Science Archives - Page 3 of 9

Faraday’s 1831 Electromagnetic Experiments

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Menu (linked Index) Faraday’s 1831 Electromagnetic Experiments Last Update: September 14, 2025 Introduction Iron Ring Experiment (1831) V-Magnet Experiment (1831) Magnet and Coil Experiment (1831) Introduction We know today that a changing magnetic field can induce an electric current. Michael Faraday, in a series of experiments in 1831, discovered this phenomenon of Electromagnetic Induction. Electromagnetic […]

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Magnetic Force on a Current Carrying Wire

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Menu (linked Index) Magnetic Force on a Current Carrying Wire Last Update: September 3, 2025 Introduction The Lorentz Force Equation Example: Magnetic Force on a Current Carrying Wire Summary Introduction A wire carrying current creates a magnetic field. This magnetic field exerts a force on a magnet carrying compass. Newton’s Third Law says that “for

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Lorentz Force Law

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Menu (linked Index) Lorentz Force Law Last Update: September 1, 2025 Introduction Vector Cross Product Rules and Conventions Force on a Charge in an Electric Field Force on a Moving Charge in a Magnetic Field Lorentz Force Law Introduction The Lorentz force is the total force exerted on a charged particle that’s moving through a

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The Best On-Line Teachers

Biot-Savart Law and Ampère’s Law

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Menu (linked Index) Biot Savart Law and Ampère’s Law Last Update: August 30, 2025 Introduction B Based on Moving Point Charge Current I in Terms of Drift Velocity Biot-Savart Law Derivation Biot-Savart Law on a Long Straight Wire B on a Closed Circular Loop Around a Wire with Current B on a Closed Loop Around

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Gauss’s Law for Electric Fields

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Menu (linked Index) Gauss’s Law for Electric Fields Last Update: August 22, 2025 Introduction Water Flow Analogy for Electric Flux General Form of Uniform Electric Flux through A Flat Surface Flux of a Non-Uniform Electric Field through an Irregular Surface Area Vectors Electric Flux Definition Using the Area Vector Gauss’s Law for Electric Fields Appendix

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From Maxwell’s Equations to The Wave Equation

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Menu (linked Index) From Maxwell’s Equations to The Wave Equation Last Update: August 20, 2025 Introduction Gradient , Diversion, and Curl Maxwell’s Equations The Wave Equation Deriving the B and W Wave Equations Appendix 1 Appendix 2 Appendix 3 Introduction James Clerk Maxwell (1831–1879) was a Scottish physicist known for his groundbreaking work in electromagnetism.

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Field Operators: Grad, Div, and Curl

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Menu (linked Index) Field Operators: Grad, Div, and Curl Last Update: August 18, 2025 Introduction Definitions Graphing a Vector Field Differentiation Basics The Gradient Operator Divergence Operator The Laplacian Direction of Axis of Rotation The Curl Operator Excellent Educational Video References Appendix 1: Uses of the Derivative Introduction This post is about three fundamental operators

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Vector Math

The Derivative

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Menu (linked Index) The Derivative Last Update: October 18, 2025 Introduction The Derivative Derivative Rules Derivatives of Some Useful Functions Ordinary Derivative Velocity and Acceleration As Derivatives Partial Derivative Introduction This article is a high level introduction to the mathematical tool called differentiation. At its core, differentiation is the process of finding the instantaneous rate

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