Correction of Physics Text
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Description
Experience Level: Intermediate
Num. of words: 3000
Industry: Education
Topic: Theoretical Physics
Tone: Formal/Professional
Extensive research needed: no
Extra notes: I am looking for someone with a physics background to correct the english of an academic text (approx 10 pages). A sample of the text is below, if anyone wants to provide a sample of their correction please do the first couple of sentences.
Sample of the text:
Time scale is represented by a sequence of events (time points)with different intervals between them.
If we are in travel, by train for example, we do not need so much our watch because it is sufficient to observe the station names. With these stations we are able to estimate not only the geometrical distance from the point of our departure, but get also an idea on the progressing of time. The only knowledge we need is a sequence of stations extended along our trip. If we do not insist much on the accuracy of the intervals of time, we can be satisfied to know that "nearer" means an earlier station and time, whereas a "farther" station means a later moment of time. Evidently this kind of parallelism holds independently of the kind of the track along which the train is going on. But the tracks can be much different in their shape. One kind is, for example, that we are systematically farther from our departure point, but it can be also another kind of a track, namely circular in its character. This means that after several stations the train returns to the station of its departure. Then comes an important point of the trip. If the track crossing the departureend station is the only one, its effect on the train  if it preserves its motion including the motion direction  is to repeat its trip along the same set of stations as before.
**************************************************************************************************
Thank you for your responses. I just want to make sure you are aware that there a more complex mathematical components to the text, See below, there is no need to give an example of correcting this text, I just want to make sure you are aware that it is more complex than the sample text I posted earlier. PLEASE NOTE, THIS IS NOT FOR CORRECTION JUST TO MAKE SURE THE CORRECTOR IS AWARE THE TEXT GETS COMPLICATED IN PARTS. There is no need to bother about the mathematics (of course).
Title : Circular scale of time as a way of calculating the quantum mechanical perturbation energy given by the Schrodinger method
3. Schrodinger and Feynman approaches to the perturbation problem of a quantummechanical system.
Schrodinger has based his approach to the quantum theory
of the atomic systems on the property of duality represented by the particlelike and wavelike pictures of the matter. The Hamiltonian operator on which the approach is based is in fact
similar to that of a moving particle, nevertheless the operator of the particle momentum is chosen in the way that it gives an equation for a wave associated with the examined particle. A wellknown fact on such approach is that it gave very satisfactory practical
results. When solved sufficiently accurately, the Schrodinger
wave equation could produce very accurate data on numerous observables of the atomic world. This concerned especially the electron energy of atoms.
The point raised by Schrodinger himself was that, in general, his treatment becomes a very complicated mathematical task already for relatively simple systems. Such situation exists when a rather simple atom is influenced by an external field, for example of an electric or magnetic character. To avoid the difficulty of solution of his equation valid also in this case, Schrodinger proposed to consider the potential of an external field as a small perturbation of the potential governing the atom in the absence of any external influence. In consequence, the perturbation formalism operates with the wave functions describing the states
p>, q>, r>, ... (5)
and energies
Ep, Eq, Er, ... (6)
of an unperturbed quantum system together with the perturbation potential
Vper(r) (7)
characteristic for an external physical effect.
On many occasions it can be assumed that (7) does not depend
explicitly on time but is a function solely of the position vector
r, so it can be said that (7) represents a timeindependent perturbation problem. Another assumption which facilitates the approach is that the unperturbed state n> is nondegenerate.
Industry: Education
Topic: Theoretical Physics
Tone: Formal/Professional
Extensive research needed: no
Extra notes: I am looking for someone with a physics background to correct the english of an academic text (approx 10 pages). A sample of the text is below, if anyone wants to provide a sample of their correction please do the first couple of sentences.
Sample of the text:
Time scale is represented by a sequence of events (time points)with different intervals between them.
If we are in travel, by train for example, we do not need so much our watch because it is sufficient to observe the station names. With these stations we are able to estimate not only the geometrical distance from the point of our departure, but get also an idea on the progressing of time. The only knowledge we need is a sequence of stations extended along our trip. If we do not insist much on the accuracy of the intervals of time, we can be satisfied to know that "nearer" means an earlier station and time, whereas a "farther" station means a later moment of time. Evidently this kind of parallelism holds independently of the kind of the track along which the train is going on. But the tracks can be much different in their shape. One kind is, for example, that we are systematically farther from our departure point, but it can be also another kind of a track, namely circular in its character. This means that after several stations the train returns to the station of its departure. Then comes an important point of the trip. If the track crossing the departureend station is the only one, its effect on the train  if it preserves its motion including the motion direction  is to repeat its trip along the same set of stations as before.
**************************************************************************************************
Thank you for your responses. I just want to make sure you are aware that there a more complex mathematical components to the text, See below, there is no need to give an example of correcting this text, I just want to make sure you are aware that it is more complex than the sample text I posted earlier. PLEASE NOTE, THIS IS NOT FOR CORRECTION JUST TO MAKE SURE THE CORRECTOR IS AWARE THE TEXT GETS COMPLICATED IN PARTS. There is no need to bother about the mathematics (of course).
Title : Circular scale of time as a way of calculating the quantum mechanical perturbation energy given by the Schrodinger method
3. Schrodinger and Feynman approaches to the perturbation problem of a quantummechanical system.
Schrodinger has based his approach to the quantum theory
of the atomic systems on the property of duality represented by the particlelike and wavelike pictures of the matter. The Hamiltonian operator on which the approach is based is in fact
similar to that of a moving particle, nevertheless the operator of the particle momentum is chosen in the way that it gives an equation for a wave associated with the examined particle. A wellknown fact on such approach is that it gave very satisfactory practical
results. When solved sufficiently accurately, the Schrodinger
wave equation could produce very accurate data on numerous observables of the atomic world. This concerned especially the electron energy of atoms.
The point raised by Schrodinger himself was that, in general, his treatment becomes a very complicated mathematical task already for relatively simple systems. Such situation exists when a rather simple atom is influenced by an external field, for example of an electric or magnetic character. To avoid the difficulty of solution of his equation valid also in this case, Schrodinger proposed to consider the potential of an external field as a small perturbation of the potential governing the atom in the absence of any external influence. In consequence, the perturbation formalism operates with the wave functions describing the states
p>, q>, r>, ... (5)
and energies
Ep, Eq, Er, ... (6)
of an unperturbed quantum system together with the perturbation potential
Vper(r) (7)
characteristic for an external physical effect.
On many occasions it can be assumed that (7) does not depend
explicitly on time but is a function solely of the position vector
r, so it can be said that (7) represents a timeindependent perturbation problem. Another assumption which facilitates the approach is that the unperturbed state n> is nondegenerate.
MD O.
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