Posted by TomH in PA on January 18, 2016 at 16:23:39 from (67.234.43.122):
In Reply to: OT but critical! posted by cool hand on January 18, 2016 at 16:01:18:
Because the Sun isn't at its highest point in the sky when your clock says 12:00 (noon local time). The difference is the error of your clock compared to "Local Solar Noon".
Local Solar Noon is when the time when the Sun is highest, the time on your clock when that occurs varies by season because the Earth's poles are tilted, the orbit around the Sun isn't perfectly circular, and you need to consider both the Earth's rotation on its axis and its orbit around the Sun.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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