Everything posted by swansont
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Universality , Equality of Matter and Constant Bang !
Yes, I have. That is a factual statement. Did you have a point to make?
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Universality , Equality of Matter and Constant Bang !
The hypothesis has no apparent founding in physics and amounts to gibberish, so no. I can't even come close, especially since I am not willing to enter into an altered state of reality as I might have done in my college days. Though I can appreciate that if one is zonked enough this might start to seem to make sense.
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Universality , Equality of Matter and Constant Bang !
And yet, after that somewhat long post, we're still waiting.
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If I can imagine it, it is possible!
Then it wasn't impossible, was it?
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Banned/Suspended Users
kristalris has been banned for apparently being unable to post without bringing up discussion topics that have been closed for other rules violations, and not learning from his prior suspension.
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The Official "Introduce Yourself" Thread
Allegedly, but that's hearsay. You can't use that in court.
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The Official "Introduce Yourself" Thread
I work at the Naval Observatory — you can't swing a dead cat around here without hitting an oceanographer (or astronomer).
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Universality , Equality of Matter and Constant Bang !
"Believable", in science, means you have made predictions that can be experimentally confirmed. A model means you can make these kinds of predictions. So far I don't see either, and you need to do this.
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Comments on Moderation
Periodic reminder: complaining about being compelled to follow the rules is not going to gain any traction with the staff, and people challenging your pet theory is not a rules violation. It's actually what one should expect.
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Banned/Suspended Users
d3mo has been banned as a sockpuppet account of z3rg/dochow. This was not to evade a suspension/ban, so the original account is intact…for the moment.
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Banned/Suspended Users
Lucious has been banned as a sockpuppet of Aethelwulf, graviphoton, TrappedLight, Tom Vose, Tsadi and possibly others. So many bodies.
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Banned/Suspended Users
ALex7JA has been terminated by his request.
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Banned/Suspended Users
Jaya Jagannath has been banned for persistent soapboxing and spamming with the same material, after being told not to. Multiple times.
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Banned/Suspended Users
Vexen has been suspended for an abusive behavior meltdown. S/he may return after a nap and a snack.
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What would you change about the new SFN?
I don't think I've ever typed "logical falisy" in my life. Regardless, what has prevented you from asking about logical fallacies, or Googling them to learn about them?
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What would you change about the new SFN?
The mods are not elected officials, and the membership does not get to vote on issues. It's more like someone's house, and you can drop in for a visit and have a discussion. There are rules they wish you to follow, and are welcome if you can engage in civil discourse. If you show up (or become) drunk and disruptive you will be shown the door. If you try and peddle wares, want to give us a copy of the Watchtower (or equivalent) or are trying to siphon folks to a discussion down the street, or expose yourself, you will be booted off the porch. You don't set the rules, the owners/caretakers of the house do. It's private property. You leap from "not a democracy" straight to Godwin. Seriously? No middle ground? Do you expect a family (especially with 3 or more kids) to be a democracy? "Let's vote: who wants ice cream for dinner?" We generally don't have families run like that, so this like like Oprah — YOU are Hitler, and YOU are Hitler, and YOU are Hitler, and YOU are Hitler! Bull. But that's an actual scientific discussion, and not so much support/comments. Go ahead and bring it up in its own thread and watch it be dismantled.
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What would you change about the new SFN?
This isn't a democracy.
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Comments on Moderation
Time for the periodic reminder that disagreement is not a personal attack, and that pointing out where you are wrong is not ad hominem.
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Block at half its final speed
Or use the same equation. 1/2 vf = sqrt(2aL)/2, as you say. So put that into the equation v2 = 2ax (v0 is still 0)and solve for x 2aL/4 = 2ax x = L/4 Intuitively you might expect this, in terms of potential and kinetic energy. An object that doubles its speed has 4x the energy, so it has to travel 4x as far.
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Block at half its final speed
No, you aren't. v0 isn't 1/2v, since it starts at rest. v0 = 0 But you could use that equation to determine the speed at L, and then solve for half that speed. Using v0 = 0, the equation becomes vf2 = 2ax
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Banned/Suspended Users
yemtu has been banned as another joshgreen sockpuppet
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Guidelines for Participating in Speculations Discussions
The speculations forum draws a fair amount of lively discussion. Here are some guidelines for ALL participants. The official rules regarding the Speculations forum The Speculations forum is provided for those who like to hypothesize new ideas in science. To enrich our discussions above the level of Wild Ass Guesswork (WAG) and give as much meaning as possible to such speculations, we do have some special rules to follow: Speculations must be backed up by evidence or some sort of proof. If your speculation is untestable, or you don't give us evidence (or a prediction that is testable), your thread will be moved to the Trash Can. If you expect any scientific input, you need to provide a case that science can measure. Be civil. As wrong as someone might be, there is no reason to insult them, and there's no reason to get angry if someone points out the flaws in your theory, either. Keep it in the Speculations forum. Don't try to use your pet theory to answer questions in the mainstream science forums, and don't hijack other threads to advertise your new theory. The movement of a thread into (or out of) Speculations is ultimately at the discretion of moderators, and will be determined on a case by case basis. For those of you who are posting here: this is a science forum, and speculations are still to be discussed in that context. If it doesn't fit as a science discussion, or you refuse to discuss the idea as such, the thread will be closed down. 1. If you are presenting some new conjecture and insisting that it is correct, or are objecting to some mainstream theory, you need to back up your position and will be expected to do so. It's a far better approach to ask questions if it's a matter of not understanding how some scientific principle works. Once you insist your idea is right (or some other idea is wrong) the burden of proof is on you, so expect to be challenged and to defend your idea. Some kind of scientific model, comparison with evidence, specific predictions or other ways of falsifying your idea are a MUST. Consider the first question you must address as "How could this be tested to ensure that it's true?" That's what a model does it allows one to predict outcomes under specific conditions so that they can be compared with experiment. - A model is often an equation or set of equations, so that one can predict some measurable outcome under a set of measurable conditions. V = IR is a simple model in electricity. All of the terms represent something physically measurable. Systematically choosing two of the variables allows you predict the third one, which can be compared with the measurement. - evidence means scientific evidence, i.e. it is objective and specific, and to be useful, it has to differentiate your idea from any existing model. Anecdotes don't count, and logic without a physical experiment this includes thought experiment is insufficient (though these can be used to make predictions) 2. Huge "walls of text" are usually difficult to get through and discourage participation. Present an abstract — a distillation of your idea first. Get into the details afterwards. It has to be posted here, though. Simply linking to an outside site for text or video is not sufficient, and against the rules. 3. Specific predictions often require math. Do not expect others to do your math for you, nor should you consider the math to be a trivial and therefore unimportant part of your conjecture it's usually crucial. e.g. a vague explanation that something will get hot would not separate your idea from some other idea. Predicting a temperature dependence on certain conditions would allow for that. In cases where math may not be required, you still need to be able to make predictions that distinguish your idea from existing theories, e.g. predicting some result where mainstream theory predicts nothing happens, or some other clear distinction. If you can't do this, it's a sign you need a more detailed model. 4. It's a good idea to explain what new ground you're covering if it's a new hypothesis, what problem with the mainstream theory does this new idea solve? If it's a critique, clearly explain the alleged shortcoming(s) of the existing theory. To do this properly you need to be familiar with the area of science into which your idea would fit, or the material you are critiquing. You must also know the terminology. You can't effectively communicate if you are using different definitions than everyone else, or making up nomenclature for things where it already exists. The dictionary is not a good substitute for a science textbook, because science uses specific definitions. 5. You can't ignore criticism of your idea. When someone points out where a prediction fails to match experiment or some other sticking point, you need to address the issue. This is a two-way discussion, not a lecture. It doesn't matter if your idea appears explain one phenomenon if it fails elsewhere that it's expected to work. 6. If your post was moved to speculations and you want know why, read this. To all of those responding to Speculations posts: Remember that non-participation is always an option. If you have nothing constructive to add to the conversation, please stay out of it. Posts that simply state "word salad" add no value. Accusations of trolling or crackpottery, or other snide remarks, are similarly devoid of useful content, and depending on how you phrase the post, can be considered personal attacks. Focus on pushing the thread in the direction of science rather than creating noise. If your post is only adding noise, it may be hidden. Responses should be in terms of accepted science, not your own personal theory. Don't use the post to raise independent questions of your own those belong in a new thread. All conversation should be addressing the original concept, or correcting/clarifying responses to that. ==== Discussion of these points can take place here
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What are you reading?
I just finished "Devil in the Grove" by Gilbert King, and won the 2013 Pulitzer for nonfiction. It's about racism and justice (or lack thereof) in the south, just after WWII, and recounts the NAACP's Legal Defense Fund's involvement, with a large dose of Thurgood Marshall's career up through that point, as well. Excellent book — a very compelling read. (Gilbert King was a high school classmate of mine, and if you told me someone from our class would eventually win a Pulitzer he wouldn't have been particularly high on the list of my guesses. A good example of people hitting their stride later on in life, and how high school is not necessarily a good predictor of one's future)
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Banned/Suspended Users
barfbag has been banned for his apparent inability to post without insulting people nor follow moderator direction to not respond to moderator notes.
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Banned/Suspended Users
Upon further review, joshgreen's seat has been upgraded to permanent ban.