| Topic: |
Science > Physics |
| User: |
"flekso" |
| Date: |
03 Aug 2003 01:00:07 PM |
| Object: |
two basic questions |
why doesn't electrons end up in an endless loop in P-type silicon - if atom
A loses an electron to fill a neighbor's (atom B) hole how come (if they're
the closest neighbors) it doesn't get it's newly made hole filled by the
atom B's new electron?
i don't understand how you can change the voltage without tampering with
electric source (changing the voltage of some motherboard component) just by
placing more resistors ? i know V = I * R, but how goddamit? that(placing
resistors) won't create electron inflation/deflation in the
source/destination and that's the only way i'm able to imagine the voltage
as it is...
?
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| User: "Dan Bloomquist" |
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| Title: Re: two basic questions |
03 Aug 2003 07:50:44 PM |
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flekso wrote:
why doesn't electrons end up in an endless loop in P-type silicon - if atom
A loses an electron to fill a neighbor's (atom B) hole how come (if they're
the closest neighbors) it doesn't get it's newly made hole filled by the
atom B's new electron?
Well, it can but not as likely with current in the system.
i don't understand how you can change the voltage without tampering with
electric source (changing the voltage of some motherboard component) just by
placing more resistors ? i know V = I * R, but how goddamit? that(placing
resistors) won't create electron inflation/deflation in the
source/destination and that's the only way i'm able to imagine the voltage
as it is...
Keep it simple. Imagine a water* pipe with a restriction, (resistor), in
the line. Cap one end and apply pressure, (voltage) to the other. There
is no flow, (current) so the pressure is the same on both sides of the
restriction. Take the cap off and now the water can flow. But now there
is a pressure drop across the restriction. In both cases, (cap on, cap
off), there is the same amount of water in the pipe. There is no
excess/lack of water in the system.**
*Consider the water truly incompressible.
** In the real world the water is slightly compressible. The same can be
said of electricity because there will be some extra/lack of charge on
the surface of conductors. But this effect is negligible.
Best, Dan.
--
if( this == NULL )
return that;
.
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| User: "flekso" |
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| Title: Re: two basic questions |
04 Aug 2003 11:57:38 AM |
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Keep it simple. Imagine a water* pipe with a restriction, (resistor), in
the line. Cap one end and apply pressure, (voltage) to the other. There
is no flow, (current) so the pressure is the same on both sides of the
restriction. Take the cap off and now the water can flow. But now there
is a pressure drop across the restriction. In both cases, (cap on, cap
off), there is the same amount of water in the pipe. There is no
excess/lack of water in the system.**
for me this is simple:
50 electrons surplus in one department of battery, 50 deficit in the other
how is it going to help if i place a 10 Kohm resistor between the two ends
(how can this raise voltage) ?
maybe i misunderstood the meaning of the word, voltage = potential (charge
quantity difference)
the driving force here is the search for equilibrium in number of electrons
throughout the system?
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| User: "flekso" |
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| Title: Re: two basic questions |
07 Aug 2003 11:52:42 AM |
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"Dan Bloomquist" <lakeweb@citlink.net> wrote in message
news:3F31F846.4060407@citlink.net...
flekso wrote:
(i wrote)
Keep it simple. Imagine a water* pipe with a restriction, (resistor), in
the line. Cap one end and apply pressure, (voltage) to the other. There
is no flow, (current) so the pressure is the same on both sides of the
restriction. Take the cap off and now the water can flow. But now there
is a pressure drop across the restriction. In both cases, (cap on, cap
off), there is the same amount of water in the pipe. There is no
excess/lack of water in the system.**
maybe i misunderstood the meaning of the word, voltage = potential
(charge
quantity difference)
I'll look into where you got that. Potential= pressure for me.
Best, Dan.
--
if( this == NULL )
return that;
but what about the 50 - 50 example?
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