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 Post subject: Re: check voltages AND currents
PostPosted: Apr Mon 15, 2019 2:17 pm 
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Which is more fun---the original topic or the digression?

Anything with mass can have either potential or kinetic energy. It can also be converted to energy--eg heat, light, or some other flavor of EM energy.
Going back and forth between classical physics and relativity can cause brain damage.........better to just repair or align a classic radio......;)

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 Post subject: Re: check voltages AND currents
PostPosted: Apr Mon 15, 2019 4:28 pm 
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Quote:
Which is more fun---the original topic or the digression?

Just for fun.. I remember somewhere a theory that the flow of electricity is from positive to negative, Sooo, the crt burn isn't a burn, it's where the phosphor has been sucked off the glass. :mrgreen:
Maybe that was hole theory, kind full of holes ?

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Last edited by pauls.ironhorse on Apr Mon 15, 2019 10:46 pm, edited 1 time in total.

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 Post subject: Re: check voltages AND currents
PostPosted: Apr Mon 15, 2019 6:38 pm 
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The direction of current flow is an arbitrary convention. What is nice about this is that you can create an argument for just about anything---especially, if you use different conventions for different parts of the system.
There are endless possibilities for proving pseudo-science theories.....:)

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 Post subject: Re: check voltages AND currents
PostPosted: Apr Mon 15, 2019 7:10 pm 
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Is the current subject of this thread the current one?
I mean the current one, is it the current one? :lol:

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 Post subject: Re: check voltages AND currents
PostPosted: Apr Mon 15, 2019 8:11 pm 
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enelson14 wrote:
fifties wrote:
Aren't electrons considered energy? If so, they can't have mass.


E=mc2 would tend to disagree with you.

No wonder I got a C- in high school physics; shows how much I know. I would have thought that the theory of relativity, E=mc2, meant that energy was not mass, since it's on the other side of the = sign.

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 Post subject: Re: check voltages AND currents
PostPosted: Apr Mon 15, 2019 8:41 pm 
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Right, E is not an electron. Electrons get agitated and toss E along the wire, like a crowd in a mosh pit. Their mass is needed for the force of the toss, I suppose.

Ask Albert. I just know that when you clip a wire you don't get electrons spilling out onto the floor. :lol:

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 Post subject: Re: check voltages AND currents
PostPosted: Apr Mon 15, 2019 8:53 pm 
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westcoastjohn wrote:

Ask Albert. I just know that when you clip a wire you don't get electrons spilling out onto the floor. :lol:

Well now everybody knows that's what a grid leak drip pan is for...


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 Post subject: Re: check voltages AND currents
PostPosted: Apr Mon 15, 2019 9:10 pm 
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And the electrons flowing in one direction and the current flowing in the opposite direction create resistance.

Dave


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 Post subject: Re: check voltages AND currents
PostPosted: Apr Mon 15, 2019 9:17 pm 
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Electrons are as slow as a tax refund, whereas the charge is only
limited by number of dogs snapping at your current taxman's ankles. :D

Amps /1 mm^2 about 15 minutes to travel a meter. If i remember right.. :(

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 Post subject: Re: check voltages AND currents
PostPosted: Apr Mon 15, 2019 10:35 pm 
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E=mC2 is no different to V=IR. And basically Energy should be able to be converted to mass. I have always been of the opinion that a black hole can only swallow so much before it reaches a critical mass & it goes positive & explodes.

Marc


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 Post subject: Re: check voltages AND currents
PostPosted: Apr Mon 15, 2019 10:51 pm 
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Marcc wrote:
E=mC2 is no different to V=IR. And basically Energy should be able to be converted to mass. I have always been of the opinion that a black hole can only swallow so much before it reaches a critical mass & it goes positive & explodes.

Marc

Mass can convert to energy, but does it work the other way around? And again, how could pure energy have mass?

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 Post subject: Re: check voltages AND currents
PostPosted: Apr Mon 15, 2019 11:33 pm 
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I've created a monster......

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 Post subject: Re: check voltages AND currents
PostPosted: Apr Mon 15, 2019 11:54 pm 
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Indeed you have... :wink:

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 Post subject: Re: check voltages AND currents
PostPosted: Apr Tue 16, 2019 12:07 am 
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Agreed: Its a monster , hopefully it will devour itself.

Read between the lines of the formula: That's its genius. It is actually saying that energy can be converted to mass.

Marc


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 Post subject: Re: check voltages AND currents
PostPosted: Apr Wed 17, 2019 12:29 am 
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Marcc wrote:
Agreed: Its a monster , hopefully it will devour itself.

Read between the lines of the formula: That's its genius. It is actually saying that energy can be converted to mass.

Marc


But can this energy be created without gravity ? Didn't
Einstein take this problem to the grave ?

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 Post subject: Re: check voltages AND currents
PostPosted: Apr Wed 17, 2019 12:36 am 
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radiotechnician wrote:

But can this energy be created without gravity ?
gravity is a side effect of mass.....if I'm not mistaken the relationship between mass and energy stands (or falls) on its own.

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