Self Definition and 584 Threads

Homework Statement Prove or give a counterexample: the product of any two selfadjoint operators on a finite-dimensional inner-product space is self-adjoint.Homework Equations The Attempt at a Solution I'd say that if we let a diagonal matrix represent T (after all, its transpose representing...

I've been trying to start teaching myself Calculus recently out of interest and the amount of useful info on PF is awesome but I can't seem to find a good way to actually start it off. As far as books are concerned, it seems that Stewart's is the standard but supposedly it's too watered down...

How does CMBR differ from ether (SR self study -- Question from W. Rindler) Hello everyone First of all, apologies for a previous post which was against forum rules. I was unaware that I had violated the rules by posting a link to a paper that wasn't from a proper peer-reviewed scientific...

what does self consistent solution mean in for example Kohn-sham equations?

Well the question goes like this.. An Inductor is connected to a battery through a switch. Why the induced emf in the inductor is much larger when switch is opened as compared to when the switch is closed.

Hello, I'm about to be a high school senior next year, and I want to study Calculus on my own. I have a strong base in mathematics, and I'm self motivated. I am currently learning the basics of calculus from a book called "The Complete Idiot's Guide to Calculus", and I'll be done with it in a...

I'm a second year Indian medical student, and I've been interested in physics all my life, but didn't pursue a career because a) I'm a little slow in math and b) come on, I'm Indian, I have to be a doctor. I want to go into radiology, specifically nuclear medicine...

Hello all, Let me first say, "Hello PF." This is what I'm trying to decide: I'd like to spend this summer by self studying a range of topics. The problem is, I really don't know what I should study as I honestly have no clue what I want to do in college, etc. I started working through two...

How, or why is it we can assert individually "I exist"? Descartes considered this problem wasn't answerable or perhaps didn't understand it like we (think we) do now. Can an individual assert "I am, therefore, I think"? Who asserts thought, in that case, or where do thoughts occur and why? We...

Hey guys, As a hobby I've decided to pick up EE and I've been reading quite a bit and I'm interested in building some basic circuits and determining the SRF in some coils that I've wound. I have found that you can calculate SRF using this formula: ......(1/5) ...29.85 x (H/D) F =...

Can anyone explain this "self healing" mystery. Can anyone think of any type of failure mode in an electronic component that could account for the following weird case of my self healing LCD monitor. ---------------------------------------- I've got this LCD monitor that's got a weird...

Recently, I seem to have been stricken by a learning bug. I have just been craving knowledge of all sorts. I currently am not in college, and it has been several years since I took a math class. I had Intro to Astronomy last semester, and that was pretty decent. However, I currently am wanting...

Hey, I am currently planning on majoring in chemistry, but I am obsessed with physics as well. The school I plan on going to only offers physics as a minor degree, and I can think of many more practical things that I would want to do with chemistry than physics. Still, I like physics more, just...

I want to read all your theories on the self/personal identity, and what makes it. I think all properties of the self are corporeal. Possible points to discuss: -Subjectivity -Continuity -Memory Post away! (Perhaps this belongs in the Philosophy Forum)Some interesting reads on this topic...

ok, so i have a physics project. we were assigned to use a mouse trap tied to the axle by a string to propel a homemade car of sorts. but he says we can use and propulsion system as long as it doesn't use combustion or electricity. i don't want to use a mouse trap and I'm looking for other...

ok, so i have a physics project. we were assigned to use a mouse trap tied to the axle by a string to propel a homemade car of sorts. but he says we can use and propulsion system as long as it doesn't use combustion or electricity. i don't want to use a mouse trap and I'm looking for other...

I would like to know the best way to go about learning Quantum Physics. I have read a little here and there over the years, and it is a subject that greatly interests me. I have never had the motivation until recently to put some effort into learn more about it. If anyone out there can give me a...

Open question, respond with your style.

Ok, so I've been obsessed with the wackyness of quantum mechanics for years and I can't tell you how much i want to learn the math and the equations like the dirac notation and the shroedinger equation, spin and angular momentum...all of it. As a senior in high school I am going to start...

can electron energy levels just be considered the self capacitance of an atom?

Homework Statement Give a definition of (self) inductance. Suppose a battery, which supplies a constant EMF ϵ_0 is connected to a circuit of resistance R and inductance L at t = 0. Find an expression for the current as a function of time. Homework Equations V = IR V =...

with a strong foundation in algebra (1&2), would i be able to get a calculus book, read through it and begin to understand the concepts? ill be in precalculus this spring, but the curriculum at my institution isn't that complex. some trig and algebraic gymnastics. i was actually able to do my...

Hi, I'm a junior at my high school taking physics B and I planned to take physics C next year but then I found out its not offered at my school. So now I want to self study it and take the AP test during May of senior year, but would this be worth it, since neither the class nor the score on the...

Does anyone know how I should go about self teaching myself chemistry, physics and math for the goals of the respective high school olympiads for each one? I'm thinking of using Atkins Chemistry, Halliday and Resnick, and Problem Solving Strategies. Any other ideas or advice from people who...

i am medical doctor who wants to self study mathematics , the last mathematics course i took was 6 years ago at the pre-medical college .. worth mentioning that i am from a country where the educational system is different from USA at high school i studied algebra , calculus , trigonometry...

I'll take a quantum mechanics course this semester. I am a so-called advanced undergraduate (3rd year). This is the second course of quantum mechanics for me. The first was "the basics" (no bra and kets, a bit of linear algebra). I have read a couple of reviews of books on advanced...

yes i know there's one right beneath me, and i actually posted in it but my question is a little different than that poster's. I'm actually a physics student at a university at around the junior level and i want to pursue theoretical physics. now i know everyone says this because it sounds so...

Let me explain. I have bachelors in pure math (as opposed to applied math) and a bachelors and masters in nuclear engineering. I am employed as a nuclear engineer and I am happy. Before completing my masters, I did one semester of graduate work in math (I might still be there had I not taken...

Seems to me i do this more and more often, the result is given two options neither win, which can be both annoying and boring. Do you have inner battles what tips the balance?

I am a sophomore in high school and became interested in physics, particularly quantum mechanics, about a year ago. However, I will not be able to take a physics or calculus course in school until I am a junior. I have been trying to learn physics by myself, but without a background in calculus...

I wanted to teach myself computer science, but I don't know any great beginning books that give a solid introduction. I am a complete novice. Could someone provide some names? I am trying to learn C. And is windows good for doing C or is another operating system more preferrable? Appreciate...

I am interested in self-studying analysis and was trying to purchase a textbook, but I am not sure of the appropriate level to start at. I have come across: Intro to Analysis: https://www.amazon.com/dp/0486650383/?tag=pfamazon01-20 Intro to Real Analysis...

I would like to write a C program that writes itself to the screen (without reading from disk). My idea is to assign text to a string S, split it into two parts S1 and S2 and then write each part twice. If S1 is made equal to program part before text definition and S2 equal to program part...

I have long been interested in cosmology, and I took a course with the same title in undergrad. We used Liddle's book An Introduction to Modern Cosmology which I thought was pretty good, but it was relatively short. I have knowledge of mathematics and physics up to early graduate level (got my...

Hello all. I'm going to be entering my second year of college in the fall. I have a deep love for math and physics and I have decided to major in Mathematics. However I have a very limited background in mathematics. I will be starting Pre-Calc this upcoming semester and I am trying to hit the...

Hello there, Does anyone know some good sources (preferably on the Internet) for Monte Carlo and Inverse Monte Caro methods (especially the latter)? There is plenty of stuff to find on Monte Carlo, I am particulary pleased with Stefan Weinzierl's 'Introduction to Monte Carlo methods'...

Alright, I'll need some help formulating this, since my writing tends to be... well... just not very eloquent and representative of my thoughts. I don't believe in soul, afterlife, or other nonsense. I think our self, our consciousness, is a function of our complex brains. For what...

I don't have much experience in this, and hopefully someone can recommend the right type of book that I need to look thru in order to solve future problems like this. I have to have a formula for the nth derivative. I have like in the numerator, but Idk how to express it properly. 5 5 x 10...

Greetings. What would be the easiest way to generate random math problems for me to practice with? For example, I might want to have five questions that are just basic algebra, five that are polynomial long division, maybe some straight arithmetic thrown in, and perhaps later I could add...

Hi, I am reading conflicting things about self Capacitance when Shielding a Coil, can someone help.. IE: I have a coil of wire --say 25 turns, 250mm dia formed from looping in my hands & bound together with a non conductive thread. I have read on some sites that there is no affect on...

Which degree electrical engineering or computer science (programming) would be a better choice for a freelancer?

I'm a chemical engineering major and I noticed that my second semester I'll be taking chemical engineering computations, which entails "basic programming language." I don't know the first thing about programming, so what books could I study this summer as a good intro? Sorry if I'm being a...

Hey everyone. I've just gone back to university after a number of years off, and I'm looking to take Calculus in the fall of 2008. My problem is that it's been 9 years since I did Precalculus, so I was thinking of self studying through the summer. I've picked up Precalculus by James Stewart...

I went to walmart and found these self heating drinks/soups. All you have to do is twist a knob and wait a couple minutes and its ready. After looking online i wasn't able to get a straight answer. Is there a difference between the warming chemicals in the soups vs. hand warmers. I'm looking...

hi, am a s/w engineer with a lot of interest in physics in general. have studied it till about the high school level(Newtonian mechanics, no relativity, thermodynamics, no modern physics). i want to start studying the subject afresh, ground up. could you suggest some good texts i can start off...

I was reading through a chapter on Justice and Morality according to Rawls and Nozick and have come stumped at one of the questions which states: "Is it always possible to balance the interests of self with the interests of others?" What are your thoughts? I have surcome to a total mind blank.

peaec upon u .. i've read an article about this topic "physics of far from equilibrium systems and self organization" written by Gregoire Nicolis but it was truly a tough article it was talking about chaotic system but the vocabulary used was very hard for me to understand and translate...

Homework Statement A long, solonoidal coil with 2000 turns produces a B field pf 3mT at its center when a current of 1A flows through the coil. If the cross sectional area of the coil is: 2*10^-3 m^-2, and the field is uniform throghout the solonoid, determine the self inductance of the oil...

well, not exactly. I'm working on a little project for school (art school, ironically) and I think I'm a bit in over my rudimentary physics education. Basically, my idea is to create a wide, hollow wheel with a motor hidden inside of it, so that to the casual observer the wheel appears to...

The self is not physical, but symbolic What are symbols and why are symbols meaningful to me? One answer might be “the self is not physical, it is symbolic”—Becker. Mathematics is, I think, a useful means to start an effort for comprehending the nature of symbols. Mathematical concepts...