From: John Larkin on 10 Jul 2010 15:30 On Sat, 10 Jul 2010 13:59:51 -0500, Vladimir Vassilevsky <nospam(a)nowhere.com> wrote: > > >John Larkin wrote: > > >> I'm an engineer. I design circuits. Philosophy is useless to me unless >> it allows me to quantify and measure things and predict what the >> numbers will mean. > >Yea, this is what good soldier Schweik used to say: > >"When a car runs out of gas, it stops. Even after been faced with this >obvious fact, they dare to talk about momentum". > > If Schweik has emptied the clip of his machine gun into you, you mostly likely would have died, and his philosophy would have worked better than yours. As an engineer, I use the theories that involve measurable phenomena and subsequently make electronics work, and avoid the ones that don't. John
From: Vladimir Vassilevsky on 10 Jul 2010 15:40 John Larkin wrote: > On Sat, 10 Jul 2010 13:59:51 -0500, Vladimir Vassilevsky > <nospam(a)nowhere.com> wrote: > > >> >>John Larkin wrote: >> >> >> >>>I'm an engineer. I design circuits. Philosophy is useless to me unless >>>it allows me to quantify and measure things and predict what the >>>numbers will mean. >> >>Yea, this is what good soldier Schweik used to say: >> >>"When a car runs out of gas, it stops. Even after been faced with this >>obvious fact, they dare to talk about momentum". >> >> > > > If Schweik has emptied the clip of his machine gun into you, you > mostly likely would have died, and his philosophy would have worked > better than yours. The philosophy can't stop a bullet, however it helps staying away from the places where the bullets are whistling. > As an engineer, I use the theories that involve measurable phenomena > and subsequently make electronics work, and avoid the ones that don't. As an engineer, you should know that machine guns don't use clips. VLV
From: Tim Williams on 10 Jul 2010 15:51 "John Larkin" <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote in message news:o61h36lt8fvhsc00mrc9824ju0jd4hml8s(a)4ax.com... > Now stack them in series. The result is a 1F cap charged to 1 volt. > That has a charge of 1 coulomb. Where did the other coulomb go? The other coulomb was there because it was in parallel. Charge is conserved _in series circuits_, and obeys a law otherwise (Kirchoff). Putting them in parallel, Kirchoff says one plus one makes two. In series, one equals one. So where did you think the charge went? ;) Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms
From: Jim Thompson on 10 Jul 2010 16:00 On Sat, 10 Jul 2010 11:37:20 -0700, John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: [snip] > >I'm an engineer. I design circuits. Philosophy is useless to me unless >it allows me to quantify and measure things and predict what the >numbers will mean. > >Take two caps. C1 is 1 farad, charged to 1 volt. C2 is 2 farads, zero >volts. C1 stores 1 coulomb, C2 has zero. > >Connect a 1 henry inductor across C1 until its voltage is zero. All >the energy has been transferred to the L. Now use the energy in L to >charge C2, and disconnect it when the current decays to zero. All the >energy that used to be in C1 is now in C2. C2 is now at 0.707 volts, >and it holds 1.414 coulombs of charge. > >Even simpler: calculate the coulombs stored in (eg, ampere-seconds >removable from) four identical charged caps in parallel. Now rearrange >them in series to form a 2-terminal capacitor. Recalculate the >coulombs available for extraction. > >Or: start with identical charged caps in parallel. Compute Q of the >parallel combo. Disconnect them and reconnect with opposed polarity. >Recompute Q. > > >That's what "conservation of charge" means in my world: things I can >calculate, measure, and use. Sometimes I can count on conservation of >charge, sometimes I can't. I can always count on conservation of >energy. > >John > Not the same "sloshing" circuit you first presented. No surprise. You never actually answer any question. You should be in politics and sell global warming ;-) BTW, How did you create charge in a closed system? ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | Obama isn't going to raise your taxes...it's Bush' fault: Not re- newing the Bush tax cuts will increase the bottom tier rate by 50%
From: My Name Is Tzu How Do You Do on 10 Jul 2010 16:10
On Sat, 10 Jul 2010 13:59:51 -0500, Vladimir Vassilevsky <nospam(a)nowhere.com> wrote: > > >John Larkin wrote: > > >> I'm an engineer. I design circuits. Philosophy is useless to me unless >> it allows me to quantify and measure things and predict what the >> numbers will mean. > >Yea, this is what good soldier Schweik used to say: > >"When a car runs out of gas, it stops. Even after been faced with this >obvious fact, they dare to talk about momentum". > And they absolutely, positively refuse to pull out a map. GPS allowed them to go back to being lazy all over again. |