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Jun
25
comment Why don't most physics programs study the primary sources?
yeah, his second law as in "A change in motion is proportional to the motive force impressed and takes place along the straight line in which that force is impressed" which isn't expressed as proportional to the rate of change of momentum. And Lagranges Analytical Mechanics is very long winded when it comes to explaining virtual work, whereas Feynman does it in a paragraph - why? because we've moved on from 250 years ago as teachers and researchers refine and improve the interpretation and techniques. Please remove the -1
Jun
24
comment study quantum mechanics without physics background
+1 for the Griffiths recommendation. The reviews on Amazon.com are very favourable and his electrodynamics books is great.
Jun
22
comment Why don't most physics programs study the primary sources?
I think even Maxwell isn't worth reading today because he predates special relativity. Far better to read the works of talented teachers who teach as a profession and get feedback such as Griffiths with his Classical Electrodynamics book. Prof Lewin is another fantastic teacher who hasn't written a book, but has lectured on the web and maybe this is his medium. Maybe you're starting to fall asleep in the past and not keeping upto date with modern books.
Jun
22
answered Why don't most physics programs study the primary sources?
Jun
22
comment Does a static electric field and the conservation of momentum give rise to a relationship between $E$, $t$, and some path $s$?
Jackson and Griffiths don't say anything about this stuff so can you recommend a good book that goes into this?
Jun
3
comment How did L.H. Thomas derive his 1927 expressions for an electron with an axis?
I know that Goldstein and Jackson do it in the spirit of Thomas via the Lorentz matrix.
Jun
3
comment How did L.H. Thomas derive his 1927 expressions for an electron with an axis?
You don't understand what Thomas is doing. He's setting up a set of parallel moving frames in the lab. The electron enters comoving frame1 at $t$, enters comoving frame2 at time $t+ dt$ etc which are parallel to one another, whereas in the electron's frame, they're generally rotated through an angle. You seem to think there is a frame attached to the electron rather than seeing the electron as simply moving from one inertial frame to another.
Jun
3
comment What are the increasingly sophisticated ways to perform a Lorentz transformation?
Thanks for your answer and I'll have a look at HansdeVries's chapter
Jun
2
comment What are the increasingly sophisticated ways to perform a Lorentz transformation?
sure, they're the same transformation, but carried out using increasingly sophisticated methods that offer greater insight, and that seems to be what the question is asking for.
Jun
2
comment What are the increasingly sophisticated ways to perform a Lorentz transformation?
-1 the people before Einstein merely wrote down the transformations, whereas Einstein did indeed derive them from his two postulates, and not in a matrix form. Secondly, Minkowski reinterpreted the lorentz transformations as rotations in hyperbolic space, emphasising the invariance of the space time interval.
May
20
revised Is the electric field zero inside an ideal conductor carrying a current?
added 62 characters in body
May
20
comment Is the electric field zero inside an ideal conductor carrying a current?
I said an ideal conductor - meaning zero resistance
May
20
asked Is the electric field zero inside an ideal conductor carrying a current?
May
16
comment This sentence makes no sense, electrostatics and electrons moving in a conductor - current
+1 I love this answer, but the first paragraph answering the op's question was measley
May
16
revised Why isn't the force modelled which confines excess charge to remain inside a conductor?
deleted 48 characters in body
May
15
asked Why isn't the force modelled which confines excess charge to remain inside a conductor?
May
15
comment This sentence makes no sense, electrostatics and electrons moving in a conductor - current
@ron it'll do for engineers - as long as they don't ask too many questions
May
11
comment Which main physics journals publish the main types of physics papers?
@Qmechanic that question was closed here because it was concerned with mathematics journals.
May
11
comment Which main physics journals publish the main types of physics papers?
@DavidZaslavsky yes it's borderline, since it doesn't fall into the type of questions that can be asked, nor those those that shouldn't in the faq. On the other hand, it does say: "You should only ask practical, answerable questions based on actual problems that you face" which is true in my case - I want to publish a physics paper.
May
11
comment Which main physics journals publish the main types of physics papers?
I can see how some may vote to have this question closed as being too subjective; I don't think it is because certain types of journals definitely publish certain types of physics papers only