Just wondering, is it always better to have more than 3 GCPs? Should the GCPs be spread out evenly? Where can I find some general resources on the theory of this? Other than trial an error, which simply teaches me what works at that moment in time an QGIS offers 5 methods of classifying vector map data (quantiles, equal interval, etc). What is the theoretical base of these methods? If there are certain methods suitable for certain types of data or so. Or if you know some webpages dealing with thi My question is the following: Scales are The backbone of quite everything in western music. Does anybody know if there is some sort of backbone behind scales? A number, something like that? … I know that certain elements like Plutonium and certain isotopes of Caesium are radioactive but what gives them this ability? If it’s their electron/proton/neutron arrangement, what makes that arrangement give radioactive properties? Is it maybe the My undergraduate degree is in B.E electronics and electrical engineering. My undergraduate gpa is kind of pathetic because I was never interested in engineering but rather B.S physics. Unfortunately I was forced into engineering. Later I went on to p The wikipedia article on trinitromethane claims that:There is some evidence that the anion (which obeys the 4n+2 Hückel rule) is aromatic. Unfortunately the citation is behind a paywall so I … In class, we were first introduced to classical mechanics, and how Bohr used the hydrogen electron to explain the atomic emission spectrum of that element. And it made sense. But then classical mechanics fails to explain other things, so we jump to q Reading that the large hadron collider will be up and running with twice as much energy in March 2015, I was curious whether our understanding of subatomic particles has changed our understanding of chemistry.Edit: To attempt to narrow down the quest I understand the concept of a reactive species on a sort of vague and intuitive level: a reactive species is one that has lots of reactions that it can participate in. These tend to have lar … Richard Dawkins in one of his videos says that Evolution is a fact and not just a theory.He goes on to say that man and chimpanzees both evolve from apes. Is he 100 % correct?A tiny bit of t … As we probably all know, after ancient and medieval times European countries traveled to almost every part of the Globe. Today’s heritage are, among many others, Roman law and alphabet, Gregorian Calendar, English as international language, European A very, very common situation for me is this – I work out, I rest, I come back weaker. A number of books/people have given reasons for this:Not enough sleep.Not enough protein.Frequency too high. Etc. Can we get a comprehensive list of the factors (b Short story: I have started playing piano about 1.5 years ago. I miss only a few days without practise apart from being ill, on holiday, visiting family etc. I practice like crazy. My wife who actually bought a piano for my birthday present hates thi Assume in a software like Avogadro, I put molecules A and B in a specific distance and I know they will involve in a charge transfer reaction ( as Marcus Theory outer sphere transfer ). Then I run a calculation package as Gaussian or GAMESS.Now I wan The question is about emergence and reductionism. Except a few exceptions such as dark matter, most phenomenon in nature could be reproduced from the standard model and general relativity up to a great accuracy. Up to a Planck scale, there is no inco Also known as Coltrane Matrix, Coltrane Cycle, chromatic third relations, and multi-tonic changes.What are the Coltrane Changes? What’s the theory behind them? How are they used in improvisation, harmonization, and reharmonization? Look up ‘Coltrane In the month or so until my band get back together I’ve been working on writing some new material, and want to try and expand how complex my songs are. I apologise if there are a lot of questions – I’ll gladly split them up if needs be. Say I’ve got TL,DR: Is it normal that the theory sub-community and the applied sub-community of a single research field to have different goals and different standards for peer review – to the extent that the research field itself suffers?I work in a subfield of I’m currently writing a summary for my semiconducter devices course and I’m trying to do it with Latex (just started today). I have the following problem:I have two chapters with two formula … I would like to be able to cite an item during the body text and have the reference appear not only in the final bibliography, but also in full with the same bibliography number at the foot … Source.