| Topic: |
Science > Physics |
| User: |
"Sam Wormley" |
| Date: |
26 Jul 2005 09:16:25 PM |
| Object: |
Electric fields move water droplets |
Electric fields move water droplets (Jul 26)
http://physicsweb.org/article/news/9/7/14
It is usually a good idea to keep water away from electrical equipment
but researchers in Japan have discovered a new effect by breaking this
rule. Masahide Gunji and Masao Washizu of the University of Tokyo have
shown that electric fields can be used to move water droplets around a
solid surface. Their work could lead to new ways to perform chemistry
experiments much faster than is possible at present (J. Phys. D38
2417).
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| User: "Bob Eldred" |
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| Title: Re: Electric fields move water droplets |
27 Jul 2005 09:47:18 AM |
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"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:Z7CFe.182351$x96.179770@attbi_s72...
Electric fields move water droplets (Jul 26)
http://physicsweb.org/article/news/9/7/14
It is usually a good idea to keep water away from electrical equipment
but researchers in Japan have discovered a new effect by breaking this
rule. Masahide Gunji and Masao Washizu of the University of Tokyo have
shown that electric fields can be used to move water droplets around a
solid surface. Their work could lead to new ways to perform chemistry
experiments much faster than is possible at present (J. Phys. D38
2417).
Duh! How do you think an Ink Jet Printer works? Electric fields move water
droplets...Not exactly a new revolutionary concept. Am I missing something
or are these guys re-inventing the wheel?
Bob
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| User: "Richard Henry" |
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| Title: Re: Electric fields move water droplets |
27 Jul 2005 11:43:56 AM |
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"Bob Eldred" <nsmontassoc@yahoo.com> wrote in message
news:be463$42e79e5f$42a7d082$16818@msgid.meganewsservers.com...
"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:Z7CFe.182351$x96.179770@attbi_s72...
Electric fields move water droplets (Jul 26)
http://physicsweb.org/article/news/9/7/14
It is usually a good idea to keep water away from electrical
equipment
but researchers in Japan have discovered a new effect by breaking
this
rule. Masahide Gunji and Masao Washizu of the University of Tokyo
have
shown that electric fields can be used to move water droplets around
a
solid surface. Their work could lead to new ways to perform
chemistry
experiments much faster than is possible at present (J. Phys. D38
2417).
Duh! How do you think an Ink Jet Printer works?
By piezoelectric drivers or thermal impulse.
http://home.howstuffworks.com/inkjet-printer3.htm
Electric fields move water
droplets...Not exactly a new revolutionary concept. Am I missing something
Yes.
or are these guys re-inventing the wheel?
No.
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| User: "Jan Panteltje" |
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| Title: Re: Electric fields move water droplets |
27 Jul 2005 10:00:13 AM |
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On a sunny day (Wed, 27 Jul 2005 07:47:18 -0700) it happened "Bob Eldred"
<nsmontassoc@yahoo.com> wrote in
<be463$42e79e5f$42a7d082$16818@msgid.meganewsservers.com>:
"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:Z7CFe.182351$x96.179770@attbi_s72...
Electric fields move water droplets (Jul 26)
http://physicsweb.org/article/news/9/7/14
It is usually a good idea to keep water away from electrical equipment
but researchers in Japan have discovered a new effect by breaking this
rule. Masahide Gunji and Masao Washizu of the University of Tokyo have
shown that electric fields can be used to move water droplets around a
solid surface. Their work could lead to new ways to perform chemistry
experiments much faster than is possible at present (J. Phys. D38
2417).
Duh! How do you think an Ink Jet Printer works? Electric fields move water
droplets...Not exactly a new revolutionary concept. Am I missing something
or are these guys re-inventing the wheel?
Well, there are basically 2 types of inket i know about:
1) HP: ink gets heated and jetted out as a bubble.
2) Epson: Piezzo electric drive.
But of cause the recent thread about electrostatic spray painting gun did
use electric fields to move paint droplets... so whats new.
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| User: "Evgenij Barsukov" |
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| Title: Re: Electric fields move water droplets |
27 Jul 2005 02:52:40 PM |
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Jan Panteltje wrote:
On a sunny day (Wed, 27 Jul 2005 07:47:18 -0700) it happened "Bob Eldred"
<nsmontassoc@yahoo.com> wrote in
<be463$42e79e5f$42a7d082$16818@msgid.meganewsservers.com>:
"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:Z7CFe.182351$x96.179770@attbi_s72...
Electric fields move water droplets (Jul 26)
http://physicsweb.org/article/news/9/7/14
It is usually a good idea to keep water away from electrical equipment
but researchers in Japan have discovered a new effect by breaking this
rule. Masahide Gunji and Masao Washizu of the University of Tokyo have
shown that electric fields can be used to move water droplets around a
solid surface. Their work could lead to new ways to perform chemistry
experiments much faster than is possible at present (J. Phys. D38
2417).
Duh! How do you think an Ink Jet Printer works? Electric fields move water
droplets...Not exactly a new revolutionary concept. Am I missing something
or are these guys re-inventing the wheel?
Well, there are basically 2 types of inket i know about:
1) HP: ink gets heated and jetted out as a bubble.
2) Epson: Piezzo electric drive.
But of cause the recent thread about electrostatic spray painting gun did
use electric fields to move paint droplets... so whats new.
Electrostatic spray painting (just as electrostatic dust precipitators)
are not _realy_ electrostatic. They both use corona discharge, which
causes ion to flow from corona to collector. These ions charge the
particles (of paint or of dust correspondingly) which than get attracted
to the collector. So, you first charge the particle than apply field to
it.
At the other hand, the Japanies seem to talke about moving uncharged
particles (unless they miss some corona discharge going on somewhere
in their apparatus, which charges the liquid).
Regards,
Evgenij
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| User: "tj Frazir" |
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| Title: Re: Electric fields move water droplets |
27 Jul 2005 03:21:01 PM |
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Ion aluninum paint .
NOTICE water wount work by its self.
Put some aluninum in the water it might work.
But the drops are moving due the high frequencey vibrations from the
curent.
A high frequancy curent makes vibrations.
This shows jap physics is using the media to secure funding via
public intrest.
They have learned well from thier amerikkkan counterparts.
ELECTROSTATIC PHENOMENA IN POWDER COATING
Address:http://66.102.7.104/search?q=cache:Kl8Gj62TM90J:www.nordson.com/NR/rdonlyres/5EF74AA5-3C22-4E49-A6C4-3D2197E9EB9F/0/PWR1164.pdf+powder+coating+ion&hl=en&ie=UTF-8
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| User: "T Wake" |
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| Title: Re: Electric fields move water droplets |
27 Jul 2005 03:36:15 PM |
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"tj Frazir" <GravityPhysics@webtv.net> wrote in message
news:6594-42E7ECAD-73@storefull-3217.bay.webtv.net...
boring nonsense
You really do have too much spare time on your hands.
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| User: "MorituriMax" |
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| Title: Re: Electric fields move water droplets |
27 Jul 2005 11:41:18 PM |
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"T Wake" <taswakeAt@hotmail.com> wrote in message
news:876dnc1UDtfYbXrfRVnyuQ@pipex.net...
"tj Frazir" <GravityPhysics@webtv.net> wrote in message
news:6594-42E7ECAD-73@storefull-3217.bay.webtv.net...
boring nonsense
You really do have too much spare time on your hands.
He will until momma makes him get out and get a job..
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| User: "Jan Panteltje" |
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| Title: Re: Electric fields move water droplets |
27 Jul 2005 04:17:17 PM |
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On a sunny day (Wed, 27 Jul 2005 14:52:40 -0500) it happened Evgenij Barsukov
<evgenij_b_no_spam@yahoo.com> wrote in <dc8om9$6tq$1@home.itg.ti.com>:
Jan Panteltje wrote:
On a sunny day (Wed, 27 Jul 2005 07:47:18 -0700) it happened "Bob Eldred"
<nsmontassoc@yahoo.com> wrote in
<be463$42e79e5f$42a7d082$16818@msgid.meganewsservers.com>:
"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:Z7CFe.182351$x96.179770@attbi_s72...
Electric fields move water droplets (Jul 26)
http://physicsweb.org/article/news/9/7/14
It is usually a good idea to keep water away from electrical equipment
but researchers in Japan have discovered a new effect by breaking this
rule. Masahide Gunji and Masao Washizu of the University of Tokyo have
shown that electric fields can be used to move water droplets around a
solid surface. Their work could lead to new ways to perform chemistry
experiments much faster than is possible at present (J. Phys. D38
2417).
Duh! How do you think an Ink Jet Printer works? Electric fields move water
droplets...Not exactly a new revolutionary concept. Am I missing something
or are these guys re-inventing the wheel?
Well, there are basically 2 types of inket i know about:
1) HP: ink gets heated and jetted out as a bubble.
2) Epson: Piezzo electric drive.
But of cause the recent thread about electrostatic spray painting gun did
use electric fields to move paint droplets... so whats new.
Electrostatic spray painting (just as electrostatic dust precipitators)
are not _realy_ electrostatic. They both use corona discharge, which
causes ion to flow from corona to collector. These ions charge the
particles (of paint or of dust correspondingly) which than get attracted
to the collector. So, you first charge the particle than apply field to
it.
At the other hand, the Japanies seem to talke about moving uncharged
particles (unless they miss some corona discharge going on somewhere
in their apparatus, which charges the liquid).
Interesting, lets assume for a moment (its late here, I am sleepy ;-) )
that you have a piece of metal with a droplet on it.
Water conducts.
Connect it to the negative pole of a voltage source, and add a metal plate
just above it, connected to the positive pole.
The positive pole will attract electrons in the atoms in the negative droplet
I think, even without corrona.
And because those electrons are bound to those water atoms, the water droplet.
Is this right?
Could be different?
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| User: "Evgenij Barsukov" |
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| Title: Re: Electric fields move water droplets |
28 Jul 2005 08:47:58 AM |
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Jan Panteltje wrote:
But of cause the recent thread about electrostatic spray painting gun did
use electric fields to move paint droplets... so whats new.
Electrostatic spray painting (just as electrostatic dust precipitators)
are not _realy_ electrostatic. They both use corona discharge, which
causes ion to flow from corona to collector. These ions charge the
particles (of paint or of dust correspondingly) which than get attracted
to the collector. So, you first charge the particle than apply field to
it.
At the other hand, the Japanies seem to talke about moving uncharged
particles (unless they miss some corona discharge going on somewhere
in their apparatus, which charges the liquid).
Interesting, lets assume for a moment (its late here, I am sleepy ;-) )
that you have a piece of metal with a droplet on it.
Water conducts.
Here is one wrong assumption. Only dirty water conducts, distilled
degased H2O is a very good insulator.
Connect it to the negative pole of a voltage source, and add a metal plate
just above it, connected to the positive pole.
The positive pole will attract electrons in the atoms in the negative droplet
I think, even without corrona.
Let's say the droples are made out of electrolyte and are indeed
_ionicaly_ conductive. But they are still not _electronicaly_
conductive, so droplet would not have any free electrons on its surface.
All electrons will remain on the surface of the metal and water will
have no charge.
Different story if your electric field is so large that it can polarize
the liquid. Once polarized, it has certain dipole moment that could be
use to cause rotation of the molecules along their polarization axes
(orient the molecules) through applying another variable field
perpendicular to the first. This would heat the liquid (at resonance
frequency), and would cause change of their adsorption specturm.
But still not move it.
There is a known effect that paramagnetic materials can levitate
in strong magnetic field, maybe that is what they are doing?
But for pure electrostatic case I would guess it is some missed corona
discharge. At high voltages small droplect can easily become "corona
electrodes" because they are deviating from smooth surface and so
have higher E on the surface.
And because those electrons are bound to those water atoms, the water droplet.
Is this right?
Could be different?
Regards,
Evgenij
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| User: "Jan Panteltje" |
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| Title: Re: Electric fields move water droplets |
28 Jul 2005 11:07:59 AM |
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On a sunny day (Thu, 28 Jul 2005 08:47:58 -0500) it happened Evgenij Barsukov
<evgenij_b_no_spam@yahoo.com> wrote in <dcanmf$fm2$1@home.itg.ti.com>:
Interesting, lets assume for a moment (its late here, I am sleepy ;-) )
that you have a piece of metal with a droplet on it.
Water conducts.
Here is one wrong assumption. Only dirty water conducts, distilled
degased H2O is a very good insulator.
True
There is a known effect that paramagnetic materials can levitate
in strong magnetic field, maybe that is what they are doing?
Dunno.
But for pure electrostatic case I would guess it is some missed corona
discharge. At high voltages small droplect can easily become "corona
electrodes" because they are deviating from smooth surface and so
have higher E on the surface.
have a look here:
http://www.memagazine.org/backissues/may04/features/wpglass/wpglass.html
they have, i na Frencjh clellphone with camera made a zoom objective.
In the 'electronic paper' black droplets are moved by an electric charge.
Fun, maybe that electrionic paper we wil lsee more of, there was a picture
of a clock recently:
http://www.heise.de/newsticker/result.xhtml?url=/newsticker/meldung/60784&words=Electronic%20Paper
It has a nice picture, text is in German, but it basically says it is a
prototype by Citizen watch makers.
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| User: "tj Frazir" |
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| Title: Re: Electric fields move water droplets stupid |
27 Jul 2005 11:18:53 AM |
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Do you understand just how stupid this is ?
Vibrations of the curent move the drops .
No water mole will lock dipoles .
No electode is vibration free.
The morons are painting a smile on a dog and claim the dog thinks its
funnie.
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| User: "T Wake" |
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| Title: Re: Electric fields move water droplets stupid |
27 Jul 2005 03:23:29 PM |
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"tj Frazir" <GravityPhysics@webtv.net> wrote in message
news:11178-42E7B3ED-41@storefull-3218.bay.webtv.net...
Do you understand just how stupid this is ?
Most sensible thing you have ever said.
You are stupid and everyone understands that.
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