Re: Error in Wikipedia article: Faraday's law of induction


<phil-news-nospam@xxxxxxxx> wrote news:g5j9i70ftv@xxxxxxxxxxxxxxxxxxxx
On Tue, 15 Jul 2008 10:25:45 +0200 "Szczepan Bia?ek" <sz.bialek@xxxxx>
wrote:
|
| <phil-news-nospam@xxxxxxxx> wrote news:g5fsot3g44@xxxxxxxxxxxxxxxxxxxx
|> On Mon, 14 Jul 2008 16:42:08 +0200 "Szczepan Bia?ek" <sz.bialek@xxxxx>
|> wrote:
|> | |
|> | Storm clouds are high voltage generators (Armstrong and Kelvin). As
such
|> | they must send electrons in ALL directions.
|>
|> How can a storm cloud generator a charge if it would send electrons in
all
|> directions? Do these new charges emerge from some kind of singularity
in
|> the middle of the cloud?
|
| A storm cloud generate the high VOLTAGE not a charge. The Earth has the
| excess of electrons so the atmosphere too. But currents and lightnings
take
| place only if the difference of voltage exist. Water droplets work like
the
| capacitor. Small drops in cloud small voltage, large drops large voltage
| (see Kelvins high voltage generator). In a storm cloud are stored heat
and
| electrons. The both must be dissipated when the cloud disappear.

If there is a voltage and no current, there is a charge. That's the
initial
state of the clouds.

A capacitor charged up has voltage and charge. Voltage is just the
density
of a change (the same charge spread over more capacitors has less
voltage).

If small drops join together the charge is the same but the voltage rise.
The volume is proportional to r^3 and capacitance to radius.
S*



.

Relevant Pages

  • Re: transistors: so confusing!!
    ... Put a forward voltage across that diode and electrons will flow ... out of the emitter into the base (i.e. in a NPN transistor). ... More voltage on the base, more emitter current and so more of it ... A bjt is a *charge* operated device. ...
    (sci.electronics.basics)
  • Re: capacitor questions
    ... electrons were repelling each other with a force great enough that they ... There is a potential for doing work on the stored charge; ... potential is the voltage. ... Imagine a capacitor formed of two large plates with some separation ...
    (sci.electronics.design)
  • Re: transistors: so confusing!!
    ... It is indeed possible for a charge to move with no voltage. ... a voltage is initially required to get the charges moving ... Put a forward voltage across that diode and electrons will flow ...
    (sci.electronics.basics)
  • Re: Does electrostatic charge keep a cloud up?
    ... Under positively charged cloud regions there surely is a surplus of electrons, while under negatively charged cloud parts there is a lack of electrons on the ground. ... or (one can see that ground charge is negative under the small centre of positive charge at the rain cloud base and positive under the (negatively charged) remaining part of the cloud base - the negative ground charge in fair-weather conditions is not depicted. ... I means that the average charge per droplet would be 0.00327 electrons - hence most such droplets are not charged, but one out of 306 carries a charge of one electron. ...
    (sci.geo.meteorology)
  • Re: Error in Wikipedia article: Faradays law of induction
    ... What becomes important in breakdown (, is not the total voltage to ... ground but the high fields in the vicinity of this large charge. ... No- the absolute earth voltage is a chimera. ... know that air has an excess of electrons? ...
    (sci.physics.electromag)