User:Jorge~enwikiversity

For my work here:
m:Help:Displaying a formula

Physics Study Guide

MediaWiki Project

Portal_talk:Physical_Sciences

Guys to help:

In Physics: Special:Contributions/HappyCamper, Special:Contributions/Hypermorphism, Special:Contributions/Scientist

In Both: Special:Contributions/Draicone, Special:Contributions/Remi0o

In C.S.: Special:Contributions/Schoeberl, Special:Contributions/Mirwin, Special:Contributions/Mundhenk, Special:Contributions/Jlguinn, Special:Contributions/Pnguyen, Special:Contributions/Danielwedema

Quantum Mechanics
Dirac's notation
 * Bra-ket notation
 * Coordinate vector
 * deltas to extract coordinates

Talk:Hydrogen_atom
 * Read Cohen's treatment
 * 

Talk:Study guide:Quantum mechanics I
 * Develop lessons on math concepts touched and introduce Dirac's notation

Schrödinger's Equation
 * Help here

User:Jorge/Quantum Hall effect
 * I have a question about this

Statistical Mechanics
Talk:Study_guide:Statistical_mechanics
 * Write stubs for the fundamental lessons
 * Statistical Mechanics
 * 
 * Empezar presentando la necesidad de una mecánica estadística, por el elevado número de partículas.
 * Distribución de velocidades de Maxwell, con vínculos a las matemáticas estadísticas necesarias.
 * Contar cómo es que a escala macroscópica los valores medios de las variables con fluctuaciones en el equilibrio son exactos hasta un orden de 10 o 20 cifras decimales.
 * Presentar la entropía como la variable extensiva conjugada de la temperatura. Mostrar que si es así, la entropía siempre crece con el ejemplo de los dos sistemas que entran en contacto.
 * Microcanónico. Contar que en el límite de equilibrio (t->oo) y de colectividad (nº de sistemas -> oo), todos los estados accesibles son equiprobables. Resolución de sistemas de ejemplo.
 * Canónico. Deducir fórmula de Boltzman a partir de que el baño es infinito y baño+sistema estan aislados.
 * etc.
 * Mirwin notes from "Introduction to Solid State Physics", 6th Edition, Wiley, cp86

Electronics and Systems theory
Bode plot
 * good guide:
 * others: ,

Mathematics
Talk:Linear algebra

Least squares - para Cristina

Foundations of Calculus



Me
A great way to make me contribute is to ask me about a topic (of CS or Physics). The more concrete the question, the more interesting it will be, but feel impelled to ask just about anything. For example, I wrote the Least squares article solely because a friend of mine asked me what was that method about (she was requested to use it), and it's the biggest one-shot contribution I've made so far in any wiki.

"reflections on relativity", "physics"

I love from mathematicians that they must be the most creative they can. All the day imagining colors into structures... From the physicists I love their infinite curiosity (which I share), which impulses us to devour the harder of books if we believe we will find in them the least fact we don't know about Reality.

Astrophysics

 * How can we see the microwave background radiation? If it comes from the early universe, then in order to see it we should have traveled faster than light and then stopped, and we would see it coming from one direction, not from everywhere, ain't it? Or are we (well, the whole universe) in some kind of thermal equilibrium with that temperature? Additionally, why should it have the black-body spectrum?


 * I already know it :) If someone has questions related to this, tell me and I could start the Cosmology section of Wikiversity :) (or is there something already? It's been time since I don't browse the site)

Quantum Mechanics

 * Why is the expected value of J^2 j(j+1) and not j^2?? (for an eigenvector |j> of J, of course)


 * Measurement and collapse of the wave function in Quantum mechanics. Concretely what has been developed about the effect of the interaction of the measure apparatus with the wave function. I believe there's nothing magical in it: it doesn't collapse instantly for God's sake, but that instead it's something related to ressonances inside the aparatus, maybe. I read something about "decoherence" and understood it's about trying to explain it with stadistic irreversibility. Could it have something to do with sudden break of simmetry?


 * "The algebraic structure of the Lorentz group is SL(2, C) or O(3,1)." - What are these SL and O? I think I've seen them in advanced quantum physics articles in wikipedia, am I right? Well, what is "algebraic structure" of a group, anyway?
 * SL and O. What's the Lorentz group? Boosts + spatial rotations?


 * (Deduction of the existence of spin (at least the spin 1/2): Dirac's equation.)


 * How does the spin, as deduced from Dirac's equation, give the particle an angular momentum? How are the spin!=1/2 particles obtained? How does one know the spin of the particles which are quantums of a given field, e.g. the photon?

Computing

 * Finite differences and finite elements methods. (I can program, I just doesn't know those methods)
 * 


 * How does a 2 bit Branch Prediction Table solve the problem of nested loops? Which problem is that?

Why do I think this is going to work?
We have a different technology for teaching, with disadvantages, but also with advantages.

Examples of disadvantages:


 * We do not have blackboards, so we cannot expand explanations in a step by step basis. This is more important in lessons which are thaught by drawing some diagram step by step.


 * We cannot speak, and listening is faster and less tiresome than reading.


 * We have trouble to draw things (when teaching in the real life, you can draw anything in a sheet of paper or a blackboard).

Problems_I_have_encountered

But:


 * Whatever enlightening drawing that is uploaded or explanation clearly worded that is written will remain forever, until enhanced further: We have not to start over and over every year, we are like a teacher without limited memory.


 * We have the potential to have tens of thousands of students for each lesson. And with a big number of students comes a big number of questions. And answering real questions enhances and completes the work. New students will benefit from all the questions done by every student of the same subject ever: It will not depend anymore on the class being shy or not.


 * We can link to explanations from previous lessons. This can't be done in a book, so it ends up full of numeric references to previous content (linking by index, vs our linking which is hard and informatized) and has to be more or less self-contained. We, e.g., can link from an explanation in Statistical Mechanics (4th year of Physics) to a deduction in Differential Equations I (usualy 2nd or 3rd year, and common to nearly all Sciences and Engineerings), so instead of wondering what an exact differential equation was, a student can just follow the link and remember.


 * We will have interdisciplinary connections "for free": In real life you are told about them only if the teacher happens to know them, and only those the teacher happens to know. Here, if for some hazar, a student of Statistical Mechanics knows about Stochastic Systems, Markov Chains, etc., and when he is thaught about Phase Transition Appearance and Sudden Break of Simmetry happens to make the connection, he can write about it and it will last forever.

'''I am the first who wants to learn just about every topic in CS and Physics (and by the way, Economy and Psychology, but not yet) and feel there is no real need to pay for it. There are very bad profesors in University: I learn better and more on my own, without paying a cent. There are also very good and wise profesors: And they normally know about their subject AND about the other profesors' subjects better than anyone else. I would pay them to teach me what they know about every subject. Here in wikiversity this problem cannot exist.'''