Classical music is art music produced or rooted in the traditions of Western culture, generally considered to have begun in Europe after the fall of the Western Roman Empire in the late 5th century CE and continuing to present day. Classical music refers to Western musical traditions considered to be apart from or a refinement of Western folk music or popular music traditions. The major periods are the medieval (500–1400), Renaissance (1400–1600), Baroque (1600–1750), Classical (1750–1820), Romantic (1800–1910), Modernist (1890–1975) and Postmodern era/Contemporary (1950–present) eras. These periods and their dates are all approximate generalizations and represent gradual stylistic shifts that varied in intensity and prominence throughout the Western world.
The term "classical music" did not appear until the early 19th century, in an attempt to distinctly canonize the period from Johann Sebastian Bach to Ludwig van Beethoven as a golden age. The earliest reference to "classical music" recorded by the Oxford English Dictionary is from about 1829.European art music is largely distinguished from many other non-European classical and some popular musical forms by its system of staff notation, in use since about the 11th century. Catholic monks developed the first forms of modern European musical notation in order to standardize liturgy throughout the worldwide Church. Western staff notation is used by composers to indicate to the performer the pitches and durations for a piece of music. It includes both sacred (religious) and secular music. In contrast to most popular styles that adopted the song (strophic) form or a derivation of this form, classical music has been noted for its development of highly sophisticated forms of instrumental music such as the symphony, concerto, fugue, sonata, and mixed vocal and instrumental styles such as opera, cantata, and mass.
Homework Statement
Hi, I am trying to work through exercise 2.1 on page 37 of Microcavities (by alexy kavokin, jeremy baumberg, guillaume malpuech and fabrice laussy)
the problem is to prove
| g^{(1)}(\tau) | = | cos( \frac{1}{2}(\omega_1 - \omega_2)\tau) ) |
where...
A block is resting on a frictionless surface as shown in the figure attached with this post. Calculate the minimum force F required so that the block will topple? The dimensions of the block, free body diagram and other details are there in the picture attached.
Now, since the surface is...
Homework Statement
A point mass m moving along the z axis experiences a time dependent force and a fricitional force. Solve the equation of motion
m\ddot{z} = -m\gamma\dot{z} + F(t)
to find v(t) = \dot{z}(t) for the initial velocity \dot{z}(0) = v_0
Hint: what is the time derivative of...
Homework Statement
A point mass m is exposed to a time dependent force F(t). Determine the position r(t) of the point mass for the initial conditions r(0) = r_{0}and v(0) = v_{0}
Homework Equations
The Attempt at a Solution
\sumF= ma
F_{z}(t) - mg = ma
a = 1/m F_{z}(t) - g...
I am taking calculus based physics I (classical mechanics) in a few days. I'm shooting for 100s on my tests so I need to be diligent.
What is the best way to study classical mechanics?
What I plan to do is take notes on the chapter before lecture, and after I will do all the problems (not...
So I'm looking for a decent book which I can use as a reference for now (and hopefully at some point read all the way through) on the mathematics of physics. And by "mathematics of physics" I mean a single book which covers the bases of most math needed for any undergraduate and maybe even the...
Why do first-year grad students take classical mechanics, besides those wanting to analyze mechanical systems?
This would be a course along the lines of Goldstein, etc.
Do some of the concepts/methods show up later in quantum mechanics, nuclear physics?
If they skipped this mechanics...
I am reading an introduction to quantum computing and I have a question about one thing I don't understand.
"In classical physics, the possible states of a system of n particles, whose individual states can be described by a vector in a two dimensional vector space, form a vector space of 2*n...
This is an extract from my lecture notes:
"For classical stochastic systems, w(p,x,t)dpdx = prob. particle is in dpdx.
w\geq0 \int dp \int dx w(p,x) = 1."
1. Can anyone please explain what a classical stochastic system is?
2. Why is there a question of probability in analysing such a...
Hello everybody,
I recently had to do with a model of a single Spin coupled to a very generic quantum mechanical bath (the actual point was finding pulses that manipulate the spin as accurate as possible despite having a finite length in time but as this doesn't have anything to do with my...
Homework Statement
Assume a ball has mass "Me" and wrapped by water like ocean and Earth ,the water has mass "Mw" and density \rho ,when the ball spin with angular velocity \omega ,and the shade of system goes to ellipsoid, please expres the water depth in spherical coordinate system
Homework...
Homework Statement
You have a latice of particles that all have spin 1, but they can change the direction of their spin so constraint \left|S_j\right|=1. There is only interaction with the closest neighbours so we have the following hamiltonian:
H = -J \sum_{\left\langle ij \right\rangle}...
This question has been bugging me. I have a math degree, and my computer knowledge is limited to VERY BASIC programming and being able to build my own PC, so I thought this would be a good place to ask.
Note: This question has no "clean cut" forum to fit into. I read ALL the forum...
Hey everyone,
I posted this a while back in General Physics without any reply, and it looks like this is actually the germane forum (despite the fact that I'm explicitly NOT looking for QFT) -- but I couldn't find the "move thread" option...
Anyway:
I'm looking for some books that...
Wondering if it is only the formulae of quantum mechanics that routinely include complex numbers (a real component plus an imaginary one, e.g. i (the square root of -1)). If so, doesn't this immediately suggest (or even demand) that the (un)reality of the quantum realm is fundamentally unlike...
Classical Mechanics Homework question
Question - A light elastic string AB of natural length L and spring constant K, lies slack on a horisontal plane. A particle of mass m also at rest, is attached to end A of the string. The other end B is pulled along the plane with constant velocity V...
I'm beginning a directed study in QFT this fall and my supervising instructor told me I'd need to know some basics of Lagrangian and Hamiltonian Mechanics before we began (he also told me I needed to go back and review Perturbation Theory) since I'd need to know the formalism I guess?
I've...
Momentum of "massive" classical free field
A "massive" classical free field such as that given by the http://arxiv.org/abs/0809.1003" . If the de Broglie relations are used, and v is the group velocity, the field can have momentum given by p=γmv. Can we assign such a field p=γmv without the...
Hey everyone,
I'm looking for some books that really dig into the topic of classical field theory -- and not necessarily just the fields that were known during the heyday of classical physics (electromagnetic / gravitational), but not necessarily all about Yang-Mills and Dirac fields, either...
Let's discuss only classical fields and particles.
For fields, E2=p2+m2 applies only if the field is free. In the presence of sources, we have to use the energy-momentum tensor.
For particles, does E2=p2+m2 apply only when they are free, or does it work even if they are acted on by a force?
Can a massless classical particle experience a nonzero Newton's second law force?
Dickfore produced a very interesting formula in https://www.physicsforums.com/showpost.php?p=3333233&postcount=52 .
Is this generally accepted? Are there other expressions that work? Or are all acceptable...
Hi all,
I'd like to improve my understanding of classical electrodynamics, but as a UK PhD student my time for self-study is pretty limited- we don't make much time for general physics education at a graduate level. I was wondering if someone could recommend a short path through Jackson's...
Classical charged particle's reaction to a retarded field
This is something I've been curious about for a while -- every once in a while, I'll see some random reference to it in an article, but I never feel like it's the whole story.
The situation is this -- you have a moving classical...
Which is better at determining whether the universe has a cause? From my basic understanding, quantum mechanics is generally accepted to be indeterministic whereas classical mechanics is deterministic. Posted in the philosophy question because this is related to the first premise of the Kalam...
Homework Statement
Using the corresponding constraints conditions, calculate the kinetic energy of
1)A homogeneous cylinder of radius a that rolls inside a cylindrical surface of radius R>a.Homework Equations
My toughts: I hope they meants "roll without slipping". Let's consider this case...
Please teach me this:
I think that the classical physical laws are the relations between expectation values of macroscopic objects(the values are taken average on ''quantum values'').The quantum physical laws in one sense are the relations between operators.Then there are a great difference...
Homework Statement
Determine the principal moments of inertia of a circular cylinder with radius R and height h.
Homework Equations
Not sure.
The Attempt at a Solution
This is the first problem of this kind I attempt to solve.
From what I've read on wikipedia, the tensor of...
A ball of mass m rests at times t less than 0, at height h above the ground. at time t=0 the ball is released and fell on the ground after hitting the ground, the ball rests there.
a) x represents distance from the ground, drive and expression for the phase diagram when the ball moving toward...
Homework Statement
Determine the possible trajectories of a particle into the following central potential: U(r)=U_0 for r< r_0 and U(r)=0 for r>r_0.Homework Equations
Not sure. What I used: Lagrangian+Euler/Lagrange equations.The Attempt at a Solution
I used polar coordinates but I'm not sure...
The title may be a bit vague, so I'll state what I am curious about.
Since complex field is 'extension' to the real field, and in electrodynamics we use things like Stokes theorem, or Gauss theorem, that are being done on real field (differential manifolds and things like that, right?), can...
Homework Statement
In Drude - Lorentz' FREE ELECTRON GAS MODEL , it has been said " since the conduction electrons move in a uniform electrostatic field of ion cores, their potential energy remains constant and is normally taken as zero, i.e., the existence of ion cores is ignored." I don't...
I'm an aerospace engineering major. I'm wondering if, in the future (perhaps after graduation), a treatment of classical mechanics under Taylor's book would be useful to me. I will be taking classes on statics and dynamics, but after that, there doesn't seem to be any further treatment of...
These are professor Balakrishnan's quantum physics lectures, he also has classical physics lectures, they're worth watching,, he's good..
Enjoy ^_''
Edit: These are not very introductory, for that you can see Susskind's Lectures, or something else you might find..
When we study a classical system of distinguishable particles, we use parameters \epsilon_{j} for the energy states and n_{j} for the number of particles in \epsilon_{j}. But clearly, the energy states are not discrete in classical systems. Surely, this is nonsensical. Why are we doing this then?
I know how photons are diffracted round a corner in quantum mechanics. But is there also an explanation in classical electromagnetic theory (i.e. by Maxwell's laws?)
Imagine there was an EM wave traveling purely normal to a slab of material which is highly attenuating, but which has a small...
Homework Statement
A particle of mass m moves under a uniform gravitational field along a rod which moves in a vertical plane with a constant angular velocity \vec \Omega. Write down the motion equations of the particle and calculate the constraint force. Is the energy conserved...
I have often seen it stated that the Uncertainty Principle (UP) is a unique feature of Quantum Physics, but surely it applies classically too?
For example, if someone throws a ball across a room, and I take a photo with a shutter speed of 1 second, the resultant photo will tell me a lot about...
Sorry if this is a bit stupid, but I have absolutely no grasp on chromodynamics or really any nucleic forces...
Is there a 'classical' way of expressing the strong force in an equation? By classical, I mean extremely simple, approximate way of describing it for two point particles. Like a...
Homework Statement
The cycloid pendulum consists of a particle under the effect of a constant gravitational field (\vec g = -g \hat y) that moves without friction over a curve described parametrically by x=a(\theta + \sin \theta) and y=a(1-\cos \theta ).
1)Write down the Lagrangian and the...
Hi.
I am trying to find the classical turning points in semi-parabolic coordinates for the hydrogen atom when an electric field is being applied to it in the y-axis. I am reading an article for those who are interested called Classical, semiclassical, and quantum dynamics in the lithium...
What is the typical material covered in such classes? Is there a common textbook used by most colleges that I could look through? Can someone suggest a good book from Dover publications that I can pickup cheaply to serve the same purpose?
Much appreciated.
Hi all,
I was speaking to a design engineer and he mentioned that he uses Classical Finite Element Analysis in his work designing valves and cylinders.
Can someone explain to me what is Classical FEA, and how does it differ from FEA that you use in a computer program (Ansys, abaqsus,...)...
is there relation between the adjoint (as in conjugate transpose) and the adjoint of a matrix(each entry replaced by the its cofactor and one takes the transpose of the resulting matrix)
Thank you
Will someone please explain the foll. doubts in this solved problem from David Morin's book.
TIA
sree
------------
DOUBTS :
1. What is the principle of eqn. 3.78 ? If V is block speed and Vy is its component in y dirn., why should V + Vy be constant ?
2. In Why should...
Homework Statement
I try to solve the problem 3.5 in Kleppner Kolenkow ”An introduction to Mechanics” using various approaches but end up with wrong answers. The problem is:
3.5 A circus acrobat of mass M leaps straight up with initial velocity v0 from a trampoline. As he rises up he takes...
Homework Statement
Calculate the Cartesian expressions and the value of the modulus of the angular momentum in cylindrical coordinates of a particle whose coordinates are (r, \phi, z).Homework Equations
L=T-V, \vec P = \sum _i ^3 \frac{\partial L}{\partial \vec {\dot q_i}}, \vec M = \sum _i^3...
Hi there PF.
I have recently been working on the Classical Unified Field Theory, and i want to ask, why the Einstein-Maxwell equations does not candidate for a Classical Unified Field Theory, since it incorporates both general relativity and electromagnetism, into a single formalism?
I...
I am a Physics major, just completed my junior year. During my fall semester I took the first level to the upper level Classical Mechanics sequence and received a C. I know that this was because I was working part time at that time so I was not able to put in as much time as I should have into...
Hi everyone,
I have a severe confusion about the notions of "expanding the theory around a classical vacuum" and "considering small fluctuations around a classical vacuum" which I find in QFT textbooks.
My problem is: in the path integral \int D\phi e^{i S[\phi]} one doesn't integrate only...