Self Definition and 561 Threads

Advice on a "great" self study book. PDE [FONT="Arial Black"]Hello, for the first time this summer i won't be taking ( at least i hope so) any classes. That will give me a lot of free time to do as i please. i will be a senior in college and i still have to take pde's. The prof that teaches the...

No one in philosophy or cognitive neuroscience has come to a general consensus about the “self”. Questions about the “self” and “consciousness” have been pestering me awhile. I believe I need more knowledge before I can truly adopt a position; hence the purpose of this message being the...

Hi, I was wondering if anyone could recommend a good solid book(s) for self study of electronics design? I emphasize design because I recently finished an electronics course in college and have found that I am decent at solving book problems but horrible at designing circuits. I still have no...

By all techinical standards, I am not required to take Differential Equations. I am currently a Physics major with a 2nd major in Mathematics Education. I want to take DE before I start any of my upper level Physics courses next fall since 2 of my academic advisors (one for Physics, one for...

so At my current school they do not offer ap physics, and i need to take ap physics b to get into university! Does anyone know who has taken the exam if it is possible to teach ap physics to yourself in 5 months?

hi, i am concerned that my lack of self esteem may be making it hard for me to meet someone, any advice? thanks!

Dear Physics gurus- I have a question which I believe will be rather simple for one of your to help explain to me. Not coming from much of a scientific background, I’m looking for a conclusive technical explanation of the following question which I debated at some great length with my...

Hello, I'm a new member from the north east of England. I'll use my lunchbreak to say a bit about myself. I'm married with three kids, one dog, two cats, two gerbils, a gecko and a corn snake. I work in local government I.T., educated to degree level (Computer Science), layperson interested in...

\hat{H}=\hat{H}_0+S\sum_{i,j}I_{i,j}(\hat{a}_i\hat{b}_j+\hat{a}_i^+\hat{b}_j^++\hat{b} ^+_j\hat{b}_j+\hat{a} ^+_i\hat{a}_i)-\sum_{i,j}I_{i,j}[\frac{1}{2}(\hat{a}_i\hat{b} ^+_j\hat{b}_j\hat{b}_j+\hat{a}^+_i\hat{a}^+_i\hat{a}_i\hat{b} ^+_j)+\hat{a} ^+_i\hat{a}_i\hat{b} ^+_j\hat{b}_j]...

Hi together ... I encountered the following statement: Operator A is self adjoint on D(A) then A(t) \equiv \exp(iHt) A \exp(-iHt) is self adjoint on D(A(t)) \equiv \exp(-iHt) D(A). H is self adjoint, so that exp(...) is a unitary transformation. But why does the domain transform this way...

Is there a model for determining the self resonant frequency of a flat spiral inductor? I can determine the inductance but the capacitance is escaping me. Thanks for any help.

Homework Statement "In class we calculated the electrostatic self energy of a uniform density sphere of charge, i.e., the work required to assemble the sphere from "infinite dispersal." Along the same lines, calculate the electrostatic self energy of a spherical shell of charge, of negligible...

Homework Statement I am given that an operator is defined by the following: \hat\pi\psi(x,y)=\psi(y,x) in a 2 variable Hilbert space of functions \psi(x,y) I have to show that the operator is linear and Hermitian Homework Equations An operator is self adjoint if...

I was wondering if there's some kind of curriculum I could follow to self-learn undergraduate physics and math. I'm a senior in high school, I took Pre-AP physics last year and am taking AP Physics this year. I also took a computer science class and am taking another one this year. I...

Both Wikipedia and my educators called electromagnetic radiation a self propagating wave. I would suggest that the word self be removed from wikipedia at least. There is no self in a wave. Even the word "coupled" or "causally related" are risky WRT the grav and mag components as I don't...

Can Someone learn all mathematics required for undergraduate physics from only one textbook (mathematical methods in physics texts ) prior to knowing anything in physics especially if he want to self study ? What are the advantages and disadvantages of this method? If I have superficial...

Hi, I want to review a turbocharger gas turbine design project. The previous problem was, the gas turbine could not sustain itself. Help me out if you can figure out what could be wrong.

Direct current I in a straight wire is decreasing with time. Let's assume dI/dt is large. Will such change produce self-induced current in the direction of I? If Lenz's law is an equivalent of Newton's 3rd law, how come changes in straight wire meet no resistance?

Hi everyone, i am new here. I have been doing some research on a self propelling electromagnetic generator. I am a bit confused on why they don't work and was hoping to have some input on some of my ideas. So the normal electromagnetic generator has a wheel with rare Earth magnets while...

I have really bad self control... basically I want to do things - things I know I should do, but I just can't make myself do them! this is causing a problem in my life! What can I do? How do you make yourself do things that you don't want to do but you know you should do? Any advice is welcome!

Hi, so I'm going to attend university this fall, and I'm planning to double major in math and physics. So I will be taking a calculus course based on Spivak and an Algebra course that uses Friendberg's Linear Algebra. So currently I'm trying to start studying these books so that I can get up...

Hello. I was wondering if I should self study multivariable calculus or introduction to proofs? I am an entering high school senior (contrary to what my username might suggest), and I just took a Calc 2 class last spring. I can only do one or the other, and I don't know which one would be...

As defined by wikipiedia: I believe all of these values are ingrained in our culture except that the cultural view of self-actualization is different then that of Maslow's Hierarchy of needs. All these ideals are problematic. For instance: 1)Personal responsibility presumes we are in...

I've got a good background in physics and math. I'm interested in getting a decent foundation in chemistry/biology with an eye towards understanding nutrition (for starters). (I've been out of school for years.) From browsing course requirements, it seems like I'll need: organic chemistry...

Hey guys, I entered high school not interested in math or science, which ended up really biting me. I really want to learn some university-level physics and calc before I go off to college, but I don't have the perquisite courses. ( the physics and pre-calc classes I am taking next year...

There are a lot of calculus books I've heard around these forums, namely Spavik, Stewart, Apostol, and Thomas. Can any direct me to each books strengths towards self study? I don't mind one with a decent amount of theory, in fact, I welcome it.

self exciting dynamo question I was reading about dynamo's and there was one that the power it made was used to run the electromagnet that made the magnetic field that the induction coil spun in. This got me thinking if a generator can make enough electricity to power an electromagnet that is...

I am... a slacker who hasn't been living up to their full potential. I used to do very well, but then I just got lost in existential depression. I spend most of my time bored, searching for something entertaining to pass the time. It's usually internet forums or TV... but they're starting to...

I am an undergrad that will be a sophomore in the fall, and I've completed the first level class in calc-based classical mechanics, as well as Calc I and Calc II. The math presented to me was a typical plug-n-chug, cookbook, focus on techniques rather than concepts style. In short, I don't...

Ug physics self study alongwith engineering...please help...! I belong to india, and couldn't get a decent physics ug course for reasons i don't have time to explain. I have now ended up in an engineering course and plan to self study and take the gre after 4 years. And yeah, forgot to say, my...

First of all this is not a perpetual motion machine. This type of transit drive works in theory by having two combustion chambers positioned parallel to the spacecraft 's width and perpendicular to its length. Each of the two exhaust nozzles are also positioned parallel to the spacecraft 's...

Hello, I'll start off by introducing myself, I'm a high school graduate who barely passed any form of Mathematics, I struggled even on some of the most basic of Math. My grades never passed the C - range (50%~). I have been self teaching myself for the last 2~ years. I have currently worked...

this year I finished calculus BC, which is the equivalent of calc 1 and 2. I feel as though I've completely mastered the material and I'm ready to start moving on before I enter university next year. The next math classes I'd be taking would be differential equations, calc 3 (multivariable...

Hi, I am looking for a really good book that I can use for self study of algebra. I would like the book to contain topics from both algebra 1 and algebra 2. I took both algebra 1 and algebra 2 in high school and did very well in both. However, its been several years and there are certain...

For the last few months I have been fascinated with Physics. I taught myself the basic, non-calculus based ,Newtonian concepts. In Math class, I would always study my notes instead of physically solve the math. That is why I never really enjoyed it before. Now that I actually doing the...

I'm taking Calc 1 and 2 this summer to try and catch up for the math needed in physics(which I am starting next year). I have an introductory calculus based mechanics book that's about 400 pages long, 12 chapters. Would it be worth trying to self teach myself some of this stuff before I take...

So as I have mentioned, I have recently started looking for jobs, and have an interview scheduled late May. As a physicist, I find that Feynman's quote "if you're doing an experiment, you should report everything that you think might make it invalid" really resonates with me. I really...

Hello, I'll be starting grad school soon after taking two years off since undergrad. As a review, I'd like to go through all of Halliday Resnick and Krane's 5e "physics," doing as many problems, questions, exercises, and multiple choices as I can. Does anyone know where I could find an answer...

What is self and air broadening effects? I have read that they appear in atmospheric modelling. Is this pressure broadening?

Hi all, The situation is this: I need to calculate the self inductance of two solenoids wired in series, of equal radius and a given separation d. They are coaxial. The length h of each is known. Most double-solenoid references I found looked at the mutual inductance, and not the...

I realize that energy is a touchy subject in GR in dynamical situations, and people argued for a long time whether or not gravitational waves carried energy. But it sounds like there has been agreement for quite awhile now that they do carry energy. Since in weak gravity situations, we can...

I know its not impossible, since us humans are cable of self healing to diseases and viruses why not operating systems? I know if there's a good AI program embedded in windows maybe can be used to search for abnormalities in its everyday operation and when found it will develop or create a file...

I've taken maths up to calc III, and want to learn linear algebra over the summer. My school won't let me take more than 21 credits, which is what i'll be having for the next few semesters. I'm familiar with elementary row ops, gaussian elimination, least squares, but not much else. Is...

Hi there everyone. I am a programmer not long out of University and i have a really keen interest in a particular physics engine. Physics is far beyond my current range of ability and so is a lot of maths :( but i have spent a long time trying to get some kind of an entry point. Firsty right...

Homework Statement I am trying to work out the size of the field coil in a self-exciting generator as well as the size of the induction coil and the speed it all has to move Homework Equations I think Faraday's law is what I need but I am not sure I am not a physics student so finding...

Guys, I have two questions: (1) what does a vanishing Fermi energy mean? (2) I have also calculated the phonon self energy for the electron phonon interaction in graphene. However in one of the papers, they state that one needs to subtract from this self energy the case of vanishing Fermi...

Hello guys... Can anyone tell me where I can find a detailed calculation of the phonon self energy for an electron phonon interaction in graphene... The expression I need to get is in T. Ando paper: Journal of the Physical Society of Japan Vol. 75, No. 12, December, 2006, 124701 Equation...

hi i want to drive led's through a RC series (time constant) circuit, which is powered by a DC source and when the capacitor is fully charged,, the switches should be such that the capacitor will discharge automatically glowing the led's from opposite direction, So the led's will give one...

Hi everyone, I am teaching myself calculus from Spivak's book. I am wondering if it is necessary to do all or 1/2 of the problems in the book to gain a good understanding of calculus. Thanks.

I've gone through both "ZapperZ's "So you want to be a Physicist?"" and "The Should-I-Become-An-Engineer? Thread", and I am still having a tough time figuring out what exactly I want to do. Both threads, and many other threads, have given me a lot of insight about what each field involves, but a...