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Charge is not voltage; they have different units.Hi:
An electron has charge of 1.602 × 10^-19 coulombs. Does this mean that
the potential difference -- when comparing the presence to the absence
of -- 1 electron would be 1.602 × 10^-19 volts?
Thanks
A photon does have a traveling electric field, and that fieldOn May 12, 3:00 pm, GreenXenon <glucege...@gmail.com> wrote:
On May 12, 8:48 am, John Larkin
jjlar...@highNOTlandTHIStechnologyPART.com> wrote:
On Tue, 12 May 2009 07:59:31 -0700 (PDT), GreenXenon
glucege...@gmail.com> wrote:
Hi:
An electron has charge of 1.602 × 10^-19 coulombs. Does this mean that
the potential difference -- when comparing the presence to the absence
of -- 1 electron would be 1.602 × 10^-19 volts?
Thanks
Charge is not voltage; they have different units.
Only macroscopic objects, like chunks of metal, have voltages.
If you had two parallel pizza plates floating in space, electrically
neutral, and yanked an electron out of one and stuck it to the other,
then you'd have a voltage between the plates.
The voltage between those pizza plates would be
V = Q / C
where V is in volts
Q is the charge you moved
C is the capacitance between plates.
For, say, 20 pF capacitance between the floating pizza plates, for
every electron you drag across, the voltage between the plates
increases by 8 nanovolts.
If you connect a wire between the charged plates, all those electrons
zoom back home along the wire and the plates again become relatively
neutral, no voltage. The zooming-back flow is "current."
Interesting: One electron can make a lot of volts if it's used to
charge a very small object. I wonder if the concept "capacitance of an
electron" has any meaning. If it did, the electron itself could be
said to have a voltage. A *big* voltage!
John
How many volts-per-meter is the electric field of one 1 Hz photon?
How many inches do you weigh?
How many volts-per-meter is the electric field of one 1 Hz photon?On Tue, 12 May 2009 07:59:31 -0700 (PDT), GreenXenon
glucege...@gmail.com> wrote:
Hi:
An electron has charge of 1.602 × 10^-19 coulombs. Does this mean that
the potential difference -- when comparing the presence to the absence
of -- 1 electron would be 1.602 × 10^-19 volts?
Thanks
Charge is not voltage; they have different units.
Only macroscopic objects, like chunks of metal, have voltages.
If you had two parallel pizza plates floating in space, electrically
neutral, and yanked an electron out of one and stuck it to the other,
then you'd have a voltage between the plates.
The voltage between those pizza plates would be
V = Q / C
where V is in volts
Q is the charge you moved
C is the capacitance between plates.
For, say, 20 pF capacitance between the floating pizza plates, for
every electron you drag across, the voltage between the plates
increases by 8 nanovolts.
If you connect a wire between the charged plates, all those electrons
zoom back home along the wire and the plates again become relatively
neutral, no voltage. The zooming-back flow is "current."
Interesting: One electron can make a lot of volts if it's used to
charge a very small object. I wonder if the concept "capacitance of an
electron" has any meaning. If it did, the electron itself could be
said to have a voltage. A *big* voltage!
John
On May 12, 8:48 am, John Larkin
jjlar...@highNOTlandTHIStechnologyPART.com> wrote:
On Tue, 12 May 2009 07:59:31 -0700 (PDT), GreenXenon
glucege...@gmail.com> wrote:
Hi:
An electron has charge of 1.602 × 10^-19 coulombs. Does this mean that
the potential difference -- when comparing the presence to the absence
of -- 1 electron would be 1.602 × 10^-19 volts?
Thanks
Charge is not voltage; they have different units.
Only macroscopic objects, like chunks of metal, have voltages.
If you had two parallel pizza plates floating in space, electrically
neutral, and yanked an electron out of one and stuck it to the other,
then you'd have a voltage between the plates.
The voltage between those pizza plates would be
V = Q / C
where V is in volts
Q is the charge you moved
C is the capacitance between plates.
For, say, 20 pF capacitance between the floating pizza plates, for
every electron you drag across, the voltage between the plates
increases by 8 nanovolts.
If you connect a wire between the charged plates, all those electrons
zoom back home along the wire and the plates again become relatively
neutral, no voltage. The zooming-back flow is "current."
Interesting: One electron can make a lot of volts if it's used to
charge a very small object. I wonder if the concept "capacitance of an
electron" has any meaning. If it did, the electron itself could be
said to have a voltage. A *big* voltage!
John
How many volts-per-meter is the electric field of one 1 Hz photon?
No. It means that it has an energy of 4.1194e-15 electron-Volts, i.e. thehttp://heasarc.gsfc.nasa.gov/cgi-bin/Tools/energyconv/energyConv.pl
I plugged 6.6e-34 joules into the above website and got a measure of
4.1194e-15 electron-volt. Does this mean that the electric field of
one 1 Hz photon has a strength of 4.1194e-15 volt per meter?
http://heasarc.gsfc.nasa.gov/cgi-bin/Tools/energyconv/energyConv.plOn Tue, 12 May 2009 16:00:28 -0700 (PDT), mrdarr...@gmail.com wrote:
On May 12, 3:00 pm, GreenXenon <glucege...@gmail.com> wrote:
On May 12, 8:48 am, John Larkin
jjlar...@highNOTlandTHIStechnologyPART.com> wrote:
On Tue, 12 May 2009 07:59:31 -0700 (PDT), GreenXenon
glucege...@gmail.com> wrote:
Hi:
An electron has charge of 1.602 × 10^-19 coulombs. Does this mean that
the potential difference -- when comparing the presence to the absence
of -- 1 electron would be 1.602 × 10^-19 volts?
Thanks
Charge is not voltage; they have different units.
Only macroscopic objects, like chunks of metal, have voltages.
If you had two parallel pizza plates floating in space, electrically
neutral, and yanked an electron out of one and stuck it to the other,
then you'd have a voltage between the plates.
The voltage between those pizza plates would be
V = Q / C
where V is in volts
Q is the charge you moved
C is the capacitance between plates.
For, say, 20 pF capacitance between the floating pizza plates, for
every electron you drag across, the voltage between the plates
increases by 8 nanovolts.
If you connect a wire between the charged plates, all those electrons
zoom back home along the wire and the plates again become relatively
neutral, no voltage. The zooming-back flow is "current."
Interesting: One electron can make a lot of volts if it's used to
charge a very small object. I wonder if the concept "capacitance of an
electron" has any meaning. If it did, the electron itself could be
said to have a voltage. A *big* voltage!
John
How many volts-per-meter is the electric field of one 1 Hz photon?
How many inches do you weigh?
A photon does have a traveling electric field, and that field
intensity could be measured in v/m, although it is spatially and
temporally complex. Not a problem I'd care to formulate.
The energy that photon is packing is 6.6e-34 joules. And the photon is
big, would barely fit between the earth and the moon. Energy density
looks fairly low.
John
A way to see that distance doesn't come into it without just acceptingOn Tue, 12 May 2009 17:12:07 -0700, GreenXenon wrote:
http://heasarc.gsfc.nasa.gov/cgi-bin/Tools/energyconv/energyConv.pl
I plugged 6.6e-34 joules into the above website and got a measure of
4.1194e-15 electron-volt. Does this mean that the electric field of
one 1 Hz photon has a strength of 4.1194e-15 volt per meter?
No. It means that it has an energy of 4.1194e-15 electron-Volts, i.e. the
same energy as would be required to move a single electron up a 4.1194e-15
Volt potential gap, or the same energy as would be gained by an electron
accelerating down a 4.1194e-15 Volt gap.
One Joule is one Coulomb-Volt (one Volt is defined as one Joule per
Coulomb). An electron-Volt is the same concept but for the charge on a
single electron rather than a charge of one Coulomb. Distance units don't
come into it.