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Mass appears to attract other mass, irrespective of position or orientation. That is, gravity is attractive no matter what. Contrast that with electrostatic forces which could attract or repel depending on the charges involved, or a voltage between two metal plates which has a specifically directional force on electron... | 1 |
There's a word, I think that starts with a 'p', that describes doing something to solve a situation before it happens. For example, if a hurricane is approaching a store might take __ action to prepare for the flood of people that might come. In a fictional world, an organization might take __ action against crime base... | 1 |
I'm looking for a word that is used quite often to mean something that feels real like you can reach out and grab it. Like it has substance. It's used most often around me to refer to user interface or game design. Like when a UI has weight and feels like it has substance behind it you say it's ............... I origin... | 1 |
As the title indicates, I'm trying to find books where the exposition of the main course of thought is done entirely or mostly in outlines of proofs, or as exercises with or without hints. I'm trying to force my reading to be more "active", and I think that such a book would be good training-wheels. No particular topic... | 1 |
I just finished reading (and understanding) Steiner's proof of the isoperimetric inequality. His proof (which is sadly incomplete) seems to rely much on the fact Steiner symmetrization preserves area and decreases perimeter. The only resource I've found which provides proof of those two things are Andrejs Treibergs' be... | 1 |
Person A says to B: "I thought you were smarter/stronger/better/more trustworthy than that. I should have known better." I was thinking it would be termed passive aggressive, but after reading up on it, that doesn't seem right. I'm tripped up on how focused on the Person A the two sentences are. Typically an insult wou... | 1 |
I have been using Windedt with Texlive since many days. But I stopped using it for a while, and when I now compile a tex file, its giving error "The system cannot find the file specified". I don't know wats wrong. I have used this before. I tried re-installing Winedt, no use. I have recently changed the System Path for... | 1 |
Please have a look at these two definitions: Chevalley-Eilenberg complex Koszul complex (German Wikipedia) Both are from Wikipedia pages on Lie algebra cohomology, and they look rather similar. Since I'm not very solid on the notation, I'm unsure about what's the difference between them. Furthermore, since both Wiki pa... | 1 |
Does a definition need to provide a unique or near-unique description or can non-unique descriptions also be categorized as definitions? For example: Is the statement "An apple is a fruit" a definition of apple? Is the statement "A car is something that gets people from place to place" a definition of car? Are these si... | 1 |
I've got a sci-fi based Physics question that involved Dark Energy... So I've been watching a lot of Doctor Who recently, and I'm very interested on how his "Tardis" is bigger on the inside. Here you can see the Tardis looks small on the outside. But inside, it's much bigger. So here is what I've been thinking. What if... | 1 |
Just as the title says: is there a formal name for a convex polygon on a sphere, of which the vertices are connected not by great circle but by small circle segments? My end goal is to intersect two (or more) of such shapes, and find the area of the shape where the two small-circle polygons overlap. It would therefore ... | 1 |
I'm trying to get the facts straight here. Suppose I'm throwing a ball with no angular momentum. It collides with the ground and Newton's third law tells us that a force opposite to the gravity will be applied to the ball at collision. During collision, the momentum will be converted to potential energy and then become... | 1 |
It's just a casual observation, so I wanted to check it: A regular spring, when not completely compressed, looks an awful lot like a sine wave. The idea of a circular shape stretched out in the third dimension also seems to support it. But I can find no mention anywhere that such a spring actually is (or isn't) shapes ... | 1 |
I want to read particularly about diophantine Analysis and Elementary Number Theory from a novice level. The books which I found on net: A Guide to Elementary Number Theory by Underwood Dudley Diophantine Analysis by Robert Daniel Carmichael Diophantine Analysis by Jorn Steuding Help me with good suggestions as I think... | 1 |
What are some quantities often used to measure the sparseness of a graph? For example, in a graph, with the number of vertices fixed, the smaller the maximum degree is, the more sparse the graph is. With the maximum degree fixed, the bigger the number of vertices is, the more sparse the graph is. For another example, t... | 1 |
I would like to know if a discontinuous local martingale with paths of finite variations almost surely is a martingale. I feel that it should be the case but can't find a straightforward argument. As noted by Did in its comments below, the continuous case follows easily from the widely known fact that continuous local ... | 1 |
Prove that a) the medians b) the altitudes and c) the angle bisectors drawn from the base angle of an isosceles triangle are congruent. Looking at this problem, I feel that this statement is just false. If you have an isosceles triangle given in the following link Link. Then clearly these are not congruent. Is there so... | 1 |
I was told that a dielectric slab inserted into a capacitor connected to a battery (constant voltage) will be repelled, because the energy stored in the capacitor increases when the dielectric is inserted, due to increased capacitance. What is the physical origin of this force? The attractive force by a constant charge... | 1 |
What is the official rule when mentioning a city/ state in a sentence? I always thought there was a requirement for a comma between the city and state, however is there also supposed to be a comma afterwards? Tim also enjoys football games, jumping on his motorcycle and being a guide for the Fredrick, Alabama, restaura... | 1 |
I am new to studying abstract algebra (and math in general). I've been reading Gilligan and Pinter's books. I am trying to improve my understanding by doing exercises. However none of the books I am reading seem to come with exercise solutions. Is there an abstract algebra book with lots of exercise with solutions? I a... | 1 |
Using packages like minted (thanks to Pygments), LaTeX can generate beautifully highlighted/colored source code. Literate programming tools such as noweb and cweb can generate beautifully typeset and readable documentation. Ideally, I would like that the docs generated by noweb and cweb have high quality syntax colorin... | 1 |
I saw in my abstract algebra textbook that defines the gcd of a polynomial over a field (i.e. the coefficients of the polynomial is taken from a field). My question is that what happens if the field is not a real numbers? I mean intuitively, I always think of it as real numbers. Is there anything wrong in taking of it ... | 1 |
Is there any text that I can use as a short reference for the standard techniques for solving basic ODEs? I currently have been using Boyce and diPrima as my ODEs text, and it is far too wordy for my taste. I'm also not too interested in expositions of applications of physics or phase plane analysis, as I have other bo... | 1 |
I have two matrices(the first one is mxm, while the second one is nxn, m>n). They store data pertaining to human speech. The second matrix contains a data segment that acts like an acoustic "signature". I need to find where this data occurs in the first matrix. Which mathematical tool(s) or method(s) can I use to get i... | 1 |
For each relation, determine which of these properties are present: reflexivity, symmetry, antisymmetry, and transitivity: I know the definitions of each of the properties but unclear as to how to apply them to each relation. {(a,a), (a,b), (b,a), (c,c), (d,d)} {(a,a), (a,b), (a,d), (b,a), (b,b), (b,d), (c c), (d,a), (... | 1 |
I'm looking for an adjective that describes that tasks should be approached "one-ly". To give some context: [Task] must be performed in one way and exclusively one way. or There must exist precisely one method of performing [task]. I am looking for an adjective that describes this "one-ness". The adjective does not nee... | 1 |
I just came across the term quantifier-free first-order formula, I first thought that might be similar to a propositional formula, but then after a closer evaluation I realized there are more concepts in first-order logic then just the quantifiers. I believe the difference is the following. A quantifier-free first-orde... | 1 |
Please compare He shrugged. and He shrugged his shoulders. Is there anything else that can be shrugged, besides shoulders? To me it sounds like duplication when used in this way. I'm aware of constructs like "He shrugged it off." but that's not what I'm interested in, and it also implies the use of shoulders, doesn't i... | 1 |
Does the expression "to add another dimension to the situation" imply that the situation has become more complex? In Arabic we would say something like "adds another dimension to the situation that has become more complex". But I know English tends to be very economic and implicit. So if I wanted to express that idea, ... | 1 |
The statement of the Cayley-Hamilton Theorem is fairly straight-forward. I now know how to find characteristic polynomials from a given matrix (or at least a matrix with certain properties that I am unaware of!). I know that the eigenvalues of the matrix are roots of the polynomial. But what does having such a polynomi... | 1 |
Is there a name for the practice of composing sentences in such a way that they don't contain proximate consonants which cause difficulty when read aloud? For example: Under this criteria, "dogs and cats" is preferable to "cats and dogs," because the consecutive d s in the latter are difficult to pronounce clearly and ... | 1 |
During a sunny day the walls of my house warm up (no surprise). My question: how much of this warming up (if any) comes from visible light? I associate infrared with thermal energy. If my house was floating in space (to prevent any thermal exchange with its surroundings) and I installed a giant infrared (and UV) filter... | 1 |
Does a matrix with all non-negative, real entries have all non-negative, real eigenvalues? Where might I find a proof of such? Ideas: Perhaps we can multiply a prospective eigenvector so its biggest entries are positive, and then show that it is a contradiction for it to have a negative eigenvalue? I am currently looki... | 1 |
I think the title says it all. I am planning on giving a talk in a few weeks about the Banach-Tarski paradox and I have some pdfs found online which describe the paradox a little but I am looking for a solid reference which covers the construction from A to Z and on which I can extract the main ideas for my talk from (... | 1 |
For instance, would you rather say "It became increasingly hard" or "It became increasingly harder"? From my understanding, both are possible, but their meaning is slightly different. The first simply means that it became "harder". The second literally refers to an increasing rate of getting harder. Though in practice,... | 1 |
I am looking for a specific word to describe a concept such that its meaning is linear and one-way. Such is the case for the title of this question. X would be of this concept and Y would not, Y would be the opposite of this concept. For example, all automobiles are motor vehicles but not all motor vehicles are automob... | 1 |
Traditional English prescriptive grammar teaches that these two verbs, to see and to hear, when describing their sensory nature, should never be used in the progressive aspect of tenses. Thus I am seeing you/I was seeing I am hearing you/I was hearing you would be incorrect. But in spoken English, whether it be in the ... | 1 |
I would like to create a table (cf. attached figure) and use curly brakes to summarize some of the cells. I did a lot of research and found this solution (Curly brackets around a table), but it doesn't help me much as it is only math content and I would like to enter text only. Does anyone have an idea about how to sol... | 1 |
I realize there are questions on the correct usage of "but" and "however". In this case, I am concerned with correctness in a formal context. I have heard it said that however should be used in formal mail communications instead of but because the word "but" has a negative connotation. Which should I use in, say, an em... | 1 |
As I read on Wikipedia, the Rutherford atomic model is not correct according to classical electrodynamics, as it states that electron must radiate electromagnetic waves, lose energy and fall onto the nucleus. I don't understand this explanation. It is clear to me that with given acceleration directed to nucleus and pro... | 1 |
I'm reasonably happy with the dictionary functionality in TeXworks but I am struggling to see how I can 'find' all the spelling mistakes in my (painfully long) tex file. I was hoping for a Wordesque spell checker in which I can scroll through each of my errors and accept or ignore the suggested changes. I could install... | 1 |
I am wondering if the verb expect is used as a stative verb in the following sentence: I entered the classroom and [to expect] to see some students but instead I found a note which said [...] Would it be possible to say "I was expecting"? Or is the verb stative in this context? Because then we can't use it in a continu... | 1 |
Can anyone please explain why light reflects at the boundary between two regions with different impedances? This sounds very simple but I got confused when I tried to think of how light and atoms interact with one another at the boundary. This question can actually be generalised to the reflection of all types of waves... | 1 |
I believe I am stuck with only these two options, but would appreciate an alternative usage. I am somewhat limited on sentence structure as this application is part of a mail merge document. The purpose of the business is to own and operate The Tutoring Center franchise location. OR The purpose of the business is to ow... | 1 |
What are the desirable pre-requisites to be able to learn model theory well? In particular, it seems that connections to algebra are used heavily especially as examples. I would like to know if a good grasp of algebra is essential for a deeper understanding of model theory and whether a good grasp of analysis and topol... | 1 |
I have started learning some basics of Category Theory.Currently i am trying to understand the concept of Direct limit and Inverse Limit but i find this concept really hard to digest. Could some one explain me with some details the good idea to think about Direct Limit and Inverse limit in practice? I have knowledge of... | 1 |
I'm interested in using TikZ to draw rooted trees whose leaves should all be on the same level, pretty much like this: Please don't pay attention to the fancy style and colours, I'm only interested in having all leaves at the same level. Anyone knows how to do this? I've looked into the manual and the appropriate secti... | 1 |
My understanding is that dark matter cannot be (or is at least highly unlikely to be) an exotic form of any known particle. On the other hand, articles about particle accelerators seem to say that the Higgs is the last piece missing in the Standard Model jigsaw puzzle. If dark matter is determined to be some form of ne... | 1 |
If I pick up a rock and set it on a ledge above my head, I do work in the process. The work I do is termed "potential energy". We know how to recover the energy (i.e. let it fall back to earth). However, while resting above the surface the energy is said to be "stored in the gravitational field", presumably meaning the... | 1 |
I was writing an email and faced the following situation: I am coming to Oxford this summer. If you are still around, I would be glad to hang out with you. Now normally we don't construct the conditional statement like the one above, where a present verb is followed by would. But if I change the second one to will it k... | 1 |
Im studying old exams and came across this one Question: a. Find a (discrete time or continuous time) random process that is wide-sense stationary (WSS) but not strict-sense stationary. b. Also, is it possible for a strict-sense stationary random process not to be wide-sense stationary? Answer: a. A sequence of uncorre... | 1 |
I remember being presented a mathematical puzzle some years back that I still can't solve. The problem is defined as follows: We have two points on a plane, and using only a compass, how do we find other two points, so that all four of them would be vertices of a square? I'm not sure whether the first two points were s... | 1 |
I know the word uxorious that is used to describe a husband who dotes on his wife excessively. What is the corresponding word for a wife who loves her husband dearly? I cannot pull anything out of my memory... and I feel it is very harsh on men if such a word weren't there! Example: He was an uxorious man who assiduous... | 1 |
I don't know if the title of this question is accurate or not. My vacabulary of grammar is very limited. May you could understand me by the following example: She told me that the earth is moving around the sun. She told me that the earth was moving around the sun. Which one is correct? Should the tense in that clause ... | 1 |
A lot of text books mention that one of the reasons that classical mechanics failed to explain atomic and subatomic processes is that electrons which accelerate should release energy in the form of electromagnetic radiation, which would lower the atoms overall energy level, but this does not happen. One place where I d... | 1 |
Okay, I am in no way a mathematics student but I happened to be writing a program on a map with coordinates of locations displayed on the map. My problem is that the points could be scattered on the map with an indefinite boundary and I need to find a boundary (rectangle) around these points and thus I need to get a fo... | 1 |
I'm a high school student. The head is hydrophilic, the tail is fatty acid, in other words hydrophobic. Here is the thing I don't understand, all textbooks state that water is repelled by hydrophobic tail, why? The hydrophilic head is composed of polar molecules, and water is polar, so they will attract each other. But... | 1 |
Consider this situation: You sent an application for a job, then the company boss sends you an email, and tells you if you are in town, he likes to meet you in person. Is it correct to say? "It could have been a great pleasure to meet you, but unfortunately I am currently in Russia." I'm not sure what tense I should us... | 1 |
I am trying to use IEEETrans to write a scientific paper in two column format. The issue is that one is not allowed to place figures in the left-hand side column of the first page. Figures should start on the top of the right-hand side column of the first page or alternatively, on the second page (any column). Is there... | 1 |
In sports, we have the term "Commentator's curse", (humorous) The supposed propensity of a player to blunder after having his/her talents pointed out by the commentator. [Wiktionary] Is there a phrase that emphasizes that the sportsperson performed brilliantly soon after the commentator's talk highly about their achiev... | 1 |
I know that massive gravitational bodies will curve the path that light travels. I think that quantum optical mediums also bend light. I am still confused of whether quantum optical mediums actually slow down light or if they just use absorption, re-emission, scattering, and delaying to create the illusion that light s... | 1 |
Most of the references I found online simply note that "see you later" is a farewell or parting phrase but nothing discussed when it is appropriate to use the phrase. Is it acceptable to use "see you later" in each of the following circumstances? When you will be seeing the person again later that day When you will be ... | 1 |
I am reading up on splines and as a beginner I have a basic question - Does it make sense to say - "I will fit a cubic b-spline to the data". As b-spline is just a representation of spline in terms of its bases. I think, a more accurate statement will be - "I will fit a natural/not-a-knot/clamped/etc. cubic spline to t... | 1 |
At the moment I'm a bit baffled. What sentence part is "visitors" in "I'm not allowed visitors"? I would not call it an object or a subject complement as "to be allowed" is no linking verb. The only idea I have is to say the sentence is elliptic and the full form would be "I'm not allowed to have visitors". Here "visit... | 1 |
As far as I understand, the incident photon interacts by photoelectric, Compton scattering or pair production with the electrons of the crystal (NaI(Tl) in our case). The electron that emerges from these interactions generates a number of photons in the UV or visible which are proportional to the gamma ray energy. Then... | 1 |
I've read here that microwaves are blocked by the holes in a microwave window because the holes on the door are small enough to prevent the microwaves from passing through. However, if wavelength is only the distance between successive crests of a wave, why should that decide what a certain wave can fit through? Why is... | 1 |
Projectiles containing delicate elecrtronic equipment may be damaged if they are subjected to high accelerations. For this reason, such projectiles may be fired from guns with long barrels but not from guns with short barrels. -Explain why a projectile fired from a long-barreled gun is subject to less acceleration than... | 1 |
I am new to LyX so I'm sorry if this question is really naive. I'm using LyX on a MacBook and I'm hoping to use the AEA document class on it. Since it is not available automatically, seems that I need to somehow install it on my own. All the help pages I can find talks about layouts and stuff that I, as total layman, h... | 1 |
I'm reading about how a "straight line" depends on the geometry of space. While I think I understand this, the example people give is: "Imagine a straight line on earth connecting two cities. It's actually curved because the earth is curved". My response to that would be "Well no, because a truly straight line would cu... | 1 |
I am currently reading the following paper by F.Takens: Multifractal analysis of dimensions and entropies. This paper discusses two different measures. One is generalized entropies and the other is generalized dimensions, however as far as I can see it doesn't discuss any association between the two. Can somebody pleas... | 1 |
Our course slides offer the following definition: "A parametric probabilistic model is a set of probability distributions indexed by a finite-dimensional parameter vector." This description defines "parametric probabilistic model" in terms of "parameter", which isn't particularly helpful. But it brings to mind some vec... | 1 |
I have this question on a homework assignment. I sat down with two other people for a long time and we derived the alternating harmonic series example, but I don't think that's valid because the question explicitly asks about sequences and not series. Note that it's for an analysis class and so far we've covered open a... | 1 |
I've read through answers to similar questions, and I haven't been able to find a satisfying answer. I've heard it said that in order to make out something, you need to use light with a wavelength at least as large as the object. In what way can you mathematically derive this heuristic? Moreover, does this apply genera... | 1 |
Question: What are some interesting or useful applications of the Hahn-Banach theorem(s)? Motivation: Most of the time, I dislike most of Analysis. During a final examination, a question sparked my interest in the Hahn-Banach theorem(s). One of my favorite things to do is to write a math blog (mlog?) post about various... | 1 |
is it possible to use participial prepositions in the following sense, or am I creating a dangling modifier. Moreover, is the punctuation correct? Considering his broken leg, Peter was not able to walk anymore. Peter was not able to walk anymore considering his broken leg. Understanding Einstein's statements is neccess... | 1 |
Special relativity theory says simultaneity is relative, meaning that different observers will not agree on what happened first and what second. Does it then make sense to say that looking at distant stars, we see them how they looked "billions of years ago" and not how they look now? Does it make sense to talk about w... | 1 |
So there is this kind of building located in the centre of a fork in the road (maybe in streets too). I don't know how to put it into words, but it looks like this: Or this: Is there a single English word for that kind of building? If it is a house, is there another name for that? In my native language (Indonesian), it... | 1 |
Possible Duplicate: Why the use of 'would' in the following When we tell a joke or narrate a story in simple present can we use 'would' in some cases? For example: He goes up to this man and punches him in the face. The man looks straight into his eyes and tells him that he will take revenge He goes up to this man and ... | 1 |
According to this extract from Wikipedia, the pronunciation of the term piste meaning "a ski run of compacted snow.": varies slightly in English, with British English using a long "e", (e.g. rhymes with "beast"), and American pronunciation using a short "i" (e.g. rhymes with "list"). Actually, references such as the Ca... | 1 |
I am finding hard to understand application of inclusion and exclusion in Matching problem? Suppose that n- n male-female couples are at a party and that the males and females are randomly paired for a dance ? what is the probability that none of the couple are paired together? I don't understand why we have to take Un... | 1 |
I'm struggling to find a way to express the idea that it's possible that something was done before something else was done. I'm not sure if I'm just tired, but the idea is this: In the present perfect, you would say "it has been done before". When you add "may" it becomes "it may have been done already". In the perfect... | 1 |
If we consider two spins, we can think of the spins as being either parallel (up|up or down|down)or anti-parallel (up|down or down|up). Or we can think of them as being in the triplet or singlet configuration. Is one description more correct than the other? Or is it just a matter of choice between two basis sets? It wo... | 1 |
Find the distribution of U=min(X,Y) where X and Y are independent random variables and both exponentially distributed with parameters lambda and mu respectively. The only headway I have made is that P(U< u)= P(X< u)P(Y< u) by considering the joint distribution of X and Y and the fact X and Y are independent; is this ri... | 1 |
I've noticed "At this stage" preceding delivery of the negative to the reader. What's the reason for this? "At this stage, unfortunately (for you), we won't be proceeding further with your application." "At this stage, your application has been declined." "At this stage, travel arrangements will be at your expense." Th... | 1 |
In Thomas Harvey's Elementary Grammar and Compsition he says: A complex sentence whose subject or predicate only is a clause, need not be separated into principal and subordinate clauses in analysis. Later in the section he gives the example, "That he is very sick, is evident," parses the sentence, then gives a sentenc... | 1 |
I am studying probabilites and the notion of poisson random variable was introduced in the class. But it seems to me that the introduction of poisson random variable is to provide a easy approximation of the binomial random variable conditioned that n is large and p is small. Besides, the preconditions in the poisson d... | 1 |
For some pdf ebooks, Adobe Reader displays the cover page alone even though the display mode is "two page view". Other than the cover page, the rest of the pdf content is displayed as two pages at once, which is expected in the "two page view" mode. My question is: Is it possible to enforce this behavior if I use pdfla... | 1 |
In algebraic geometry, we often consider a complex algebraic curve, and in order to get some intuition, we often draw it on the plane as if it were a plane curve. In most cases it turns out that the plane drawing really helps us thinking of the curve for instance when counting the number of intersections. Then I wonder... | 1 |
I have noticed that when certain tube-lights are switched 'ON' , they make certain noise corresponding to their "blinking". In blinking, there are alternate periods of the tube lighting up and then going out. The "sound" is heard at the instant the tube lights up. I can not properly describe the "noise" or the "sound" ... | 1 |
In this question... Why does a photon colliding with an atomic nucleus cause pair production? ...I asked why a photon colliding with a atomic nucleus can become an electron and a positron. The answer that I thought was most illuminating explained that a photon spends some of its travel time as a particle-antiparticle p... | 1 |
In batteries, what exactly do we mean by negative and positive charges? My understanding is that the negative charge of the anode is basically an atom with an extra electron in the last orbital and a minus electron in the last orbit of the positively charged atoms in the cathode? And so the electrons keep flowing and i... | 1 |
Most books on strongly correlated electrons claim that when the number of itinerant electrons is small and the screening length is large, that the system becomes "strongly correlated", (i.e. the independent electron approximation breaks down). If this is the case, why isn't doped silicon (or some other semiconductor/in... | 1 |
I am trying to draw an activation stack. I am really bat at TikZ, so I hope you can help me out. As you can see, there are four boxes stacked one on top of the other. Each box has a name, put on the right, and is made of an upper part, where variables and numbers are displayed, and a lower part which is divided in two ... | 1 |
A lot of textbooks and exam boards claim that light incident at exactly the critical angle is transmitted along the media boundary (i.e. at right-angles to the normal), but this seems to violate the principle of reversibility in classical physics. How would a photon or ray travelling in the reverse direction "know" whe... | 1 |
My question is regarding effect of Sun's gravity on earth. I want to know that if Sun's gravity can change Earth's landscape in long duration (i.e. billion of years) or not? Means if earth is dead planet and all other planets are not present in the solar system and Earth is as near as Sun as mercury currently orbiting.... | 1 |
Let A and E be opposite vertices of an octagon. A frog starts at vertex A. From any vertex except E it jumps to one of the two adjacent vertices. When it reaches E it stops. Let a(n) be the number of distinct paths of exactly n jumps ending at E. Find a(n) Is it right if I conclude that number of steps has to be an eve... | 1 |
I have a question that I am just curious about. Two principles: Magnetic fields and Magnetic susceptibility Supercavitation is the use of cavitation effects to create a bubble of gas inside a liquid large enough to encompass an object traveling through the liquid, greatly reducing the skin friction drag on the object a... | 1 |
Some people love creating or fostering the creation of events that are noisy, chaotic and fun, such as parties, arguments, reunions, etc. Sometimes there's a negative connotation to this (like in provoking an argument), but sometimes there is not (like in organising a big, noisy party). The word I'm looking for would b... | 1 |
Earlier, I asked here whether one can have spontaneous breaking of the Lorentz symmetry and was shown a Lorentz invariant term that can drive the vacuum to not be Lorentz invariant. How relaxed are the assumptions in the CPT theorem? Can one have the theorem to be valid for a Lorentz invariant theory with a vacuum that... | 1 |
Why is it said that electric current always flows from higher potential to lower potential? It's said that current flows from a positive terminal to a negative terminal, but I've read that it is actually the [negative] electrons that flow from the negative terminal to the positive one. Rather isn't it that the protons ... | 1 |
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