What is E&m: Definition and 242 Discussions

R.E.M. was an American rock band from Athens, Georgia, formed in 1980 by drummer Bill Berry, guitarist Peter Buck, bassist Mike Mills, and lead vocalist Michael Stipe, who were students at the University of Georgia. Liner notes from some of the band's albums list attorney Bertis Downs and manager Jefferson Holt as non-musical members. One of the first alternative rock bands, R.E.M. was noted for Buck's ringing, arpeggiated guitar style; Stipe's distinctive vocal quality, unique stage presence, and obscure lyrics; Mills's melodic bass lines and backing vocals; and Berry's tight, economical drumming style. In the early 1990s, other alternative rock acts such as Nirvana and Pavement viewed R.E.M. as a pioneer of the genre. After Berry left the band in 1997, the band continued its career in the 2000s with mixed critical and commercial success. The band broke up amicably in 2011 with members devoting time to solo projects after having sold more than 85 million albums worldwide and becoming one of the world's best-selling music acts.
R.E.M. released its first single, "Radio Free Europe", in 1981 on the independent record label Hib-Tone. It was followed by the Chronic Town EP in 1982, the band's first release on I.R.S. Records. In 1983, the group released its critically acclaimed debut album, Murmur, and built its reputation over the next few years through releases every year from 1984 to 1988: Reckoning, Fables of the Reconstruction, Lifes Rich Pageant, Document and Green, including an intermittent b-side compilation Dead Letter Office. Don Dixon and Mitch Easter produced their first two albums, Joe Boyd handled production on Fables of the Reconstruction and Don Gehman produced Life's Rich Pageant. Thereafter, R.E.M. settled on Scott Litt as producer for the next 10 years during the band's most successful period of their career. They also started co-producing their material and playing other instruments in the studio apart from the main ones they play. With constant touring, and the support of college radio following years of underground success, R.E.M. achieved a mainstream hit with the 1987 single "The One I Love". The group signed to Warner Bros. Records in 1988, and began to espouse political and environmental concerns while playing large arenas worldwide.
R.E.M.'s most commercially successful albums, Out of Time (1991) and Automatic for the People (1992), put them in the vanguard of alternative rock just as it was becoming mainstream. Out of Time received seven nominations at the 34th Annual Grammy Awards, and lead single "Losing My Religion", was R.E.M.'s highest-charting and best-selling hit. Monster (1994) continued its run of success. The band began its first tour in six years to support the album; the tour was marred by medical emergencies suffered by three of the band members. In 1996, R.E.M. re-signed with Warner Bros. for a reported US$80 million, at the time the most expensive recording contract ever. The tour was productive and the band recorded the following album mostly during soundchecks. The resulting record, New Adventures in Hi-Fi (1996), is hailed as the band's last great album and the members' favorite, growing in cult status over the years. Berry left the band the following year, and Stipe, Buck, and Mills continued as a musical trio, supplemented by studio and live musicians, such as multi-instrumentalists Scott McCaughey and Ken Stringfellow and drummers Joey Waronker and Bill Rieflin. They also parted ways with their longtime manager Jefferson Holt and band's attorney Bertis Downs assumed managerial duties. Seeking to also renovate their sound, the band stopped working with Scott Litt, co-producer and contributor to six of their studio albums and hired Pat McCarthy as co-producer, who had participated before that as mixer and engineer on their last two albums.
After the electronic experimental direction of Up (1998) that was commercially unsuccessful, Reveal (2001) was referred to as "a conscious return to their classic sound" which received general acclaim. In 2007, the band was inducted into the Rock and Roll Hall of Fame, in its first year of eligibility and Berry reunited with the band for the ceremony and to record a cover of John Lennon's "#9 Dream" for the compilation album Instant Karma: The Amnesty International Campaign to Save Darfur to benefit Amnesty International's campaign to alleviate the Darfur conflict. Looking for a change of sound after lukewarm reception for Around the Sun (2004), the band collaborated with co-producer Jacknife Lee on their last two studio albums—the well-received Accelerate (2008) and Collapse into Now (2011)—as well as their first live albums after decades of touring. R.E.M. disbanded amicably in September 2011, with former members having continued with various musical projects, and several live and archival albums have since been released.

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  1. T

    Schools Grad school on only ONE semester of quantum and e&m?

    For personal reasons beyond my control I have not been able to do as much studying at home as I needed, and I totally burned out. I finished honors quantum I with an A and honors e&m I with a B+ last semester. But I had to drop the second quantum and second e&m very early in this semester...
  2. A

    TAMU MEEN: Phys 208 (E&M) reccomendations

    Hi I am currently a freshman going into my 2nd semester of MEEN and Phys 208 or electricity and magnetism is required. I am having trouble fitting it into my schedule and am currently unable to so I am somewhat forced to take it in the summer. Has anyone every taken it at a community college and...
  3. F

    Physical interpretation of j in E&M field equations

    Hi all. I've been trying to study microwave and electromagnetic engineering . I'm not sure how I should interpret j in some of the field equations. For example, for the field equations for a rectangular waveguide resonant cavity are: E_{y} = E_{0} sin\frac{\pi x }{a} sin \frac{l \pi z}{a}...
  4. L

    E&M Prerequisites: Calc 3 & Physics 2

    Ok, this class is killing me. The only college physics classes I've taken are physics 1 and 2. Then I walked into this class and it seems like I'm missing some physics and math classes. I meet the prerequisites, which are only Calc 3 and Physics 2. But this book we're using (from 30 years ago...
  5. H

    Calculating Charge and Electric Field Inside a Spherical Cavity

    Homework Statement A spherical charged ball of radius "a" has an empty spherical cavity, of radius b<a, at its center. There is no charge outside the ball and no sheet-charge on its outer surface. The (radial) field has given value Ea on the outer surface; inside the ball it is given as...
  6. H

    Charged Disk Homework: Solve E&M Qs

    Homework Statement A charged disk of total charge "Q" and radius "a" lies in the xy-plane, centered at the origin. The surface-charge density distribution is nonuniform, having the surface-density, at any point inside the disk at distance "r" from the center of the form σ(r)= m x r^2 , m...
  7. bcrowell

    Uncovering the Mystery of Hidden Momentum in E&M

    "hidden momentum" There's an interesting thing in E&M which is referred to as "hidden momentum" in this paper: Babson et al., Am. J. Phys. 77 (2009) 826 http://www.ate.uni-duisburg-essen.de/data/postgraduate_lecture/AJP_2009_Griffiths.pdf The simplest example is a magnetic dipole immersed in...
  8. L

    Confusion created by notation in E&M

    I just started an E&M class and right from the beginning the notation seems so confusing it has to have been done as a joke. Trying to do a problem I run into about 10 different r's I have to keep track of. Capital R Lower case r Lower case r prime The r in spherical coordinates The "squiggle" r...
  9. Z

    Difference between EE and Physics E&M?

    I'm just wondering, but what sort of difference is there between the electromagnetism that Electrical Engineering majors learn and the electromagnetism that Physics majors learn?
  10. T

    Requesting E&M reading material suggestions

    Hi, I'm looking for some additional reading material while preparing for an E&M course. I'm going through Jackson and Griffiths, and I'd like to read a few scientific papers that will be good "E&M exercises." Anybody have papers in mind? Any suggestions for an intro to plasma containment?
  11. L

    How best to prepare for Jackson E&M?

    Hello all, Long story short, I am taking E&M course that uses Jackson, but in undergrad I only took 1 quarter of E&M (electrostatics). With classes about a month away, what would a good way to prepare. I realize that it is not enough time, but I figured some prep would be better that nothing...
  12. O

    E&M textbook for a physical chemist

    Hi all, I am a graduate student in physical chemistry and I have discovered a fairly large hole in my knowledge. I am designing some experiments that will study the behavior of ions in magnetic fields. I don't have much background in E&M fields past a general physics course. Do you have any...
  13. J

    Calculating Net Electric Flux through Submarine Hull: E&M Homework Question

    Homework Statement The following charges are located inside a submarine: 2.00 µC, -9.00 µC, 27.0 µC, and -54.0 µC. (a) Calculate the net electric flux through the hull of the submarine. Homework Equations Flux = q/e0 The Attempt at a Solution I found the net charge, which happens...
  14. S

    Advanced E&M Book Recommendations

    could any1 recommend a good E&M book that might be worth reading after having just finished Griffith's book on the subject... so probably a book a little more advanced than Griffith's
  15. D

    Is classical mechanics needed before E&M (Griffiths)

    This summer I plan to self study quite a bit and want to learn as much as I can. I'm an EE major and have taken Calc 1-3, and DiffyQ/Linear algebra as well as intro physics classes. I will be taking classical mechanics in Spring 2013 but wanted to dive into Griffiths E&M book this summer. Is...
  16. M

    Deriving Maxwell's Eqs from Conservation Laws: E&M Fields

    Homework Statement Can you derive Maxwell's equations from conservation of charge, energy and angular momentum for E&M fields? Homework Equations The Attempt at a Solution
  17. C

    2011 AP Physics C E&M frq #1 clarification

    Problem 1 on last year's normal (not form b) frq for e&m part a asked to use Gauss' law to prove essentially that at any point P within a thin spherical shell of charge density σ = q/A and radius r that the electric field at this ambiguous point P is zero. The solutions for this problem went...
  18. T

    Circuits in Upper E&M: Learn Beyond Freshman Physics 2

    we are learning a lot about circuits in freshman physics 2 - does junior/senior E&M do circuits - or do i need to take a circuit course if i want to learn more about circuits beyond freshman physics 2? thx
  19. I

    Need better E&M strategies.

    Does anyone know of any way to compartmentalize electromagnetism into much simpler material to work with? Let me clarify what I mean—Mechanics is very easy (at an undergraduate level) because knowing ∑F=ma and basic knowledge of Calculus and Differential Equations can lead to instantaneously...
  20. D

    Good introductory E&M textbooks?

    The book I currently use for my class is not great with very few examples, watered-down theory, and is bloated. I've searched the forums and found that Halliday and Serway are well received, but I still don't know. Even though my course is supposed to be calculus-based and all the concepts are...
  21. M

    DSP vs RF/Microwaves and E&M

    Hey guys and, of course, ladies. I was wondering if anyone knows the job outlook for Electrical Engineering concentrating on DSP and/or RF/Microwaves and E&M. I'm planning to get my M.S. EE at NYU-Poly on either one of the path. I would like to know: which of the 2 has a better job...
  22. A

    How can E&M Waves be polarized?

    I'm learning about polarization and something has me a little confused. I feel like I understand polarization: blocking out all the light except for those waves in a particular direction: horizontal, vertical, e.g. But if a "single" light wave is made of a propagating electric and magnetic...
  23. W

    Taking Nonlinear Optics/Ultrafast Physics without E&M?

    My school opened a new class this semester (Labeled as "Lasers and applications", but the syllabus has it as "Nonlinear optics and Ultrafast physics"), and I figured that as a junior-level physics major I should've been able to take it, since the course itself doesn't list any prerequisites...
  24. G

    I need some motivation to study E&M

    I don't know why, but I just can't get into E&M. I didn't find it interesting as an undergrad, and it's not interesting to me now as a grad student. However, I need to know the material--gotta pass the quals!--and I even want to know the material ('cause it's an important part of physics and I...
  25. C

    E&M Solenoid and Capacitor problem

    Homework Statement Consider a large solenoid aligned with the z-axis with a uniform magnetic field inside given by Bo = Boz[hat]. Contained WITHIN the solenoid is a very large parallel plate capacitor and the plates (one at the x=0 plane and the other at the x = d plane) have surface charge...
  26. A

    Griffiths vs Purcell vs Schwartz for undergrad E&M

    So I'll be taking undegrad E&M 1 next semester and was looking for a good book to prepare for it before the semester starts. People seem to like Griffiths and Purcell generally. Shwartz also seems to have some good reviews (and is quite cheap) on Amazon but I'm not quite sure what level it is...
  27. S

    E&M Fiber Amplifier Homework Solutions

    Homework Statement One of the most exciting developments in lightwave engineering is the Erbidium doped fiber amplifier (ERDF A). It is very quiet(low noise) has a bandwidth of hundreds of GHz and relatively low cost.The fiber is "pumped" by a semiconductor laser operating at 850nm and the...
  28. P

    E&M: anyone knows what this equation is?

    I_c = A [ e^{(qV_b)/kT} -1] A is a constant How can i derive it? Where can I find more about this equation? Online source would be great.
  29. J

    E&M: Find relationship of the constants for a given magnetic field

    Homework Statement Given the magnetic field B= α*x*y x^ + β*y^2 y^. What is the relationship between α and β. Find the current density J. Homework Equations I know that the relevant equations are Δ dot B = 0, Δ x B = μJ, Δ dot A = 0, Δ x A = B The Attempt at a Solution I know...
  30. C

    MV Calc Book for E&M: Best Options for Rigor & Theory

    I want a MV Calc book that has a good covering of vector field operations, mostly for studying Maxwell's equations and stuff later on. Rigor would be nice; I would prefer a book that proves most theorems, but not one as crazy as Spivak (I have only a few months!). Interesting theoretical...
  31. C

    Courses Course-load for next semester (E&M + Mechanics)

    Next semester I will be taking the following courses - Elementary Differential Equations Methods for the solution of elementary types of ordinary differential equations with geometrical, physical and chemical applications. - General Chemistry I (with lab) Fundamental principles of chemistry...
  32. P

    How Do Electric and Magnetic Fields Transform in Different Reference Frames?

    Homework Statement There is an electromagnetic potential four-vector, whose components are (V,Ax,Ay,Az) where V is the electrostatic potential and A is the magnetic vector potential. There is a time-independent electromagnetic field in the lab frame. Its electric and magnetic potentials are...
  33. Matterwave

    E&M Maxwell equations and Stress tensor

    Hello, so I was asked a question in two parts (Peskin & Schroeder problem 2.1). The first part asked me to derive the source-free Maxwell's equations from the action: S=\int{d^4 x \frac{-1}{4}F_{\mu\nu}F^{\mu\nu}} Given that the vector potential itself is the dynamical variable. I derived...
  34. D

    How can I improve my understanding of conceptual physics for E&M?

    Just took my first E&M physics 2 test tonight, it was almost all conceptual. I feel like such a fool because it seemed basic yet most of the questions I felt uncomfortable with. My last physics class was more of the equation hunt type, working in symbols, see how things relate mathematically...
  35. J

    Problems Integrating an Infinite Series From E&M

    Hi, guys. For an E&M/quantum mechanics problem I have to integrate the series below: Homework Statement Integrate \int{r^{2}e^{y r} \, dr}.2. The attempt at a solution Using integration by parts and and "differentiating under the integral" give the same answer: I= \frac{2...
  36. C

    AP Physics C Mech. and E&M self study

    Hey so I'm trying to self study for both AP Physics exams for May 2012, and I've been going through halliday & resnick 7th ed. as a text, however, I feel that this book isn't helping me so much for the mechanics side of things (as I haven't begun to study E&M stuff yet) for two reasons. First...
  37. L

    E&M and beyond books for very mathematically adept

    I'm looking for a Electricity and Magnetism (and beyond if possible) textbook that suits my capabilities better. I just read "Electric flux is proportional to the amount of electric field lines penetrating some surface" in my current textbook. I find that this is for the mathematical incapable...
  38. T

    Recommended E&M summer book for a soon to be EE student

    Hello, I'm about to start university as an electrical engineer student, and I'd like to have a better grasp of the theory behind the stuff we'll see in the program. I've been through Cegep here ( I think it's the equivalent of the last high school year + the first University year in the...
  39. S

    Classical Mechanics and E&M introductory books

    Hi, I looking for books that have practice problems (with explanations would be nice) on general introductory level Calc. based Classical Mechanics. And for Electromagnetism I'm looking for an introductory book that has practice problems. I haven't taken Multivariable Calc. yet (I'll be...
  40. C

    Help with E&M Questions: Answers, Explanations & Reviews

    Help with E&M? 1) http://tinyimage.net/images/25790944428468568236.png I don't even... The answer is B.. What should I review?? 2)http://tinyimage.net/images/81684598844478119651.png Why can't I use the formula V^2/R for this one?? answer C btw ( I did get it right, but just because I...
  41. W

    Pre-Req and Time Commitment for E&M

    I am contemplating taking E&M next quarter, but I'm also expecting 4 other time-intensive classes, including 2 labs. I also don't have classes such as Vector Calculus, Linear Algebra, or Analysis(Real/Complex). The class only requires ODEs and the introductory physics courses, but it does follow...
  42. F

    Should I take E&M and Mechanics at the same time

    Do you guys think it's a good idea to take both E&M and Mechanics at the same time in the summer?
  43. N

    Help polishing off a Classical E&M HW question

    Homework Statement This isn't the whole homework problem but I need to show that (p dot gradient operator)E is equal to Gradient operator(p Dot E) Homework Equations P= Dipole Moment E= non constant electric field. The Attempt at a Solution Like I said this is the last part of...
  44. R

    Can you help me prepare me for my E&M lab practical?

    I have to perform a "lab practical" tomorrow for my E&M class and it involves using a multimeter to determine what is inside a "black box" - either a battery/resistor combo or a capacitor. Homework Statement Taken from the lab practical write-up: "You’ll be given a box with two...
  45. K

    AP Physics B or C E&M: Choosing the Right Course

    I am currently a junior in high school taking physics A. I find it very easy and natural and have an A for 1st semester and a 97 on the midterm. I want to take AP physics but i am not sure which one. In college i am most likely going into construction so I will need a lot of math and physics...
  46. B

    E&M proof for a integralnot sure whats it called

    Homework Statement Δ<--- the gradient X<---cross product (o∫) closed integral ∫((ΔT)Xda = (o∫)-Tdl btw what is the realtion ship above called? Homework Equations da= axdydz +aydxdz +azdxdy dl=axdx + aydy + azdy The Attempt at a Solution not sure where to go on from here...
  47. A

    Multivariable Calculus and E&M Over Summer?

    Is this a bad idea? I want to get my intro courses out of the way, but don't want to sacrifice a full understanding.
  48. P

    An EE want to specialize in E&M field theory

    I am studying EE and want to know more about electric and magnetic field theory in more detail probably at the Quantum level.i realized that studying physics will suffice that but i am getting negative feedback from others that it will be not good for my career,they are saying that these things...
  49. F

    Work to Construct Conducting Spheres

    1. Homework Statement How much work does it take to construct a conducting sphere of radius 'a' and charge '+q' by pulling charges ('dq') from an infinite distance? Then construct another conducting sphere of radius 'b' and charge '-q' around the sphere of radius 'a'. Given 'a'<'b'. 2...
  50. C

    (E&M) Charge and electric field in a two plate system.

    1. Two metal plates, 10 mm thick, are held a distance z=40 mm apart with a potential difference of 10 V across them. As you look at them the positive plate is on the left. In between the plates is a vacuum. Ignoring edge effects and assuming unit area for the plates, calculate both the charge...
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