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Old 12-25-2011, 03:06 PM   #1
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Default 6.28 x 10^18

Just seeing who is on their toes.

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Old 12-25-2011, 03:09 PM   #2
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Number of electrons in a coulomb.

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Old 12-25-2011, 03:10 PM   #3
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Just seeing who is on their toes.
I know what it is, I just have no idea why it's taught in school. Do plumbers need to know how many water molecules in a liter of water? I can't see any value in knowing how many electrons in a coulombe.
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Old 12-25-2011, 03:12 PM   #4
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just seeing who is on their toes.

6,800,000,000,000,000,000.00
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Old 12-25-2011, 03:19 PM   #5
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I know what it is, I just have no idea why it's taught in school. Do plumbers need to know how many water molecules in a liter of water? I can't see any value in knowing how many electrons in a coulombe.

So, you are one who believes that dumbing down the trades in desirable?



BTW, the amount of water molecules in a liter of water is not a set figure

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Old 12-25-2011, 03:20 PM   #6
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Google makes it too easy.
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Old 12-25-2011, 03:25 PM   #7
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So, you are one who believes that dumbing down the trades in desirable?
If you knew anything about me, or what I do, you'd find I think exactly the opposite.

That said, can you let me know what, if any value there is at all to knowing that? I'd love to know even one instance where knowing that makes a person a better electrician.
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Old 12-25-2011, 03:27 PM   #8
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Google makes it too easy.


8V71?

Non-turbo. 4 valve, N75 injectors 318HP in automotive trim
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Old 12-25-2011, 03:31 PM   #9
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I was just reading in an old electrical book about how huge the electric force really is. If you had two spheres of pure electrons, 1 gram each, placed 1 cm apart, they would repel each other with a force of 320 million million million million tons
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Old 12-25-2011, 03:34 PM   #10
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I know what it is, I just have no idea why it's taught in school. Do plumbers need to know how many water molecules in a liter of water? I can't see any value in knowing how many electrons in a coulombe.
Coulomb......

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Old 12-25-2011, 03:36 PM   #11
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If you knew anything about me, or what I do, you'd find I think exactly the opposite.

That said, can you let me know what, if any value there is at all to knowing that? I'd love to know even one instance where knowing that makes a person a better electrician.

I think we have a few guys here who could work a coulomb into an equation.

Probably something like current flow from a discharging cap or some such chit
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Old 12-25-2011, 03:44 PM   #12
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Coulomb......
I know what it is, but I maintain it's pointless info.

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I think we have a few guys here who could work a coulomb into an equation.

Probably something like current flow from a discharging cap or some such chit
I can use it in a formula and fully understand the math behind it, but it's irrelevant, IMO.

The quantity of charge contained by a capacitor is measured in coulombs, but in the real world we work with the relevant "capacitor numbers", like Farads, voltage, current and VARS/KVARs.
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Old 12-25-2011, 03:54 PM   #13
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8V71?

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Don't forget the scream.
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Old 12-25-2011, 04:54 PM   #14
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I was just reading in an old electrical book about how huge the electric force really is. If you had two spheres of pure electrons, 1 gram each, placed 1 cm apart, they would repel each other with a force of 320 million million million million tons
Ouch....
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Old 12-25-2011, 05:18 PM   #15
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So, you are one who believes that dumbing down the trades in desirable?
That is not even close to what he said.
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Old 12-25-2011, 05:24 PM   #16
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Don't forget the scream.
Check out the 6-110 powered gen-set. 110 series was a rare bird. Mostly marine propultion, crawler cranes,,,,,,,,,,,,,

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Sounds like it might be a 1200 RPM primary power set
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Old 12-25-2011, 05:49 PM   #17
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Check out the 6-110 powered gen-set. 110 series was a rare bird. Mostly marine propultion, crawler cranes,,,,,,,,,,,,,

Sounds like it might be a 1200 RPM primary power set
That's cool how rotating objects get in and out of sync with the camera's timing. You can see the spot they missed on the harmonic balancer while repainting.
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Old 12-25-2011, 06:04 PM   #18
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That's cool how rotating objects get in and out of sync with the camera's timing. You can see the spot they missed on the harmonic balancer while repainting.

Those were great motors in a whole lot of ways. I use to subcontract a lot of work from McHugh Brothers. They were a big time player in the crane business in Philly back in the day. They also owned a couple of railroads. Big time 2 stroke detroit freaks. They speced everything out with them. You could build all kinds of different configurations with the same pile of parts. They had them in everything from small portable generators, trucks, cranes, a Cline prime mover that they built out of a off road dump, and even 44 ton switchers.

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Old 12-25-2011, 06:10 PM   #19
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I know what it is, but I maintain it's pointless info.



I can use it in a formula and fully understand the math behind it, but it's irrelevant, IMO.

The quantity of charge contained by a capacitor is measured in coulombs, but in the real world we work with the relevant "capacitor numbers", like Farads, voltage, current and VARS/KVARs.

Yeah but a guy with true interest is going to want to know what all those standard units mean.
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Old 12-25-2011, 06:21 PM   #20
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Don't forget the scream.
Oh BTW this is McHugh's Cline pulling a Trabosa Trailer. Every one of those wheels turned hydraulically. And you could plumb them in groups to do pretty much anything you wanted. It was powered by an air cooled VW "Beetle" engine.
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