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Everything posted by Strange
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It should do. Basically it converts the fats into a water soluble form (soap) which should then wash away. It is commonly used for this sort of thing. I guess the problem could be if you dump it in too quickly and there is a solid mass in the pipe that then gets hot. If you add it slowly so it dissolves (the heat should stir it naturally) it should be OK. If you buy a product intended for this purpose then it should have instructions on use. My hardware shop also sells concentrated acid (sulphuric, I think, or maybe hydrochloric) for clearing blocked drains. But I am always a bit worried about the effect on the cement, with that. Make sure you wear gloves and eye protection in case of splashes.
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A bridge between physical and computer world
Strange replied to fredreload's topic in Computer Science
Never mind. Other people will do it for you! But you could miss out on all the fun! I get the impression you are quite young - and you are certainly enthusiastic. There are going to be some exciting developments in engineering if you get involved (although might have to learn to focus a bit more... instead of jumping all over the place with your ideas). -
A bridge between physical and computer world
Strange replied to fredreload's topic in Computer Science
As that video shows, genetic algorithms can't be utilised for real-time responses; they take hundreds or thousands of generations to come up with an effective algorithm. However, both neutral networks and genetic algorithms are used in robotics, so not quite sure what the question is ... -
I perceive that you mean affected. For someone who wants to define laws, you seem to introduce some rather arbitrary distinctions. Why is perception affected more by gravity or time than distance? We perceive gravity in many ways: the fact that things fall to the ground, our weight, our vestibular system and sense of balance. But we also perceive distance in many ways: stereoscopic vision, geometric perspective, aerial perspective, time delay (of sounds), and so on. These are all important for us building our model of the world around us. On the other hand, our perception of time is limited and very subjective.
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Yep. It is quite hard to argue that anything is detected directly!
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Nonsense. There are dozens, maybe hundreds, of studies showing that lower vaccination rates cause higher rates of disease. You appear to be questioning the validity of herd immunity.
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No, just trying to give you a (non-technical) idea of what a dimension is: a degree of freedom. Your questions about whether the "substance of space" could be an extra dimension are meaningless.
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Nonsense. When vacation levels drop, there are large increases in disease. Here is just the first search result of many: http://www.cidrap.umn.edu/news-perspective/2016/03/study-relates-vaccine-refusal-rise-measles-pertussis Is this whole thread a dishonest anti-vaccination thing?
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It doesn't say that at all. You might be interested in this, a VR trip into a black hole: https://www.quantamagazine.org/plunge-into-a-virtual-reality-black-hole-20171204/
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Boundaries maybe. Rules, definitely not.
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Fascinating.
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Who's your friend?
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Oh, for sure. But people who "hear voices" (e.g. with schizophrenia) do hear them as real external sounds, even though they originate in the mind.
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I can't even imagine the sound but I think I am close to being aphantasic (we might have had a thread on that in the past) which gets mentioned in the Twitter thread.
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Do you hear anything? I don't. Maybe I'll see if I can add a poll...
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Another blog post about this paper: http://backreaction.blogspot.co.uk/2017/11/astrophysicist-discovers-yet-another.html Maeder himself posts some comments below the article.
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Do they? I have heard a lot of accounts of people acting rationally, helping others, etc. I'm sure, given the variety in humans, there are people who will flee and others who will stay to help others. I doubt there are many who will be completely chilled out by an unfolding emergency. Although, when I was training as a fire warden, we were shown a video of a major fie at a football stadium - as everybody rushed to escape as the flames spread and the structure was collapsing, one father just sat there calmly with his son. When everyone else had left, they got up and strolled casually out.
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Pictures or it didn't happen!
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Although the Twitter poll is possibly self-selecting, it seems a lot of people can hear sounds that aren't there. Maybe related to synaesthesia? http://www.bbc.co.uk/news/science-environment-42237092 "the dilemma being discussed online is whether you can hear anything in this silent animation of skipping pylons:"
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Not at all. I have no idea why you would think that. People with "personal theories" base don belief rather than evidence always seem to think they are frightening people or making them angry with their "dangerous new ideas". The which the only response is: pfffft. But we aren't talking about a "given frame of reference", we are talking about a hypothetical creation event. So that argument doesn't apply. You need to read up on the difficulty of applying that "law" to the whole universe as described by GR. But, then again, the net energy of the universe could be zero so no energy was created. The zero energy hypothesis. It isn't now. But it would have been before. I don't know much about Kaku, but the little I have seen of his popular science writings should be ignored as sensationalistic nonsense. You have no evidence for this beyond your personal beliefs. Not a good basis for science. Therefore the universe doesn't exist? You really need to sharpen up your critical thinking skills. Honestly, it is not "getting hot under the collar" to point out the enormous benefits of studying logic, rather than just saying that if you belief something then it is "logical". Common sense is the enemy of science and rational thought in general.
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Nope. It might, by chance, be consistent with logic but it isn't logic. That is like saying "an opinion can be arithmetic". We have zero evidence that the universe came from nothing. And no evidence it didn't. All we know is that it was once in a hot dense state. We don't know how that came about or how long it lasted. No. It appears to be a premise of your argument. If you start with that as an assumption then you can conclude that the universe didn't come from nothing. This is the logical fallacy of begging the question. (Which you would know if you knew what logic was...) https://www.logicallyfallacious.com/tools/lp/Bo/LogicalFallacies/53/Begging-the-Question I suggest taking an introductory course in logic and/or philosophy. Science is always (potentially) wrong. That is how it works. I don't think that science says that you cannot create energy. That doesn't invalidate the universe being created from nothing (there are many possible reasons why; you have been given one which you have just ignored) There zero evidence that the universe was created anyway. So the whole question is moot.
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Sorry, that is not how logic works. An opinion is not logic. It can be proved, using logic, that this is not the case. It is not just an opinion.
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I would ignore most of it (creating a Class to calculate a single function: stupid overkill). If you know nothing about programming, then you have quite a challenge. Start by finding some tutorials online to learn the basics. All you need to do is learn how to write a function (a "sub-program" that calculates a value for you) and print the result. I would choose a language like Python which is interactive and allows you to try things out quickly. You don't need to get to grips with compilers or any of that nonsense. Once you are comfortable with the basics (write a program with a function to calculate the square of a number, for example) then you can translate the "ackerman" function from his example into Python (or whatever you choose to use).
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Well, one possibility is that the net energy of the universe is zero. https://en.wikipedia.org/wiki/Zero-energy_universe