more than nuclear."

true imo as annihilation "transforms" the whole rest mass of the particles into energy. if it was easy to transport antimatter it would indeed be a interesting fuel. but transportation is quite difficult as raist mentioned and creation of antimatter is also a problem as it requires at minimum the exact amount of energy you get by annihilation.

"In order to create antimatter you have to bring an environment up to an extremely high temperature"

that's new to me, why would you need a high temperature?

64
Philosophy, Religion & Society / Re: Subjective Logic
« on: August 21, 2009, 07:26:59 AM »
Thus, I find it hard to believe that our theories give an accurate representation of Nature. They are merely successive approximations to the objective, true nature of the world, but never becoming identical to it. Sort of like the famous argument that 0.(9) = 1, but 0.99...9 < 1. This is why I think that, Logical Rules, as well as any other Law of nature (which is really a Law in our Theory) are essentially product of the human mind and could not exist without it.

agreed

65
Philosophy, Religion & Society / Re: Subjective Logic
« on: August 21, 2009, 06:07:31 AM »
i agree with robo, there are clearly observable patterns and we are able to find fitting mathematical descriptions. the models are made to fit observations. imo it's the same with logic. i think logic is just another model that decribes some basic principles of the universe. if the universe was completely different (illogical if observed from our actual point of view) there would be another logic that fits the observations in that universe. no inhabitant in that universe would understand our universe cause it would seem to be completely illogical.

66
Technology, Science & Alt Science / Re: Fusion
« on: August 19, 2009, 05:22:14 PM »
it's the subatomic vs atomic imo. the addition of the word kinetic would be more correct, too, but it was quite obvious what you wanted to express

67
Flat Earth Debate / Re: A Discussion of Bendy Light
« on: August 19, 2009, 05:18:39 PM »
just thinking, most long distance measurements are made with optical instruments, so to really observe it we would need some sort of apparatus where a light ray is reflected often. so it would travel a long way but you could always see the starting and end point. ofc that would only work if the bending is not dependant on direction but only on travelled time or absolute distance.

68
Flat Earth Debate / Re: Size and Distance of Celestial Bodies
« on: August 18, 2009, 08:12:43 AM »
The reality is that light must bend or be affected in some way as outlined in EAT or AET. If this is true, then the exact nature and size of celestial bodies cannot be known until these theories are fully worked out.

so at least you agree with roundy that the current wording of the faq is not ok

69
Flat Earth Debate / Re: Size and Distance of Celestial Bodies
« on: August 17, 2009, 02:37:01 PM »
He found the angle you would have to look at assuming the size of the object and the distance as given in the prompt. I mean, it's not my place to say how you do things or anything, but I don't get what this proves.

If someone knows the EXACT arc distance of the sun and moon, you could compare the two and revise the size or distance accordingly.

And (for the 3rd time so I don't get bitched at) : I don't know if I'm right.

32 arcmins. (i'm too lazy to convert it to radians  :)) from a fist glance your calculations look good

edit: you beat me to it

70
Flat Earth Debate / Re: Beam Neutrinos
« on: August 12, 2009, 08:34:36 AM »
Why lead? What magical properties does it have to interact with neutrinos better than the atoms of other elements?

high density

71
Technology, Science & Alt Science / Re: A new, simple and good idea.
« on: August 12, 2009, 06:55:30 AM »
 :-\ sorry @ all, completely got that wrong

72
Flat Earth Debate / Re: Shadow Object or Weather System?
« on: August 11, 2009, 12:09:54 PM »
and it would need to take into account that it would have to look different and move faster in the cases we call lunar eclipses compared to the phases

73
Technology, Science & Alt Science / Re: Speed of light and Frequency
« on: August 11, 2009, 04:39:56 AM »
Emmission of photons is not random either.
exactly, distribution of intensity is the same as with scattering


No. Now I know you are just trolling.

Goodbye.

i'm never trolling.
in the case we are talking of the emission is not random on a macroscopic scale. if you look at a single atom the emission is described as the emission of a spherical wave. i admit that's hardly not random cause it covers every possible direction (thought i mentioned that somewhere) and it's a purely statistical thing. but after adding up all contributing factors and all atoms (i don't know how that works and i'm not sure if that's 100% correct) there's only more or less the classical ray + small scattering effects left.
that's why you don't really need the whole qm stuff if you just want to have a mathematical descrption. a classical scattering theory (in our case Raman or Mie scattering) takes into account the wavelenght and the size of the atoms or molecules and arrives at the same result (more or less the same mathematical approach imo but with a classical explanation. classical explanation would be a spherical wave according to the huygens-fresnel-principle. similar to your explanation on why the wave curves when entering the glass)

74
Technology, Science & Alt Science / Re: Speed of light and Frequency
« on: August 10, 2009, 04:43:14 PM »
Emmission of photons is not random either.
exactly, distribution of intensity is the same as with scattering

75
Technology, Science & Alt Science / Re: Speed of light and Frequency
« on: August 10, 2009, 02:28:48 PM »
Because bending occurs when the light hits the glass at different times, meaning each portion of the light is slowed down at a different time.

the theoretical derivation is not that easy but that's the point indeed.
i think our problem is that we discuss a full quantum mechanical explanation of the whole process without actually having it. i doubt anyone in here (me included) would fully understand that anyway. absorption and reemission is the way to go but there's a lot of work left to do till one would arrive at a complete descrption.
one important thing is, that scattering is not random. additional effects like interference play an important role and limit the effects of scattering so that most of the light follows the classical way through the glass. so if scattering is you're only objection i can safely say that it should pose no problem as the effects cancel out to a big extend - this already has been shown by non qm scattering theories. for anything deeper i can't really help as it gets really difficult then.

76
Technology, Science & Alt Science / Re: Speed of light and Frequency
« on: August 10, 2009, 06:01:56 AM »
the effect is small but present, even for very clear glass (obviously it's small then by the very defenition of clear glass). ever seen straight glass fibres in the dark?

77
Flat Earth Debate / Re: Shadow Object or Weather System?
« on: August 10, 2009, 05:19:07 AM »
whoops, missed that in you're first post, sorry.

the only thing that strikes me atm is the fact that it only covers the moon if it's full moon. it might be there all the time or randomly pop up but it's only visible at full moon.
Oh I see, thats an interesting idea - I was assuming the dark portion was the weather system, but if its luminescent it could be the light portion.

Either way, its visible at any time the moon is.

Its cyclical, so I wouldn't say "randomly pops up" either.

so you suggest it's also responsible for the moon's phases?

78
Flat Earth Debate / Re: Shadow Object or Weather System?
« on: August 09, 2009, 06:02:12 PM »
whoops, missed that in you're first post, sorry.

the only thing that strikes me atm is the fact that it only covers the moon if it's full moon. it might be there all the time or randomly pop up but it's only visible at full moon.

79
Flat Earth Debate / Re: Shadow Object or Weather System?
« on: August 09, 2009, 05:51:14 PM »
are we talking of solar or lunar eclipses or both?

80
Technology, Science & Alt Science / Re: Speed of light and Frequency
« on: August 09, 2009, 05:47:30 PM »
Sorry, my fault for not being very specific.
The point im getting at is why would light travel in a straight line through a medium at a slower observed velocity than in a vacuum, if the reason for this is the absorption and almost immediate re-emission of the photons in a random direction.
Wouldn't this create a scattering effect?
in fact every material creates a scattering effect. that's why you're able to see a laser beam from the side if it goes through eg a liquid. the amount of scattering is dependant of the wavelenght and size of the particles. interestingly the distribution of intensity is highly directional - most of the intensity will arrive where you'd expect the ray to leave the material if you assumed a straight line. the math behind these things is very unfunny so don't ask for it :P (in short: you sum up a lot of spherical waves and end up with something non spherical. but again: that's very complicated, people have won nobel prizes for these things)
these thoughts should hold true for absorption and reemission as the mathematical approach seems to be similar so i think huge scattering effects should pose no problem. but another thing i thought of is the time factor: in the literature i had at hand i found no explanation on how long absorption and emission take based on the material and why there are differences regarding different wavelenghts (dispersion).

81
Flat Earth Debate / Re: Telescopes
« on: August 09, 2009, 04:14:44 PM »
the fusion that takes place in stars produces neutrinos as a side effect but imo Redingold is correct on the spectral lines

82
Flat Earth Debate / Re: The world "theory"
« on: August 07, 2009, 11:32:17 AM »
i wouldn't say we know that the earth is flat, i'd say there is some evidence that might point towards a flat earth as there is evidence that points towards a round earth. knowing something (at least for me) implies 100% certainty - that can't be reached by observation of nature - but that's nitpicking. but you agree that if it was possible to prove that there is no conspiracy (i admit that's quite tough cause of the definition of a conspiracy) that would pose a problem for the fet.

83
Flat Earth Debate / Re: The world "theory"
« on: August 07, 2009, 05:11:15 AM »
if i understood correctly, if
flat earth=A,
conspiracy=B
then
A=>B
then logic tells me that this is eqivalent to
!B=>!A

i think that's what markjo said


Here's the problem with this line of logic.  Let's say that a=My cat is black and b=people are afraid of it.  a=>b (ie, people are afraid of my cat because it's black); but it would be nonsensical to reverse that and say that my cat is black because people are afraid of it (or b=>a).  This is exactly the same construct as the Conspiracy argument; we know there's a Conspiracy because we know the Earth is flat, but nobody claims that we know the Earth is flat because we know there is a Conspiracy.  Hence, there's nothing circular about our reasoning.
what you say is correct but that's not what i said. the ! is meant to be a negation. so you say people are scared because your cat is black. if you had no information on the cat but you knew that people were not scared of your cat then the cat could not be black. ofc the implication people scared=>black cat is not true cause it would be circular reasoning.
http://en.wikipedia.org/wiki/Contraposition

84
Flat Earth Debate / Re: The world "theory"
« on: August 06, 2009, 06:09:43 PM »
if i understood correctly, if
flat earth=A,
conspiracy=B
then
A=>B
then logic tells me that this is eqivalent to
!B=>!A

i think that's what markjo said

85
Flat Earth Debate / Re: Scared of the Shadows?
« on: August 05, 2009, 05:20:11 PM »
if you see it that way only a few equations might bear any relation to reality

86
Technology, Science & Alt Science / Re: breaking the law
« on: August 05, 2009, 05:13:25 PM »
yep, it's nicely done and is indeed quite a good visualization of that idea

87
Technology, Science & Alt Science / Re: breaking the law
« on: August 05, 2009, 03:47:04 PM »
ah, that's ok i guess, doesn't seem to contain any ideas that aren't available on the net for free. i think you'll need some additional research on the net anyway as he seems to only present conclusions but no actual experiments.

88
Technology, Science & Alt Science / Re: breaking the law
« on: August 05, 2009, 03:11:24 PM »
did you read that book?

89
Flat Earth Debate / Re: Scared of the Shadows?
« on: August 04, 2009, 03:47:03 PM »
wilmore, i get your point and i'm inclined to agree. a finalized model of a fe might take squat's points into account and provide a solution. that also means that every discussion here can't do more than a ruling out or verifying of certain aspects, never of the whole model.
i'm not on your side concerning approximations in mathematical approaches. i feel that at some point a fe model will face the same problems, but without taking this any further i think we'll agree to disagree on validity of such approximations.

90
Flat Earth Debate / Re: Scared of the Shadows?
« on: August 04, 2009, 07:26:22 AM »
i don't mind quoting authorities, you can't be an expert on everything.
the fact that 3 body problems are not analytically solvable is obvious and was never disputed. what is not understood is the impact of a set of initial conditions on the numerical solution of the problem as it classifies as nonlinear (chaotic) movement. the initial conditions are the measurements that have to be made no matter if it's an analytical or a numerical solution and as the numerical solutions fit further observation there's no reason to dismiss them, no matter if you fully understood them or not. btw you may as well dismiss the complete atom physics that goes further than the hydrogen atom if you don't like approximations

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