The self is an individual person as the object of its own reflective consciousness. Since the self is a reference by a subject to the same subject, this reference is necessarily subjective. The sense of having a self—or self-hood—should, however, not be confused with subjectivity itself. Ostensibly, this sense is directed outward from the subject to refer inward, back to its "self" (or itself). Examples of psychiatric conditions where such "sameness" may become broken include depersonalization, which sometimes occurs in schizophrenia: the self appears different from the subject.
The first-person perspective distinguishes self-hood from personal identity. Whereas "identity" is (literally) sameness and may involve categorization and labeling,
self-hood implies a first-person perspective and suggests potential uniqueness. Conversely, we use "person" as a third-person reference. Personal identity can be impaired in late-stage Alzheimer's disease and in other neurodegenerative diseases. Finally, the self is distinguishable from "others". Including the distinction between sameness and otherness, the self versus other is a research topic in contemporary philosophy and contemporary phenomenology (see also psychological phenomenology), psychology, psychiatry, neurology, and neuroscience.
Although subjective experience is central to self-hood, the privacy of this experience is only one of many problems in the Philosophy of self and scientific study of consciousness.
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...
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...
I hope the attachment works. We discovered Great grandpa's little Blue Book collection. These inexpensive, pocket-sized books brought all kinds of information to the masses before WWII. Quickly glancing over the physics book revealed suprisingly deep and acurate information for 1920. Anyone...
Homework Statement
Find an operator T on F^2 such that <T(v),v> is greater than or equal to 0 for all v in F^2, but T is not self-adjoint
Homework Equations
The Attempt at a Solution
I am trying to to find examples where <T(v),v>=0 where the operator is not 0
I study physics and i find math very interesting.
I'm using Michael Spivak's "Calculus" and i think it's really good book.
Spivak's book is great sample of book that i desire - it's for mathematicians, not for physicist, but you can understand it even if your not a mathematician.
And it...
I am resuming my education after a two year break (due to a career change). I am a little confused as to how to handle my current situation regarding math. When I left school two years ago, I was ready for calculus having completed college algebra and trigonometry. Since then, my algebra...
I've noticed that I learn at an exponentially greater rate my own way than I do by attending lectures in university is this the same for everyone? I'm in a first year course and besides the labs which are compulsory my subjects are biology, chemistry, physics and maths and I have a big book for...
I'm looking to find a cheap and short intro to the minimum knowledge of Classical Mechanics(Hamilton/Lagrange formulations) you need to know to understand properly Quantum Mechanics. Any recommendations? I'm not worried about it being too rigorous or in depth since I will take a full class in...
Hi everyone, I remember reading there is a theoretical argument that said its absolutely impossible for systems of charged particles (plasma) to cobble together without external field. But I don't remember the name of the theorem.
Can anyone name it? Or even better point me to some nice...
I've 2 more classes to go to finish my degree in applied math with a minor in physics. I am retired so will have plenty of time to devote to the study of quantum mechanics. I want to start building the necessary library now. I could use some good solid suggestions. I have an older copy of...
URGENT!: Self and mutual inductance
Homework Statement
1http://img20.imageshack.us/img20/8531/asdasdasv.png
a) Calculate L1, L2 and M for the coils in the following toroid (using thin toroid condition), the induced EMF in the second coil and the polarity.
N1 = 500
N2 = 200
I1 = (20 +...
Making Self resonating coils for wireless electricity transfer ! How to do @@
Dear Friends ,
I would like to make the wireless electricity project as done by MIT team.i am bit confused about how to make the two different coils resonate at the same frequency ??
Please help me...
Thanks...
What is the most effective way to learn physics material without the aid of a formal course?
Trying to (only) read material really thoroughly and take notes takes a huge amount of concentration, and doesn't seem to have been very effective for me. I think it would be amazing to meet someone...
I'm a chemistry major and recently discovered that I would love to go to grad school for physical chemistry (specifically computational chemistry and biophysical chemistry). Unfortunately I'm in my third year of college and don't have many free classes left. I started teaching myself math...
I was trying to self study Linear Algebra and I had a copy of Hoffman and Kunze. I found it a bit dry. I searched for some alternatives and I like these:
1) Applied Linear Algebra and Matrix Analysis - Thomas S. Shores (Springer Undergrad math series)...
Homework Statement
demostrate that the self inductance of a selonoid (L) that have: length = "l"; radius= "a" ; number of turns per unit of length= "m" , is:Homework Equations
L = pi*(m2)*(a2)*Uo*[ ( (l2)+(a2) )1/2) - a ]The Attempt at a Solution
It is suposse that the selfinductance is just...
Cliffs:
- ChE & Math double major, currently a junior.
- Just got offered a project in ChE department that starts after Thanksgiving.
- Project could turn into head start on Thesis, letting me get a masters only a year after my B.S.
- Told to learn Sturm-Liouville => Separation of...
Hi Guys, :smile:
In case of an Induction Generator (IG) connected to grid, the rotor runs at super synchronous (above synchronous) speed exhibiting -ve slip. This is possible since the grid frequency is fixed at say, 50Hz. However, in case of a Self Excited Induction Generator (SEIG), it...
I would be grateful for some help/tips/with this question.
Let (V,<,>) be a complex inner product space with an orthonormal basis {v1,v2,...vn}. Let L:V------>V be a linear operator. Explain what is meant by saying that L is self-adjoint. Let A=a_ij be the matrix representing L with respect...
Hello all,
i need one suggestion for shielding of a gamma source.
I have a gamma source with initial activity of 50 mCi=1.85X10^9Bq.
What thickness of lead needed to protect myself!
I used the formula I(x)=I exp(-kx). I=50mCi; k=37.6 cm^2/g (linear attenuation for 122 keV) and x the thickness...
Can anyone explain the following (the capitalized text)?
"The ions of the quenching gas reach the cathode before the principal gas ions. When they reach near the cathode, THEY CAPTURE ELECTRONS (secondary?) AND BECOME NEUTRAL MOLECULES. FOLLOWING NEUTRALIZATION, THE EXCESS ENERGY OF THE...
i am having a doubt that when we find a expression for mutual inductance we say that flux change in primary coil induces emf in secondary coil. but why change in flux doesn't induce any current in primary coil also.
http://i26.tinypic.com/250tkyh.jpg
the formula for magnetic field
is like they show but its not divided by l
like they did
i can't see a reason why they present it that way
??
My situation is that I taught myself Calculus 1, 2 and some 3 over the last year, and the better part of Freshman physics for majors, mechanics and EM. I bought 4 texts to learn from: Halliday, Tipler, Giancoli, and Young and Freedman. And I just started learning Diff. Eq. & Linear Algebra...
I have an application which would work very nicely with a rack-and-pinion. The problem is: the environment is inherently very dirty, and covering it isn't an option. Using the usual arrangement would cause it to quickly seize.
Does anyone know of a self cleaning rack-and-pinion design?
Suppose U is a finite-dimensional real vector space and T ∈
L(U). Prove that U has a basis consisting of eigenvectors of T if
and only if there is an inner product on U that makes T into a
self-adjoint operator.
The question is, what exactly do they mean by "makes T into a self adjoint...
Homework Statement
Suppose V is a complex inner-product space and T ∈ L(V) is a
normal operator such that T9 = T8. Prove that T is self-adjoint
and T2 = T.Homework Equations
The Attempt at a Solution
Consider T9=T8. Now "factor out" T7 on both sides to get T7T2 =TT7. Now we represent T as a...
Homework Statement
Prove that there does not exist a self-adjoint operator T ∈ L(R3)
such that T(1, 2, 3) = (0, 0, 0) and T(2, 5, 7) = (2, 5, 7).
Homework Equations
The Attempt at a Solution
I'm having trouble seeing that there is an actual operator, self adjoint or not,
that can do...
Homework Statement
Suppose P ∈ L(V) is such that P2 = P. Prove that P is an orthogonal
projection if and only if P is self-adjoint.Homework Equations
The Attempt at a Solution
Let v be a vector in V. Let w be a vector in W and u be a vector in U and let U and W be subspaces of V where dim W+dim...