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Graduate Optical Physics and Quantum Electronics

Dec 30, 2005 · Replies 1 · Feb 28, 2007

Replies: 1

Views: 7K

Undergrad How Is Work Calculated for Permanent Magnets on Iron Plates?

Feb 28, 2007 · Replies 7 · Feb 28, 2007

Replies: 7

Views: 7K

High School Magnetism: 12.5 kiloGauss = lbs pull

Feb 26, 2007 · Replies 2 · Feb 28, 2007

Replies: 2

Views: 17K

Graduate Is the center of a charged spherical shell a point of neutral equilibrium?

Feb 26, 2007 · Replies 8 · Feb 28, 2007

Replies: 8

Views: 3K

Undergrad The Physics of Electric Flux Density Vector (D)

Feb 20, 2007 · Replies 18 · Feb 23, 2007

Replies: 18

Views: 4K

Undergrad Can Metals Ever Have an Electric Field Inside?

Feb 21, 2007 · Replies 2 · Feb 22, 2007

Replies: 2

Views: 10K

Undergrad How Do Eddy Currents Form in Transformers?

Feb 20, 2007 · Replies 1 · Feb 21, 2007

Replies: 1

Views: 4K

Undergrad Shouldn't the electromagnetic fields in waves be 90 degrees out of phase?

Feb 19, 2007 · Replies 7 · Feb 20, 2007

Replies: 7

Views: 9K

Undergrad Is a 1-2T electromagnet smaller than 2 cm by 1 cm possible?

Feb 19, 2007 · Replies 3 · Feb 20, 2007

Replies: 3

Views: 4K

Undergrad Fundamental problem in electrostatics

Feb 19, 2007 · Replies 4 · Feb 19, 2007

Replies: 4

Views: 4K

Graduate Maxwell-Boltzmann, Fermi-Dirac and Bose-Einstein.

Feb 18, 2007 · Replies 1 · Feb 19, 2007

Replies: 1

Views: 8K

Undergrad Divergence- Useful Concept? Why?

Feb 15, 2007 · Replies 7 · Feb 17, 2007

Replies: 7

Views: 4K

Undergrad Can an EMF Induce a Magnetic Field in a Moving Metal Rod?

Feb 16, 2007 · Replies 4 · Feb 16, 2007

Replies: 4

Views: 5K

Undergrad Calculate earths magnetic field?

Feb 14, 2007 · Replies 1 · Feb 14, 2007

Replies: 1

Views: 6K

High School Software for constructing simple circuit diagrams

Feb 13, 2007 · Replies 6 · Feb 14, 2007

Replies: 6

Views: 9K

Undergrad How Do You Calculate Hall Voltage Across a Ribbon?

Feb 13, 2007 · Replies 1 · Feb 13, 2007

Replies: 1

Views: 3K

High School Electric Physics: Electric Fields, Flux & Potentials

Feb 13, 2007 · Replies 2 · Feb 13, 2007

Replies: 2

Views: 2K

Undergrad Why does my phone get a signal in a metal box?

Sep 10, 2006 · Replies 18 · Feb 13, 2007

Replies: 18

Views: 17K

Graduate Increase in energy in an electric field

Feb 11, 2007 · Replies 9 · Feb 13, 2007

Replies: 9

Views: 4K

High School X Watts to run = x Watts of heat?

Feb 7, 2007 · Replies 27 · Feb 12, 2007

Replies: 27

Views: 11K

High School What does resonance frequency mean?

Feb 10, 2007 · Replies 13 · Feb 12, 2007

Replies: 13

Views: 35K

Graduate Self interaction, conserving energy

Feb 10, 2007 · Replies 2 · Feb 11, 2007

Replies: 2

Views: 5K

Undergrad Negative and Positive Charges: A Deeper Look

Feb 10, 2007 · Replies 7 · Feb 11, 2007

Replies: 7

Views: 3K

Undergrad Electric field of a Styrofoam ball

Feb 9, 2007 · Replies 2 · Feb 9, 2007

Replies: 2

Views: 2K

Undergrad Charge Equality Between Different Size Pith Balls

Feb 7, 2007 · Replies 3 · Feb 8, 2007

Replies: 3

Views: 8K

Graduate A single moving charge constituite a current

Feb 8, 2007 · Replies 3 · Feb 8, 2007

Replies: 3

Views: 6K

Graduate Creating a Magnetic Bubble: Proving or Disproving

Jan 9, 2007 · Replies 3 · Feb 8, 2007

Replies: 3

Views: 3K

Graduate Momentum Conservation for Two Moving Charges

Dec 28, 2006 · Replies 9 · Feb 7, 2007

Replies: 9

Views: 4K

Undergrad Why is the electric field constant in a wire?

Feb 4, 2007 · Replies 18 · Feb 7, 2007

Replies: 18

Views: 17K

Undergrad What is the relationship between Doppler Effect and frequency?

Feb 6, 2007 · Replies 3 · Feb 6, 2007

Replies: 3

Views: 6K

High School Magnetic Fields: Moving Electrons

Feb 2, 2007 · Replies 10 · Feb 6, 2007

Replies: 10

Views: 5K

Graduate Can protons and neutrons be converted into electrons and vice versa?

Feb 4, 2007 · Replies 2 · Feb 6, 2007

Replies: 2

Views: 12K

Undergrad Is My Equation for Modelling Air Resistance in a Computer Game Accurate?

Feb 2, 2007 · Replies 12 · Feb 4, 2007

Replies: 12

Views: 6K

Undergrad Name Electromagnetic Technologies

Feb 3, 2007 · Replies 5 · Feb 3, 2007

Replies: 5

Views: 6K

Undergrad Energy - Gravity, Electromagntic , from where ?

Feb 2, 2007 · Replies 4 · Feb 3, 2007

Replies: 4

Views: 2K

Undergrad Permanent magnet B field equation

Jan 27, 2007 · Replies 6 · Jan 29, 2007

Replies: 6

Views: 17K

Undergrad In a railgun the lorentz force causes an object to be propelled

Aug 13, 2006 · Replies 6 · Jan 29, 2007

Replies: 6

Views: 3K

Undergrad Electric Field and two parallel plate capacitors

Jan 27, 2007 · Replies 6 · Jan 28, 2007

Replies: 6

Views: 5K

Undergrad Questions about electromagnnetic wave: amplitude

Jan 27, 2007 · Replies 4 · Jan 27, 2007

Replies: 4

Views: 3K

Graduate Electromagnetic force in electric motor

Jan 21, 2007 · Replies 7 · Jan 27, 2007

Replies: 7

Views: 6K

Graduate Will a single electron in vacuum vibrate?

Jan 24, 2007 · Replies 11 · Jan 27, 2007

Replies: 11

Views: 6K

High School Charge of a Capacitor - Explaining Electric Field Strength

Jan 25, 2007 · Replies 15 · Jan 27, 2007

Replies: 15

Views: 8K

High School Magnetic Force: Can vs 2L Bottle

Jan 26, 2007 · Replies 1 · Jan 26, 2007

Replies: 1

Views: 3K

High School Magnetic domains what are they?

Jan 26, 2007 · Replies 1 · Jan 26, 2007

Replies: 1

Views: 3K

High School Magnetic Field: Find the Right Magnet for a Foot Away

Jan 25, 2007 · Replies 7 · Jan 25, 2007

Replies: 7

Views: 2K

Graduate Charged black hole in electromagnetic field

Jan 12, 2007 · Replies 4 · Jan 25, 2007

Replies: 4

Views: 3K

Graduate Invariant quantities in the EM field

Jan 23, 2007 · Replies 2 · Jan 24, 2007

Replies: 2

Views: 3K

Undergrad Charge and Electric Field Intensity

Jan 23, 2007 · Replies 2 · Jan 24, 2007

Replies: 2

Views: 3K

Graduate Mass,Spring, Damper vs Capacitor, Indcutor, Resistor vs ? analogy

Jan 18, 2007 · Replies 4 · Jan 24, 2007

Replies: 4

Views: 11K

Undergrad Exploring Thomson's Charge to Mass Ratio: Implications for Cathode Rays

Jan 23, 2007 · Replies 2 · Jan 24, 2007

Replies: 2

Views: 16K

High School Electric Charges: Opposite Attract, Same Repel

Jan 22, 2007 · Replies 7 · Jan 22, 2007

Replies: 7

Views: 3K

High School Capacitor Q: Charging vs Discharging

Jan 21, 2007 · Replies 2 · Jan 21, 2007

Replies: 2

Views: 8K

Undergrad Two ferromagnetic balls, rolling down a ruler

Jan 16, 2007 · Replies 7 · Jan 20, 2007

Replies: 7

Views: 4K

Undergrad Mumetal Permeability: Right or Wrong?

Jan 16, 2007 · Replies 16 · Jan 20, 2007

Replies: 16

Views: 11K

Undergrad What Causes Electrons to Jump into Holes?

Jan 16, 2007 · Replies 2 · Jan 19, 2007

Replies: 2

Views: 5K

Undergrad Ways to generate clean electricity?

Jan 18, 2007 · Replies 6 · Jan 18, 2007

Replies: 6

Views: 8K

High School Understanding Magnetic Attraction: Non-Magnetic Metal and Poles Explained

Jan 18, 2007 · Replies 3 · Jan 18, 2007

Replies: 3

Views: 2K

Graduate Newbie question please about electrons and light

Jan 17, 2007 · Replies 2 · Jan 18, 2007

Replies: 2

Views: 3K

High School Rotate Bar Magnet: Magnetic Field Effects

Jan 16, 2007 · Replies 1 · Jan 16, 2007

Replies: 1

Views: 5K

Undergrad If water is exposed to high voltage, it will ionize.

Jan 13, 2007 · Replies 9 · Jan 16, 2007

Replies: 9

Views: 4K

Undergrad Harness AC Current for Breadboard w/ LabPro

Jan 14, 2007 · Replies 5 · Jan 15, 2007

Replies: 5

Views: 2K

Undergrad Blocking Magnetic Energy: Materials and Solutions

Jan 13, 2007 · Replies 3 · Jan 13, 2007

Replies: 3

Views: 5K

High School Capacitors and potential difference

Jan 12, 2007 · Replies 3 · Jan 13, 2007

Replies: 3

Views: 2K

Undergrad Why the Earth is electro-neutral?

Jan 11, 2007 · Replies 2 · Jan 12, 2007

Replies: 2

Views: 4K

High School Magnetic forces and many poles

Jan 10, 2007 · Replies 4 · Jan 11, 2007

Replies: 4

Views: 2K

High School The Development of Coulomb's Law

Jan 9, 2007 · Replies 4 · Jan 11, 2007

Replies: 4

Views: 2K

Graduate Lagrangian density for the EM field in a dielectric medium

Jan 8, 2007 · Replies 5 · Jan 10, 2007

Replies: 5

Views: 5K

Graduate Soap bubble measures electric field

Jan 10, 2007 · Replies 4 · Jan 10, 2007

Replies: 4

Views: 3K

Undergrad Magnetic Monopoles: Moving Charges & Existence Theory

Jan 9, 2007 · Replies 1 · Jan 9, 2007

Replies: 1

Views: 3K

Graduate Comparing Coumlomb's Force Law & QED for Electromagnetic Forces

Jan 3, 2007 · Replies 2 · Jan 9, 2007

Replies: 2

Views: 4K

Graduate Maxwell's Eq in Complex Form: Why Is It Not Popular?

Dec 30, 2006 · Replies 15 · Jan 8, 2007

Replies: 15

Views: 3K

Undergrad Tube Magnet's Magnetic Field: Effects and Questions

Jan 5, 2007 · Replies 3 · Jan 6, 2007

Replies: 3

Views: 4K

Undergrad Watts - How Does Voltage Affect Batteries and Static Electricity?

Jan 5, 2007 · Replies 13 · Jan 6, 2007

Replies: 13

Views: 4K

High School The Mystery of Magnetic Blocks - Operation & Use

Dec 30, 2006 · Replies 9 · Jan 4, 2007

Replies: 9

Views: 5K

High School How Does Friction Generate or Transfer Electrical Charge?

Jan 3, 2007 · Replies 4 · Jan 3, 2007

Replies: 4

Views: 9K

Undergrad How does an em wave propagate at the speed of light?

Jan 1, 2007 · Replies 6 · Jan 2, 2007

Replies: 6

Views: 3K

Undergrad Minimum Voltage and Current for Electric Arc at One Inch Distance

Jan 2, 2007 · Replies 1 · Jan 2, 2007

Replies: 1

Views: 10K

High School Does a Refrigerator Magnet Lose Its Strength Over Time?

Dec 22, 2006 · Replies 11 · Jan 1, 2007

Replies: 11

Views: 48K

Undergrad Dumb question about electronic structure

Dec 30, 2006 · Replies 3 · Dec 31, 2006

Replies: 3

Views: 3K

Undergrad What are the applications of Quadrupole Neodymium magnets?

Dec 18, 2006 · Replies 3 · Dec 27, 2006

Replies: 3

Views: 5K

Undergrad Is electricity faster than light?

Dec 25, 2006 · Replies 23 · Dec 26, 2006

Replies: 23

Views: 13K

Graduate What is the force exerted on an electron if it absorbs a photon with frequency v

Dec 22, 2006 · Replies 13 · Dec 25, 2006

Replies: 13

Views: 5K

Graduate Question about maxwell's equations

Dec 20, 2006 · Replies 18 · Dec 25, 2006

Replies: 18

Views: 6K

Graduate Negative Voltage vs. Negative Pressure

Dec 22, 2006 · Replies 2 · Dec 22, 2006

Replies: 2

Views: 6K

Undergrad Another light thread more electromagnetic

Dec 21, 2006 · Replies 4 · Dec 21, 2006

Replies: 4

Views: 2K

Graduate Intuitive explanation why frequency is fixed

Dec 19, 2006 · Replies 8 · Dec 20, 2006

Replies: 8

Views: 6K

Undergrad Magnet Force: Calculate Force from 1T Magnet & Iron

Dec 19, 2006 · Replies 5 · Dec 19, 2006

Replies: 5

Views: 8K

Undergrad Mechanical force and the electrical force generated by a magnet

Dec 18, 2006 · Replies 4 · Dec 18, 2006

Replies: 4

Views: 3K

High School Some Questions pestering me , Help

Dec 17, 2006 · Replies 2 · Dec 17, 2006

Replies: 2

Views: 2K

Undergrad Why do electric devices get burnt during thunderstorms

Dec 13, 2006 · Replies 1 · Dec 13, 2006

Replies: 1

Views: 3K

Undergrad Electricity Doubt: Is Electric Field Inside Conductor?

Dec 13, 2006 · Replies 1 · Dec 13, 2006

Replies: 1

Views: 3K

High School Can you measure watts through heat?

Dec 12, 2006 · Replies 14 · Dec 13, 2006

Replies: 14

Views: 12K

Undergrad Electron Gun Grounding: Best Practices for Photoemission Experiments

Dec 7, 2006 · Replies 7 · Dec 11, 2006

Replies: 7

Views: 5K

High School Can Two 15 Ohm 1/2 Watt Resistors Be Used for a 1.8 Watt Requirement?

Dec 8, 2006 · Replies 2 · Dec 9, 2006

Replies: 2

Views: 2K

Undergrad Electric Discharge Patterns: Coincidence or Controlled Pathways?

Dec 6, 2006 · Replies 9 · Dec 9, 2006

Replies: 9

Views: 3K

High School Understanding Magnetic Field Hand Rules

Dec 7, 2006 · Replies 3 · Dec 8, 2006

Replies: 3

Views: 5K

High School Can gases conduct electricity?

Dec 5, 2006 · Replies 14 · Dec 7, 2006

Replies: 14

Views: 24K

High School How to identify a magnet from a metal bar

Dec 5, 2006 · Replies 3 · Dec 5, 2006

Replies: 3

Views: 3K

Undergrad Changing state from solid to liquid by application of electric current

Nov 26, 2006 · Replies 16 · Dec 4, 2006

Replies: 16

Views: 13K

High School Radio Waves: Shielding & Blocking Long Wavelengths

Nov 17, 2006 · Replies 9 · Dec 3, 2006

Replies: 9

Views: 2K

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