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 Re: Old age shows its mark... Charles Programmer1-Feb-19 5:15 Charles Programmer 1-Feb-19 5:15
 Re: Old age shows its mark... PIEBALDconsult31-Jan-19 17:44 PIEBALDconsult 31-Jan-19 17:44
 Re: Old age shows its mark... V.31-Jan-19 19:59 V. 31-Jan-19 19:59
 Re: Old age shows its mark... Marco Bertschi31-Jan-19 21:44 Marco Bertschi 31-Jan-19 21:44
 Re: Old age shows its mark... Retired201731-Jan-19 23:22 Retired2017 31-Jan-19 23:22
 Re: Old age shows its mark... Member 79891221-Feb-19 0:58 Member 7989122 1-Feb-19 0:58
 Re: Old age shows its mark... MKJCP1-Feb-19 1:53 MKJCP 1-Feb-19 1:53
 Re: Old age shows its mark... Member 79891221-Feb-19 2:32 Member 7989122 1-Feb-19 2:32
 And in the grey zone between math and physics: I spent my high school senior year in the US as an exchange student. The physics teacher in my Norwegian high school had stressed that one good reason for using 'v' as a symbol for speed and 'u' as a symbol for voltage is to make it simpler to do complex calcuations as "pure math" without being confused by any physical interpretation of the (partial) expressions. My US physics teacher stressed exact the opposite view: We use 'v' for velocity to make you concious of the meaning of this value within a complex formula! ... He was surprised that we did not use the initial letters of the Norwegian words for those concepts. How can you know what you are calculating, if you ignore the semantics? I do understand his reasoning, but it goes only so far. At some point, you must detach the calculations from the physical interpretation of each value. To take one example: In electronics, I learned to calculate filters, handling both the values and the units, and saw it coming out as a value in seconds (or more commonly: microseconds) describing the filter. I know how I got there, but it never got under my skin how the value ended up as a time. I cannot associate a filter with a time span, the way I can see what a car's speed or mass represents. I can only handle it by treating it as pure math, and learn that the resulting value comes out as microseconds, without grokking it.
 Re: Old age shows its mark... MKJCP1-Feb-19 2:42 MKJCP 1-Feb-19 2:42
 Re: Old age shows its mark... Member 79891221-Feb-19 3:32 Member 7989122 1-Feb-19 3:32
 Re: Old age shows its mark... Bruce Patin1-Feb-19 4:49 Bruce Patin 1-Feb-19 4:49
 Re: Old age shows its mark... Overtkill1-Feb-19 5:06 Overtkill 1-Feb-19 5:06
 Re: Old age shows its mark... Dr.Walt Fair, PE1-Feb-19 7:03 Dr.Walt Fair, PE 1-Feb-19 7:03
 Re: Old age shows its mark... Dr.Walt Fair, PE1-Feb-19 8:30 Dr.Walt Fair, PE 1-Feb-19 8:30
 Re: Old age shows its mark... jschell2-Feb-19 7:12 jschell 2-Feb-19 7:12
 At the risk of showing my ignorance... dandy7231-Jan-19 10:11 dandy72 31-Jan-19 10:11
 Re: At the risk of showing my ignorance... abmv31-Jan-19 16:43 abmv 31-Jan-19 16:43
 Re: At the risk of showing my ignorance... dandy721-Feb-19 7:10 dandy72 1-Feb-19 7:10
 Re: At the risk of showing my ignorance... abmv1-Feb-19 18:12 abmv 1-Feb-19 18:12
 Re: At the risk of showing my ignorance... dandy722-Feb-19 2:11 dandy72 2-Feb-19 2:11
 Re: At the risk of showing my ignorance... Fueled By Caffeine31-Jan-19 22:16 Fueled By Caffeine 31-Jan-19 22:16
 Re: At the risk of showing my ignorance... dandy721-Feb-19 7:11 dandy72 1-Feb-19 7:11
 Re: At the risk of showing my ignorance... Dr.Walt Fair, PE1-Feb-19 7:05 Dr.Walt Fair, PE 1-Feb-19 7:05
 Re: At the risk of showing my ignorance... dandy721-Feb-19 7:13 dandy72 1-Feb-19 7:13
 Re: At the risk of showing my ignorance... Dr.Walt Fair, PE1-Feb-19 8:33 Dr.Walt Fair, PE 1-Feb-19 8:33
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