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Graduate [OPTICS] Faraday Rotator with waveplates

Mar 4, 2014 · Replies 6 · Mar 11, 2014

Replies: 6

Views: 2K

Undergrad Gauss Law: Proofs and Electromagnetism Resources

Mar 9, 2014 · Replies 5 · Mar 10, 2014

Replies: 5

Views: 2K

Undergrad Capacitors don't require a dielectric material they?

Mar 9, 2014 · Replies 4 · Mar 10, 2014

Replies: 4

Views: 1K

High School What does it mean to be ''in series'' or ''in parallel''

Mar 10, 2014 · Replies 12 · Mar 10, 2014

Replies: 12

Views: 8K

Graduate Do electrons exchange photons to create the electromagnetic force?

Mar 8, 2014 · Replies 5 · Mar 10, 2014

Replies: 5

Views: 2K

Undergrad Why do inductors shift current by the same amount?

Mar 9, 2014 · Replies 1 · Mar 10, 2014

Replies: 1

Views: 1K

High School Question about voltage in a battery

Mar 9, 2014 · Replies 5 · Mar 10, 2014

Replies: 5

Views: 2K

Graduate Trouble with self-energy formula

Mar 7, 2014 · Replies 4 · Mar 10, 2014

Replies: 4

Views: 2K

Undergrad What is the Electric Field Inside and Outside of a Sphere?

Mar 9, 2014 · Replies 1 · Mar 10, 2014

Replies: 1

Views: 1K

Graduate Some questions about dielectrics/insulators

Mar 8, 2014 · Replies 1 · Mar 8, 2014

Replies: 1

Views: 1K

Graduate How much of the universe is in the form of electromagnetic radiation?

Mar 8, 2014 · Replies 3 · Mar 8, 2014

Replies: 3

Views: 2K

High School Electrons move in opposite direction of current?

Mar 8, 2014 · Replies 4 · Mar 8, 2014

Replies: 4

Views: 3K

Graduate The Maxwell equation and the Fourier Spectrum of an Electric Field

Mar 8, 2014 · Replies 1 · Mar 8, 2014

Replies: 1

Views: 2K

Graduate What Is the Origin of Electric Charge and Its Properties?

Mar 7, 2014 · Replies 9 · Mar 8, 2014

Replies: 9

Views: 3K

Undergrad What is it that causes electric current to drop after a step up ?

Mar 6, 2014 · Replies 7 · Mar 7, 2014

Replies: 7

Views: 2K

Graduate Charge density of a disk with radius a in cylindrical coordinates

Mar 5, 2014 · Replies 5 · Mar 6, 2014

Replies: 5

Views: 2K

Undergrad How to predict a magnet's field strength?

Mar 5, 2014 · Replies 1 · Mar 5, 2014

Replies: 1

Views: 2K

Graduate Electric field in a solenoid/inductor.

Mar 2, 2014 · Replies 5 · Mar 5, 2014

Replies: 5

Views: 3K

Undergrad Do all electric motors follow these two laws?

Feb 13, 2014 · Replies 26 · Mar 5, 2014

Replies: 26

Views: 3K

Graduate Does the rotation of an electron have any meaning?

Mar 4, 2014 · Replies 1 · Mar 4, 2014

Replies: 1

Views: 2K

Undergrad How Did Michael Faraday's Discovery Change Our Understanding of Fields?

Mar 4, 2014 · Replies 3 · Mar 4, 2014

Replies: 3

Views: 2K

Undergrad Solving the First Circuit with Kirchhoff's Laws

Mar 4, 2014 · Replies 13 · Mar 4, 2014

Replies: 13

Views: 3K

Undergrad Electric and magnetic fields VS electromagnetic waves

Feb 26, 2014 · Replies 19 · Mar 4, 2014

Replies: 19

Views: 3K

Undergrad Magnetic Moment Of Steel and Iron Wire

Feb 26, 2014 · Replies 3 · Mar 4, 2014

Replies: 3

Views: 3K

Undergrad Negative Voltage when Magnet Falls Through Solenoid: Gaining Energy?

Mar 2, 2014 · Replies 2 · Mar 3, 2014

Replies: 2

Views: 2K

Graduate Uniqueness of Maxwell's equations

Feb 19, 2014 · Replies 9 · Mar 3, 2014

Replies: 9

Views: 3K

Undergrad Why Is There No Internal Electric Field in a Neutral Conductor?

Mar 2, 2014 · Replies 2 · Mar 2, 2014

Replies: 2

Views: 1K

Undergrad Electric potential when there is a negative test charge?

Mar 1, 2014 · Replies 2 · Mar 2, 2014

Replies: 2

Views: 2K

Undergrad Using Potentiometer to find balancing emf.

Mar 1, 2014 · Replies 2 · Mar 2, 2014

Replies: 2

Views: 3K

Undergrad Capacitors in Series: Understanding Top Plate Action

Feb 28, 2014 · Replies 6 · Mar 1, 2014

Replies: 6

Views: 2K

Undergrad Confused about negative charges in potential field of a pos charge?

Mar 1, 2014 · Replies 1 · Mar 1, 2014

Replies: 1

Views: 1K

Undergrad Current in a Circuit with Multiple Voltage Sources

Feb 28, 2014 · Replies 9 · Mar 1, 2014

Replies: 9

Views: 4K

Undergrad Preference of Angular frequency over frequency for sinusoidal graphs

Mar 1, 2014 · Replies 4 · Mar 1, 2014

Replies: 4

Views: 2K

Undergrad Ohm's Law & Non-Linear Circuits

Feb 28, 2014 · Replies 4 · Feb 28, 2014

Replies: 4

Views: 2K

High School What EXACTLY does a resistor do ?

Feb 26, 2014 · Replies 14 · Feb 28, 2014

Replies: 14

Views: 4K

Graduate Using Gauss's Law to find E for an infinite volume charge density

Feb 28, 2014 · Replies 3 · Feb 28, 2014

Replies: 3

Views: 4K

High School What does north and south mean on a magnet?

Feb 27, 2014 · Replies 2 · Feb 27, 2014

Replies: 2

Views: 2K

Graduate How do I calculate eddy current losses in mains transformers?

Feb 27, 2014 · Replies 1 · Feb 27, 2014

Replies: 1

Views: 2K

Undergrad Where Do Electrons Move When Insulated Metal Spheres Are Brought Together?

Feb 11, 2014 · Replies 7 · Feb 27, 2014

Replies: 7

Views: 2K

Graduate Measuring time delay before charged plates repel

Feb 26, 2014 · Replies 4 · Feb 27, 2014

Replies: 4

Views: 2K

Graduate Will an infinite plane of charge flux generate flux through itself?

Feb 27, 2014 · Replies 2 · Feb 27, 2014

Replies: 2

Views: 2K

High School How Is the Magnetic Field Oriented Around a Current-Carrying Wire?

Feb 27, 2014 · Replies 3 · Feb 27, 2014

Replies: 3

Views: 2K

High School Extremely Simple Notation Question on a Circuit

Feb 26, 2014 · Replies 1 · Feb 26, 2014

Replies: 1

Views: 1K

Undergrad Electrical Forces help. Two questions

Feb 26, 2014 · Replies 4 · Feb 26, 2014

Replies: 4

Views: 5K

Undergrad Conductors in Electrostatic Equilibrium

Feb 26, 2014 · Replies 2 · Feb 26, 2014

Replies: 2

Views: 2K

Undergrad A little confusion with parallel circuits

Feb 24, 2014 · Replies 15 · Feb 26, 2014

Replies: 15

Views: 3K

Graduate Frequency of Photons: Conceptualizing & Oscillation

Feb 24, 2014 · Replies 3 · Feb 25, 2014

Replies: 3

Views: 2K

Undergrad Voltage at a spot where the force on a charge is zero

Feb 25, 2014 · Replies 2 · Feb 25, 2014

Replies: 2

Views: 1K

Undergrad Using the Flux Formula for Different Charge Distributions

Feb 25, 2014 · Replies 1 · Feb 25, 2014

Replies: 1

Views: 1K

Graduate Acoustic levitation shape question (Japanese scientists link)

Feb 24, 2014 · Replies 2 · Feb 25, 2014

Replies: 2

Views: 1K

Graduate Does Moving a Magnet in Free Space Radiate?

Feb 23, 2014 · Replies 16 · Feb 25, 2014

Replies: 16

Views: 3K

Graduate How can you make the substitution s = rθ when θ changes with every element?

Feb 23, 2014 · Replies 6 · Feb 24, 2014

Replies: 6

Views: 1K

Undergrad Electric fields vs magnetic fields?

Feb 24, 2014 · Replies 3 · Feb 24, 2014

Replies: 3

Views: 2K

Undergrad Find the electric flux through the parabolodial surface

Feb 23, 2014 · Replies 6 · Feb 24, 2014

Replies: 6

Views: 5K

Undergrad Electricity and Air: A Fascinating Interaction

Feb 24, 2014 · Replies 2 · Feb 24, 2014

Replies: 2

Views: 2K

High School Question about magnetic shielding

Feb 24, 2014 · Replies 1 · Feb 24, 2014

Replies: 1

Views: 2K

Undergrad The electric displacement vector field and Gauss' law?

Feb 24, 2014 · Replies 1 · Feb 24, 2014

Replies: 1

Views: 3K

Undergrad Field lines from a line of charge

Feb 24, 2014 · Replies 2 · Feb 24, 2014

Replies: 2

Views: 2K

Graduate Magnetic Monopole (Magnetic Charge)

Feb 24, 2014 · Replies 2 · Feb 24, 2014

Replies: 2

Views: 2K

High School Batteries connected in parallel

Feb 21, 2014 · Replies 19 · Feb 24, 2014

Replies: 19

Views: 3K

High School Electric Potential Intuition Needed

Feb 21, 2014 · Replies 15 · Feb 23, 2014

Replies: 15

Views: 3K

Undergrad Electricity Formula: Difference between E=σ/2ε0 and E=σ/ε0

Feb 23, 2014 · Replies 1 · Feb 23, 2014

Replies: 1

Views: 2K

Undergrad Rotation of DNA in electric field

Feb 22, 2014 · Replies 2 · Feb 23, 2014

Replies: 2

Views: 2K

Undergrad How Do Magnetic Field Lines Form Between Two Pairs of Magnetic Dipoles?

Feb 21, 2014 · Replies 3 · Feb 22, 2014

Replies: 3

Views: 2K

Undergrad Understanding the Fundamentals of Solenoid Valve Operation

Feb 22, 2014 · Replies 4 · Feb 22, 2014

Replies: 4

Views: 3K

High School Electric Potential: Understanding the Difference

Feb 22, 2014 · Replies 2 · Feb 22, 2014

Replies: 2

Views: 1K

Graduate Static magnetic field , rotating magnet

Feb 15, 2014 · Replies 1 · Feb 21, 2014

Replies: 1

Views: 5K

Undergrad Electric potential is separation of charge?

Feb 4, 2014 · Replies 8 · Feb 21, 2014

Replies: 8

Views: 7K

Graduate Point charges and multipole expansion

Feb 19, 2014 · Replies 7 · Feb 21, 2014

Replies: 7

Views: 2K

Graduate How is magnetism generated around an electron?

Feb 20, 2014 · Replies 4 · Feb 21, 2014

Replies: 4

Views: 2K

Graduate Solenoid filled with magnetic material

Feb 13, 2014 · Replies 11 · Feb 20, 2014

Replies: 11

Views: 5K

Undergrad Does the Drude model predict the emission of em waves?

Feb 20, 2014 · Replies 2 · Feb 20, 2014

Replies: 2

Views: 2K

Graduate Levitation using earth's magnetic field - electric propeller .

Dec 24, 2013 · Replies 12 · Feb 20, 2014

Replies: 12

Views: 5K

Undergrad Formula for electric field for capacitor and cylinder

Feb 19, 2014 · Replies 1 · Feb 20, 2014

Replies: 1

Views: 2K

High School Why is the electric field shaped this way?

Feb 15, 2014 · Replies 12 · Feb 20, 2014

Replies: 12

Views: 3K

Undergrad Transistors & Conventional Current

Feb 19, 2014 · Replies 4 · Feb 19, 2014

Replies: 4

Views: 4K

Graduate Dirac Delta source for vectorial equation

Feb 19, 2014 · Replies 1 · Feb 19, 2014

Replies: 1

Views: 2K

High School Electric Intensity: Definition & Clarification

Feb 18, 2014 · Replies 13 · Feb 19, 2014

Replies: 13

Views: 2K

Undergrad Gravity effect on electric motor

Feb 18, 2014 · Replies 1 · Feb 18, 2014

Replies: 1

Views: 2K

Undergrad Measuring Magnetic Field Intensity (H) and Magnetic Flux Density (B).

Nov 22, 2010 · Replies 12 · Feb 18, 2014

Replies: 12

Views: 28K

Undergrad Electric potential and negative potential gradient

Feb 15, 2014 · Replies 11 · Feb 18, 2014

Replies: 11

Views: 15K

Graduate Moving magnet and conductor - Residual worry

Feb 17, 2014 · Replies 11 · Feb 18, 2014

Replies: 11

Views: 2K

Graduate How Is Energy Lost in a Resistanceless System?

Feb 17, 2014 · Replies 10 · Feb 17, 2014

Replies: 10

Views: 2K

Graduate Understanding the Stationary Electron: Impact on Magnetic Fields

Apr 12, 2011 · Replies 21 · Feb 17, 2014

Replies: 21

Views: 6K

Graduate Predict Magnetic Permeability?

Feb 17, 2014 · Replies 2 · Feb 17, 2014

Replies: 2

Views: 2K

Undergrad Relation between charge and voltage in spherical capacitors

Feb 13, 2014 · Replies 8 · Feb 17, 2014

Replies: 8

Views: 3K

Undergrad EM Waves & Forces: Does a Particle Feel Force?

Feb 16, 2014 · Replies 5 · Feb 16, 2014

Replies: 5

Views: 1K

Undergrad Why doesn't the outer charge affect the electric flux in Gauss's law?

Feb 16, 2014 · Replies 2 · Feb 16, 2014

Replies: 2

Views: 2K

Graduate How is the Total Energy of a Magnetic Field in Matter Calculated?

Feb 14, 2014 · Replies 3 · Feb 16, 2014

Replies: 3

Views: 2K

Graduate Exploring Laplace's Equation: Separation of Variables Method in Electrodynamics

Feb 16, 2014 · Replies 3 · Feb 16, 2014

Replies: 3

Views: 2K

Graduate How do I get energy from a perpetually moving electron?

Feb 16, 2014 · Replies 2 · Feb 16, 2014

Replies: 2

Views: 1K

Graduate A question about damped resonant frequency

Feb 14, 2014 · Replies 5 · Feb 16, 2014

Replies: 5

Views: 3K

Undergrad Resistance & Electrical Circuits

Feb 15, 2014 · Replies 5 · Feb 16, 2014

Replies: 5

Views: 3K

Undergrad Why not Solar -> Electrolysis -> Burn to make steam energy?

Feb 13, 2014 · Replies 13 · Feb 15, 2014

Replies: 13

Views: 2K

Undergrad Calculating the requirements for magnetic levitation

Feb 14, 2014 · Replies 1 · Feb 15, 2014

Replies: 1

Views: 3K

Undergrad Induced charges and their distribution

Feb 12, 2014 · Replies 3 · Feb 15, 2014

Replies: 3

Views: 2K

Graduate Discovering Photon Flux from UV Source

Feb 14, 2014 · Replies 3 · Feb 15, 2014

Replies: 3

Views: 2K

Graduate Current in an infinite current sheet

Feb 15, 2014 · Replies 1 · Feb 15, 2014

Replies: 1

Views: 1K

Undergrad Stationary Electron accelerated through potential difference

Feb 14, 2014 · Replies 4 · Feb 14, 2014

Replies: 4

Views: 3K

High School Electrons Collide: What Happens?

Feb 13, 2014 · Replies 4 · Feb 13, 2014

Replies: 4

Views: 2K

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