>Jerry;
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>While attending engineering college I worked as a senior electronics technician. My interest in electronics and physics began when I was a child. As a technician we were taught to think in terms of “linear equations”. E=IR, etc. To me that was a form of shorthand to solve “practical problems” without getting into too many details.
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>Engineering college taught me that a simple equation like E=IR for an engineer will take three pages of calculations using Integral Calculus. We looked at such equations as complex three-dimensional objects with concern for the instantaneous parameters such as voltage or current that might appear versus time. A technician could calculate if too much current was passing through a transistor but an engineer is concerned with the instantaneous parameters that might be present which can destroy such devices in a fraction of a second. Typical recording instruments used by technicians do not record instantaneous parameters.
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>How you view something is dependent upon your area of concern, expertise and training. Never tell a Brain Surgeon you have a headache. Instead of receiving advice such as “take two aspirin”, the surgeon may elect to operate at that very moment!
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>An understanding of physics is vital to engineering regardless of the discipline and is a subject I truly enjoyed.
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>Tom

Never tell a Brain Surgeon you have a headache. ROF,L.... unless you know that the headache is due to an annularism!
JLK