09-29-2013 03:39 PM
#226
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09-29-2013 03:45 PM
#227
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The Prince Rupert drop video is effing awesome | |
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09-29-2013 04:07 PM
#228
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the majority of the genetic differences between humans and chimps are olfactory |
09-29-2013 04:43 PM
#229
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09-29-2013 05:01 PM
#230
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09-29-2013 05:42 PM
#231
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09-29-2013 05:52 PM
#232
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09-29-2013 06:44 PM
#233
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OK, this is news to me. It does seem as though some preliminary verifications are coming in. No one has a physical model for the process yet, so that's interesting. | |
09-29-2013 06:55 PM
#234
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Pretty sure it's bunk. If not, it would be huge news, which it has been many times in the past, only to be found bunk. The inventor being shady voids all credibility, and there are loads of false claims in research |
09-29-2013 10:11 PM
#235
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Aren't tokamaks a real thing though? | |
09-29-2013 10:35 PM
#236
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Oh yes. There are dozens of them... well more than 2 dozen, at least. There's one in the UK at Culham Science Centre in Oxfordshire, for the UK crowd in the audience. | |
09-29-2013 11:11 PM
#237
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09-30-2013 12:16 AM
#238
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Well... I wouldn't say, "accidentally"... more like "hopefully". It would give us the chance to observe Hawking Radiation and award a Nobel before he dies. | |
10-19-2013 08:10 PM
#239
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I found this one. Short and sweet. | |
10-21-2013 06:37 PM
#240
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http://www.youtube.com/watch?v=ph8xusY3GTM this is pretty cool too. Cooling water below freezing point and keeping it a liquid, and then causing it to freeze in seconds. | |
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10-31-2013 08:04 PM
#241
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10-31-2013 09:02 PM
#242
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Just a quick note for those of you who're interested in the Higgs Boson. | |
11-08-2013 06:59 PM
#243
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Some physics news. Apparently their gonna hit a ball with some light and wrap physics up. | |
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12-07-2013 03:26 AM
#244
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Why is the sky blue? | |
12-07-2013 06:22 AM
#245
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Can you answer this one? | |
Last edited by seven-deuce; 12-07-2013 at 06:28 AM.
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12-07-2013 04:28 PM
#246
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Is it true that everything is radioactive? | |
12-07-2013 04:34 PM
#247
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2 cameras on tripods. All you need is 1 camera, but it takes a lot longer to shoot it all. The tripod is mandatory. | |
12-07-2013 04:42 PM
#248
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currently reading this. http://www.reddit.com/r/science/comm..._wormhole_mit/ |
12-07-2013 05:08 PM
#249
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That looks like a pretty good discussion, but I didn't read too much of it. You should read up on the "EPR paradox" to get an overview of what Quantum Entanglement is. I wrote a paper about it, so I can go on at length about EPR if you're curious. | |
12-07-2013 05:14 PM
#250
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This is mainly the area I'm looking for clarification on. If string theory doesn't predict anything that isn't also predicted by the standard model, then how is it distinguishable from the standard model? If not, doesn't this make string theory the god of the gaps, where it kinda just makes stuff up about what can't be known? |
12-07-2013 05:33 PM
#251
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First of all, there are many string theories, not just 1. Different theoreticians are taking different assumptions about the properties of the strings. | |
12-07-2013 05:45 PM
#252
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How does it do this without making predictions? |
12-07-2013 07:47 PM
#253
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This is sticky, I know. String theories do make predictions. | |
12-07-2013 08:30 PM
#254
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So is it true that all string theories so far have not been able to explain the current standard model without also positing things that are known to be false? Or have some created a framework that explains everything but isn't testable so there's no way to know? If not, what's the furthest that a theory has gotten? Like has there been unity of the four forces but only in an unfalsifiable way? Or has every unity of the forces done things like posit additional unknown forces? |
12-07-2013 08:49 PM
#255
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I'll wait for MMMs answer as far as the physics goes, but as an interesting tangent: | |
12-07-2013 08:57 PM
#256
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12-07-2013 09:14 PM
#257
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My best answer to that would be, that physics doesn't have a single proof of anything in it. Physics concerns itself with making theories about nature then comparing the predictions of those theories with observation, if a theory makes predictions that agree closely with observation, the best we can do is say that the theory is an accurate model of nature, but we can't prove anything, and to get a little philosophical we can't say what nature "is". | |
12-07-2013 09:57 PM
#258
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Some string theories make predictions that are known to be false. E.g. if it predicted that an electron should have a mass of a star, that would clearly be a poor description. Most make predictions that are unable to be determined as true or false. | |
12-07-2013 10:05 PM
#259
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Just shoot me over the whole saying science isn't concerned with true and false and using the words true and false over and over ITT. | |
12-07-2013 10:09 PM
#260
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Thanks for the responses. It's just fascinating to me that physicists have such trouble unifying gravity with the other three forces. I mean, it doesn't fascinate me that a theory of everything might not exist, as I think the ultimate state of truth is also a state of non-truth, but being unable to unify the forces seems a strange thing to not be able to do |
12-07-2013 10:11 PM
#261
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A long time ago I was raked over the coals by somebody smarter than me who did his best to explain why nothing can be truly known: the foundation is always an assumption. Even if it works every time it's observed, because information isn't 100%, it's still an assumption |
12-08-2013 02:22 AM
#262
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I don't think that's what the Godel's Incompleteness Theories say about physics. | |
12-08-2013 09:09 AM
#263
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Yes I wasn't trying to imply that GIT had anything to say about physics. What I was mainly saying was, physics doesn't concern itself with rigorous proof. | |
Last edited by BorisTheSpider; 12-08-2013 at 09:13 AM. | |
12-08-2013 03:30 PM
#264
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12-08-2013 05:33 PM
#265
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12-08-2013 08:04 PM
#266
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Quantum Tunneling is an excellently non-intuitive discovery of Quantum Mechanics. The fusion in the sun wouldn't happen at the temperature that it does if not for proton-on-proton tunneling. There's a few steps in the chain, and more than one chain, but they begin with tunneling. | |
12-10-2013 03:22 PM
#267
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If the radius of a pizza is z, and the height of the pizza is a, | |
12-10-2013 06:11 PM
#268
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right... pi(r)^2(h). what's so amazing about that? | |
12-10-2013 06:33 PM
#269
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12-10-2013 06:37 PM
#270
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That's the type of shit that puts kids off physics. |
12-10-2013 07:30 PM
#271
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It's a post like this that makes it so so easy read everything you write as the voice of a petulant teenager. | |
12-10-2013 07:57 PM
#272
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What's the probabillity that MMM takes a joke poking fun at him to heart? |
12-11-2013 02:38 AM
#273
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oh it was a joke | |
12-11-2013 02:39 AM
#274
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joke thred down the hall | |
12-11-2013 11:34 AM
#275
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How did you develop your skills as a good physics explainer person? I actually has a phd in physics, and I know and can explain a fair number of things itt, but you do an outstanding job on a lot of topics that aren't typically covered in the standard curriculum. Cheers! | |
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12-11-2013 01:45 PM
#276
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til a phd in beards that banged ur gf isnt the only one kingnat has |
12-11-2013 02:23 PM
#277
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[sarcasm] | |
Last edited by MadMojoMonkey; 12-11-2013 at 02:25 PM. | |
12-11-2013 04:40 PM
#278
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because black holes consume everything and get their consumption powers based on how much they consume, doesn't that mean they eventually consume everything? |
12-11-2013 05:52 PM
#279
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I delved into black holes a bit in this post, and I feel like you might find some interesting and relevant info there. | |
Last edited by MadMojoMonkey; 12-11-2013 at 09:16 PM. | |
12-11-2013 09:24 PM
#280
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12-11-2013 09:35 PM
#281
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I think this is true as well. I also, probably more than most people, am very comfortable admitting when I don't know something. I use this to balance my need for actually learning all the nuance to challenging questions, if that makes sense. I know some of things pretty well, and I probably know enough to satisfy most standard questions, but a few of the typical trolling physics questions take some thought, and I always feel imposter-y when i can't figure them out instantly. | |
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12-11-2013 10:22 PM
#282
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I'd love to see a back-of-the-envelope-type calculation for this: http://www.viralnova.com/backyard-igloo/ that gives me reasonable confidence that something this size, with blocks this small has a very low chance of failure. | |
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12-11-2013 10:29 PM
#283
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12-11-2013 11:34 PM
#284
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A dome is an incredibly stable structure, allowing for a lot of tolerance in deviation from the ideal shape. | |
12-12-2013 01:22 AM
#285
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Not sure if physics question, but not sober: | |
12-12-2013 12:01 PM
#286
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I don't know. It sure feels like free will, whatever it is. | |
12-12-2013 02:59 PM
#287
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The best answer I can come up with to the free will thing is that it doesn't matter what the answer is and it's probably an unsound question, sorta like asking what the internet was like before the internet existed. |
12-13-2013 04:48 PM
#288
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A great motivator for anyone getting a whiff of what MMM is cooking and thinking they might want to dive in. | |
Last edited by a500lbgorilla; 12-13-2013 at 04:54 PM. | |
12-13-2013 05:36 PM
#289
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Excellent article. This bit resonates with me: | |
12-13-2013 09:29 PM
#290
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Article is kinda strange to me. I guess around here "not being a math person" is something we impose on ourselves, not something we're told by teachers |
12-13-2013 09:46 PM
#291
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I don't know what you're asking. | |
12-13-2013 09:50 PM
#292
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That's what I'm saying. I've seen lots of people claim they're bad at math, but I've not seen many people claim others can't get good at math. In the article, she claims that she got a lot of pressure from others that she shouldn't be doing math |
12-13-2013 10:25 PM
#293
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Because you're not a woman. |
12-13-2013 10:38 PM
#294
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hmmm the sexist answer is likely. maybe not for where i live -- this is one of the most anti-sexist regions in the world -- but for some place like arizona -- where the author says she's from -- it could easily be the deciding factor |
12-14-2013 11:06 AM
#295
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That's pretty much the story of most skills. If you can grab at that spark of motivation and keep those embers lit, you can go very far. | |
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12-14-2013 01:21 PM
#296
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dude used to put dianabol in his cereal |
01-13-2014 04:50 PM
#297
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01-13-2014 04:57 PM
#298
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Grunching so sorry if something similar has been asked. | |
01-14-2014 12:12 PM
#299
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I sprained my left wrist yesterday when I came across some motherfucker hitting a woman. I tackled/punched him and landed on my wrist. I can only type with one hand right now, so I'll answer this question more deeply in a couple of days. | |
01-14-2014 12:24 PM
#300
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I feel compelled to point out that an "igloo" is a cartoon invention, as far as I can tell. I would LOVE to see a link to any indigenous people using an igloo as a normal part of their daily lives. I found lots of variations on the practice of making a temporary shelter out of ice/snow, but none of them are what I'd consider an igloo. | |