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#1
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On Sep 29, 10:02*am, Roger Long wrote:
On Sep 29, 7:32*am, Goofball_star_dot_etal wrote: There are numerous examples of equating inconsistant units. Here is one example of gobeldygook: The reaction to these presentations on the web is always the same. The professionals, especially teachers, like them and they gather all sorts of nit picks from others. *That particular bit of gobeldygook came from an article published in a leading aviation Emagazine and, last I heard, was being used as an introduction to the subject in at least one college course. These are not intended to be physics texts. *There are plenty of those. *The intent is to provide a plain language viceral understanding of the basic principles. *Units and terms most recognizable to the reader with little prior knowledge are preferable in a quick and light treatment. Why this kind of thing worthwhile? *I've had a whole career (I'm hardly "budding") to watch people with naval architectural degrees and complete understanding of the math and unit consistency *come to really bone headed conclusions that have greatly hampered the commercial and educational sail industries because they didn't start with a gut understanding of the physics and let numbers and anal attention to unit consistency lead them to absurd conclusions. *If they had first understood the subject on this kind of level, they might have made better use of the mathematical tools. *Most college courses and texts start right off with the math. These articles are just starting points and not intended to be much above the level of Sunday newpaper supplement stuff. *Professionals tend to see them for what they are and their limited value and net posters as opportunities to show how smart they are. *Happy to have provided the opportunity. -- Roger Long Roger: Generally pretty good if you take out the part about requiring energy to float. I'll re-read it sometime today. Frogwatch (former college Physics teacher who has forgotten more'n he ever learned) |
#2
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Frogwatch wrote:
These articles are just starting points and not intended to be much above the level of Sunday newpaper supplement stuff. Professionals tend to see them for what they are and their limited value and net posters as opportunities to show how smart they are. Happy to have provided the opportunity. -- Roger Long Roger: Generally pretty good if you take out the part about requiring energy to float. I'll re-read it sometime today. Frogwatch (former college Physics teacher who has forgotten more'n he ever learned) Can we at least agree that the floating boat actually does raise the water level? |
#3
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![]() "cavelamb" wrote in message m... Can we at least agree that the floating boat actually does raise the water level? Absolutely. To the same extent that lighting a match increases global warming. ;-) -- KLC Lewis WISCONSIN Where It's So Cool Outside, Nobody Stays Indoors Napping www.KLCLewisStudios.com |
#4
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KLC Lewis wrote:
"cavelamb" wrote in message m... Can we at least agree that the floating boat actually does raise the water level? Absolutely. To the same extent that lighting a match increases global warming. ;-) Actually, KC, it took considerably more energy to MAKE that match than it gives off. Entropy is still increasing. |
#5
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On Sep 29, 10:13*am, Frogwatch wrote:
Generally pretty good if you take out the part about requiring energy to float. *I'll re-read it sometime today. That's not really what it was meant to convey but it's a work in progress. I'll keep this in mind when I get around to the next round of revisions. -- Roger Long |
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