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Everything posted by ACG52
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This has nothing to due with quantum theory, and should be in speculations.
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Bear in mind that although the gravitational field of a BH is incredibly powerful, it falls off rapidly with distance. The only dark matter which would be swallowed by a BH is the DM which is in it's immediate vicinity, just like only matter in the immmediate vicinity of the BH is sucked in. And since DM interacts gravitationally, there's no reason to think that it isn't. It's just not that much.
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Because the equations for energy require a velocity squared. A unit of energy is the joule, and the joule's units are kg * m2/sec2. To make the units come out correctly you must square velocity.
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Light, Observable Universe, Finite or infinite
ACG52 replied to Tom B's topic in Astronomy and Cosmology
No, the age of the universe is based upon both observation and calculation. No, there is no center of the universe. The BB was not an expolsion of matter and energy moving in all directions from a central point. The BB was the expansion of space, occuring at every point in space. So at every point in space, you would see everything moving away from you, and the further something was, the more space was being created between it and you, so the faster it would appear to be receeding. No, as I explained above, there is no center. And the CMB is everywhere, equally, throughout space. So when you train your microwave detector out into space, you are receiving photons which are 13.7 billion years (-380000 years) old, but they are not that far away. They are right here, running into your microwave detector. That's exactly what happened. At the time of the photon decoupling the photons were very hot, and have cooled to 2.73 K and stretched to microwave lengths. This is not the energy everything was created from, these are just the photons which were suddenly free to travel forever through expanding space. Our observable universe is 13.7 billion light years in any direction. And anything we see that we measure as 13.7 billion lys away is actually at present 48 billion lys away (space has been expanding while the light has been getting to us). Beyond that we can't see, but theory does say that the actual universe is far larger than our observable one. Infinite? Maybe. At least into the future. Maybe. We wouldn't have had time to see these galaxies though. Remember that there is no region of the microwave background radiation. It is equally everywhere, to 1 part in 100,000. There are about 400 million photons of the CMB in every cubic meter of space, including your body. See above answers. You are now leaving the realm of cosmology and entering that of Relativity. It's Maxwell's electromagnetic equations which says that the speed of light is fixed and constant. Einstein incorporated this into Special Relativity gave us space/time, time dilation and length contraction. Nah. -
No, the light is moving in the direction of the space craft at c. This is what it is measured to be in any inertial frame, regardless of it's relative motion.
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Nothing in the preceeding post has anything to do with the subject of the thread. It's just meaningless word salad.
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I don't know what documentary you were watching, but if that's what they said, you might want to change the channel.
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c squared is not a speed. meters2 per sec2 is not a velocity. It is a constant.
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Except that the CMB has a perfect black body spectrum, which was exactly predicted by the BB theory. When the original COBE data was released, it exactly followed the predicted values, and the error bars were dots. The 'voids' you reference are areas which are colder by 1 part in one hundred thousand.
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But speed is distance (or cycles) divided by time. So you can't get time out of the picture.
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Flying cars, will it ever truly happen (Terrafugia coming)
ACG52 replied to Borg09's topic in Science News
I hope not. People have a hard enough time dealing with two dimensions. Give them three to deal with and we'll have large hunks of metal falling on our heads. -
How do scientist measure the center of mass for a rock?
ACG52 replied to The Architekt's topic in Physics
Ok kid. You're not going to get very far with that attitude. You keep saying 'I don't understand science yet', but you don't seem to want to learn. Which has nothing to do with science. -
And your reply is to simply paste together your previous posts? Nut indeed.
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How do scientist measure the center of mass for a rock?
ACG52 replied to The Architekt's topic in Physics
And where did you come up with this piece of nonsense? -
How do scientist measure the center of mass for a rock?
ACG52 replied to The Architekt's topic in Physics
I think the problem is that your questions aren't making much sense. I think you're using the wrong terminology when trying to discuss your idea. It would also help if you stopped with the different font sizes and different colors. They add nothing to the readability of your posts. -
I think it's nonsensical woo which has no relationship to physical reality.
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Only things that are at least 200 million lys from us. Closer than that things are gravitationally bound. That's why Andromeda can approach the Milky Way.
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Best Books On Dimensional Analysis Please....
ACG52 replied to The Architekt's topic in Quantum Theory
Start with finding out what dimensional analysis is. http://en.wikipedia.org/wiki/Dimensional_analysis -
No, because "a rate considered statistically insignificant" does not mean 'it's so small we don't have to pay attention'. It means there's no valid result, i.e. they found no expansion.
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From a joint NASA/JPL study released in August of last year. http://www.jpl.nasa....elease=2011-254
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You really seem to know absolutely nothing about cosmology, astronomy, or physics in general. I am quite suspect of your claim to be an electrical engineer. If it's true, it's a condemnation of the science curriculum at whatever institution you attended.
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Yes, because you don't understand the physics involved. A Master of ARTS?