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Politics : The Environmentalist Thread -- Ignore unavailable to you. Want to Upgrade?

To: Thomas A Watson who wrote (19087)	12/27/2007 11:10:42 PM
From: maceng2	Respond to of 36921

Basically Circuit analysis is not a subset of electromagnetism. I suppose if you are reviewing DC electrical circuits, and older type of electronics, Kirchoff's and ohms law will do. Modern circuits based on IC's need consideration of AC circuit analysis at higher frequencies. Transmission line theory becomes an important consideration at high frequencies. en.wikipedia.org That opens the door to all sorts of electromagetic theory considerations. Hard to keep Maxwell out of the equation at that point. Mathematical analysis of the behaviour of electrical transmission lines grew out of the work of James Clerk Maxwell, Lord Kelvin and Oliver Heaviside. In 1855 Lord Kelvin formulated a diffusion model of the current in a submarine cable. The model correctly predicted the poor performance of the 1858 trans-Atlantic submarine telegraph cable. In 1885 Heaviside published the first papers that described his analysis of propagation in cables and the modern form of the telegrapher's equations. [1]

To: Thomas A Watson who wrote (19087)	12/28/2007 12:17:39 AM
From: neolib	Read Replies (2) \| Respond to of 36921

You are confusing methods of analysis with the underlying physics. Heat Transfer as a physical science is simply Thermodynamics with the work term set to zero. Heat Transfer as Analysis is a bag of mathematical methods that solve useful problems of a subset of Thermodynamics. Same confusion your fellow denier has. Circuit Analysis is a bag of mathematical methods for solving useful circuit problems. But 100% of electronics as physics is Electromagnetism. I should note that for some problems of both Thermodynamics and Electromagnetism you need the QM equations, not the Classical ones. Little details...