Skip to main content

Menu

Navigation

More options

Style variation

Contact us

Electromagnetism Forum

Threads

Filters

High School I want to roll a ball on a material to get the latgest static charge in the ball

templedog
Dec 15, 2008 · Replies 1 · Dec 16, 2008

Replies: 1

Undergrad Are Electromagnetic Waves the Key to Wireless Energy Transmission?

_F_
Dec 12, 2008 · Replies 10 · Dec 15, 2008

Replies: 10

Undergrad How to measure current induced through loops

Cspeed
Dec 14, 2008 · Replies 2 · Dec 15, 2008

Replies: 2

Graduate Using Ampere's Law to Calculate Magnetic Field at a Point

swraman
Dec 13, 2008 · Replies 5 · Dec 15, 2008

Replies: 5

Graduate How Is Negative Permittivity Achieved Using the Wire-Mesh Method?

falcao
Dec 13, 2008 · Replies 1 · Dec 15, 2008

Replies: 1

Graduate Are There Any Massless Charged Particles and How is Particle Charge Calculated?

spidey
Dec 12, 2008 · Replies 3 · Dec 12, 2008

Replies: 3

Undergrad Calculate Electric Field in Medium

apalmer3
Dec 7, 2008 · Replies 2 · Dec 11, 2008

Replies: 2

Undergrad Errors in Analogue & Digital Multimeters: Why?

Tasell
Dec 9, 2008 · Replies 4 · Dec 11, 2008

Replies: 4

Graduate Shawyer's Electromagnetic Drive

sanman
Sep 25, 2008 · Replies 12 · Dec 11, 2008

Replies: 12

Graduate EMI - induced current on two parallel wire

jewhitmo
Dec 8, 2008 · Replies 7 · Dec 11, 2008

Replies: 7

Undergrad What Determines the Polarity of Particle Charges?

nuby
Dec 9, 2008 · Replies 7 · Dec 11, 2008

Replies: 7

Graduate Multipole Expansion in Electrodynamics: Simplifying with Taylor Series

h0dgey84bc
Dec 10, 2008 · Replies 2 · Dec 11, 2008

Replies: 2

Undergrad Do magnetic lines of force accurately represent magnetic fields?

nottheone
Dec 9, 2008 · Replies 3 · Dec 10, 2008

Replies: 3

Undergrad Speed of Electromagnetic Radiation

jdiggler
Dec 9, 2008 · Replies 6 · Dec 9, 2008

Replies: 6

Undergrad Non uniformly wound solenoid (no Mag. field?)

ifwade
Dec 9, 2008 · Replies 2 · Dec 9, 2008

Replies: 2

Graduate Magnetic field generated by a circular current loop

ramses728
Nov 26, 2007 · Replies 12 · Dec 9, 2008

Replies: 12

Undergrad Where Can I Find a Crash Course for Electrodynamics?

FourierX
Dec 7, 2008 · Replies 2 · Dec 7, 2008

Replies: 2

Undergrad Do supercunductors pull and attract magnets, or vice versa?

ForumFire
Dec 7, 2008 · Replies 1 · Dec 7, 2008

Replies: 1

Graduate Can a Vibrating, Charged Block in Deep Space Produce Radio Waves?

GENIERE
Dec 5, 2008 · Replies 1 · Dec 6, 2008

Replies: 1

Graduate Why does irradiating a low pressure gas result in a continuous spectrum?

SciencePF
Dec 6, 2008 · Replies 1 · Dec 6, 2008

Replies: 1

Undergrad What gives rise to natural frequency?

audreyh
Dec 6, 2008 · Replies 3 · Dec 6, 2008

Replies: 3

High School What is the Definition of Change in Magnetic Flux?

Thrust
Dec 4, 2008 · Replies 2 · Dec 4, 2008

Replies: 2

Graduate How does a curled magnetic field produce a time-varying magnetic field?

jbunten
Dec 3, 2008 · Replies 5 · Dec 4, 2008

Replies: 5

Graduate How can I optimize the velocity and power of a Gauss Cannon with magnets?

John_Rainbow
Nov 26, 2008 · Replies 5 · Dec 4, 2008

Replies: 5

Undergrad Finding Frequency Transparency: What Info Do You Need?

kdm06d
Dec 3, 2008 · Replies 1 · Dec 3, 2008

Replies: 1

Graduate Meissner Effect- magnetic focusing

Savant13
Dec 1, 2008 · Replies 2 · Dec 2, 2008

Replies: 2

High School How can I use an electric field to create perpetual motion?

simo
Nov 25, 2008 · Replies 17 · Dec 1, 2008

Replies: 17

Undergrad Understanding LRC Theory Intuitively

bobthenormal
Dec 1, 2008 · Replies 7 · Dec 1, 2008

Replies: 7

Graduate Inductor-Capacitor Circuit: E Field & Differential Equation

atavistic
Nov 26, 2008 · Replies 2 · Dec 1, 2008

Replies: 2

Graduate I'm interested in the idea of voltage

sanjoser
Nov 23, 2008 · Replies 5 · Dec 1, 2008

Replies: 5

Graduate Solenoidal Fields: Understanding Curl and Divergence

fisico30
Nov 30, 2008 · Replies 2 · Dec 1, 2008

Replies: 2

Graduate What Is Galilean Electrodynamics and Its Controversies?

Zarlucicil
Nov 25, 2008 · Replies 5 · Nov 30, 2008

Replies: 5

High School Magnet & Currents: Can Moving a Magnet Induce a Current?

Coach
Nov 30, 2008 · Replies 2 · Nov 30, 2008

Replies: 2

Undergrad How Does Electric Potential Energy Relate to Capacitors?

abcdefg10645
Nov 29, 2008 · Replies 3 · Nov 30, 2008

Replies: 3

Graduate Magnetostatics: Explaining Jackson's Derivation from 5.20 to 5.21

shehry1
Nov 29, 2008 · Replies 1 · Nov 29, 2008

Replies: 1

High School How does the induction cooker work?why aluminium pot does not work ?

magnetar
Aug 27, 2008 · Replies 11 · Nov 29, 2008

Replies: 11

High School Electric current flow in a circuit when a capacitor is fully charged?

atavistic
Nov 26, 2008 · Replies 8 · Nov 29, 2008

Replies: 8

Graduate Small electro-optic modulator and phase-shifting light

nkinar
Nov 28, 2008 · Replies 1 · Nov 28, 2008

Replies: 1

Graduate Stationary charge and accelerated observer

spidey
Nov 27, 2008 · Replies 2 · Nov 28, 2008

Replies: 2

Graduate How Many Teslas Are Needed to Deflect Cosmic Rays at Near Light Speed?

scienceman111
Nov 27, 2008 · Replies 1 · Nov 28, 2008

Replies: 1

Graduate The Two forms of Maxwell's equations

DeepSeeded
Nov 26, 2008 · Replies 3 · Nov 27, 2008

Replies: 3

Graduate Non-Electrostatic Problem: Closest Distance of Approach

atavistic
Nov 25, 2008 · Replies 4 · Nov 27, 2008

Replies: 4

Undergrad Can Magnets Really Create Perpetual Motion?

MadMike1986
Nov 26, 2008 · Replies 4 · Nov 26, 2008

Replies: 4

Undergrad How Does the Inverse Square Law Apply to Force of Attraction Between Charges?

esvion
Nov 24, 2008 · Replies 4 · Nov 26, 2008

Replies: 4

Graduate Maxwell relation with 3 variables?

anony
Nov 22, 2008 · Replies 1 · Nov 26, 2008

Replies: 1

Graduate I want to create a flotation device

eNathan
Nov 21, 2008 · Replies 5 · Nov 25, 2008

Replies: 5

Undergrad The way of evaluating the electric field

abcdefg10645
Nov 25, 2008 · Replies 7 · Nov 25, 2008

Replies: 7

Graduate Electric Eddy Field: Calculating with Maxwell's Equations

hildebrand
Nov 24, 2008 · Replies 1 · Nov 24, 2008

Replies: 1

Graduate Create EMR at Long Wavelengths: Experimentally Possible?

flatmaster
Nov 21, 2008 · Replies 8 · Nov 23, 2008

Replies: 8

Graduate Different dielectric material with different relative permittivity

FourierX
Nov 23, 2008 · Replies 2 · Nov 23, 2008

Replies: 2

Undergrad Inductance and Capacitance per Temperature

americanforest
Nov 23, 2008 · Replies 1 · Nov 23, 2008

Replies: 1

Graduate Why Is the Left Term of Equation 539 Eliminated in Electrostatic Calculations?

abcdefg10645
Nov 22, 2008 · Replies 5 · Nov 23, 2008

Replies: 5

Graduate Bound and Free Charge in conductor and dielectric

FourierX
Nov 20, 2008 · Replies 5 · Nov 21, 2008

Replies: 5

Graduate Maxwell Eqns - Prob converting from fundamental to time-harmonic form

JamesGoh
Nov 16, 2008 · Replies 11 · Nov 21, 2008

Replies: 11

Graduate Is there a force exerted on both particles in the moving charge paradox?

pixel01
Nov 19, 2008 · Replies 12 · Nov 20, 2008

Replies: 12

High School Changing or moving magnetic field

granpa
Nov 6, 2007 · Replies 31 · Nov 20, 2008

2

Replies: 31

Undergrad Charged inductor with no discharge path?

ShawnD
Nov 18, 2008 · Replies 1 · Nov 19, 2008

Replies: 1

Graduate Capacitative current through cell membrane

boltdude
Nov 18, 2008 · Replies 4 · Nov 19, 2008

Replies: 4

Undergrad Are Both Conditions Necessary to Confirm a Conservative Electric Field?

Spoony
Nov 18, 2008 · Replies 3 · Nov 18, 2008

Replies: 3

Graduate Electromagnetism, vector calculus.

Spoony
Nov 18, 2008 · Replies 5 · Nov 18, 2008

Replies: 5

Undergrad Magnetic Recording: How Does it Work?

ammelissa
Nov 17, 2008 · Replies 6 · Nov 17, 2008

Replies: 6

Undergrad Why is the magnetic field stronger at this specific point?

selishaphysic
Nov 17, 2008 · Replies 3 · Nov 17, 2008

Replies: 3

Graduate Frequency of electromagnetic radiation of an accelerated charge

ghadir-jafari
Nov 16, 2008 · Replies 1 · Nov 17, 2008

Replies: 1

Undergrad P.d. increases in a step up transformer

sachin123
Nov 16, 2008 · Replies 5 · Nov 17, 2008

Replies: 5

Undergrad Why Is the Electric Displacement Field Important in Understanding Capacitors?

Vanush
Nov 16, 2008 · Replies 1 · Nov 17, 2008

Replies: 1

Undergrad Why Is Magnetism Stronger at the Tip of a Tapered Blade?

feynomite
Nov 15, 2008 · Replies 1 · Nov 16, 2008

Replies: 1

Accurate Magnet Computer Simulator

RestlessMind
Nov 8, 2008 · Replies 7 · Nov 15, 2008

Replies: 7

Graduate Enhancing Electric Field Concentration on Electrodes through Focused Techniques

thinktank1985
Nov 13, 2008 · Replies 8 · Nov 14, 2008

Replies: 8

High School Electro and general magnet questions, need answers

booth413
Nov 13, 2008 · Replies 2 · Nov 14, 2008

Replies: 2

Graduate What Is the Origin of the Constant e in the Maxwell Distribution of Speeds?

casanova2528
Nov 12, 2008 · Replies 3 · Nov 13, 2008

Replies: 3

Undergrad How Do Magnetic Fields Interact at Perpendicular Wire Intersections?

quasar_4
Nov 13, 2008 · Replies 1 · Nov 13, 2008

Replies: 1

High School Conversion of Electrical Energy To Heat Energy

GAGS
Nov 12, 2008 · Replies 3 · Nov 13, 2008

Replies: 3

High School How does antenna transmits electromagnetic waves?

Physicsissuef
Jan 6, 2008 · Replies 17 · Nov 13, 2008

Replies: 17

Graduate Deriving EM Wave Equations from Faraday's & Ampere-Maxwell's Laws

TheFerruccio
Nov 10, 2008 · Replies 7 · Nov 13, 2008

Replies: 7

Graduate What Are the Energy Levels of Nuclei and Their Connection to Gamma-Ray Photons?

Denton
Oct 10, 2008 · Replies 1 · Nov 13, 2008

Replies: 1

Undergrad Force between two electromagnets due to direct flux and radial flux

jinoy
Oct 16, 2008 · Replies 3 · Nov 13, 2008

Replies: 3

Graduate Difference between Perfect Diamagnetism and Superconductors

Hells_Kitchen
Nov 11, 2008 · Replies 5 · Nov 12, 2008

Replies: 5

Undergrad Force that holds two wires together when current flowing between them.

jetpeach
Nov 10, 2008 · Replies 2 · Nov 11, 2008

Replies: 2

Graduate Time constant and pulse magnets

trilex987
Nov 7, 2008 · Replies 1 · Nov 11, 2008

Replies: 1

Undergrad Do all objects have inductive properties?

Apteronotus
Oct 28, 2008 · Replies 3 · Nov 11, 2008

Replies: 3

Undergrad Direction of magnetic field and direction of current

bsshelly
Nov 6, 2008 · Replies 16 · Nov 11, 2008

Replies: 16

Undergrad Noob questions about electricity and magnetism

Bigman
Nov 7, 2008 · Replies 7 · Nov 11, 2008

Replies: 7

Undergrad Is generating electricity from subway draft efficient?

Newbie2
Nov 8, 2008 · Replies 5 · Nov 10, 2008

Replies: 5

Undergrad Mechanics of Electromagnetic Waves

LpcArk
Nov 8, 2008 · Replies 7 · Nov 10, 2008

Replies: 7

Undergrad Question on Gauss law & charged disks

mazen_zone
Nov 10, 2008 · Replies 3 · Nov 10, 2008

Replies: 3

Undergrad Thickness of capacitor plates

nangineer
Nov 9, 2008 · Replies 1 · Nov 10, 2008

Replies: 1

Undergrad Question about voltage in terms of dipoles

understand.
Nov 8, 2008 · Replies 2 · Nov 9, 2008

Replies: 2

Undergrad Electrical dark, and spectrum noise.

Fallen Seraph
Nov 7, 2008 · Replies 1 · Nov 8, 2008

Replies: 1

Undergrad What is the Energy Produced by a 55 Gallon Barrel of Air at 500ft Depth?

SimpleQuery
Nov 7, 2008 · Replies 2 · Nov 7, 2008

Replies: 2

Graduate Electrostatics - Charge Density

Herbststurm
Nov 5, 2008 · Replies 3 · Nov 6, 2008

Replies: 3

Graduate Contact force, EM force and the loop

Saw
Nov 5, 2008 · Replies 2 · Nov 6, 2008

Replies: 2

Undergrad Why do magnetic fields always go from south to north or whichever it was?

nemesiswes
Oct 28, 2008 · Replies 6 · Nov 5, 2008

Replies: 6

Undergrad Electromagnetic waves & influence

Denton
Nov 5, 2008 · Replies 1 · Nov 5, 2008

Replies: 1

Undergrad Derivation of maxwells equation

quantumfireball
Nov 5, 2008 · Replies 4 · Nov 5, 2008

Replies: 4

High School Electrical Resistance in Distilled Water: Experiment Ideas

alvintm
Oct 25, 2008 · Replies 5 · Nov 4, 2008

Replies: 5

High School Where are real electric dipoles ?

rogerharris
Nov 3, 2008 · Replies 2 · Nov 4, 2008

Replies: 2

Graduate Biot-Savart Law: Proven or Guessed?

Bobhawke
Nov 4, 2008 · Replies 1 · Nov 4, 2008

Replies: 1

Undergrad The Origin of Electrons in Electric Circuits

DDarcade
Nov 2, 2008 · Replies 20 · Nov 3, 2008

Replies: 20

Graduate Clarification on the Poynting theorem

fisico30
Nov 1, 2008 · Replies 3 · Nov 3, 2008

Replies: 3

Undergrad Can Electric Fields Exist Without Magnetic Fields?

thinktank1985
Oct 28, 2008 · Replies 9 · Nov 3, 2008

Replies: 9

Top