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Electrostatic demonstrations: electrical field lines between two charged spheres, same polarity

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Physikfan
Wed Aug 24 2016, 10:03AM
Physikfan Registered Member #60240 Joined: Mon May 16 2016, 07:01PM
Location:
Posts: 304
Hello

Electrostatic demonstrations: electrical field lines between two spheres both with the same polarity.

DSC07356trim400x326

The electrical field lines between two equally charged spheres are visible through semolina grains in castor oil, which are in a massive plexiglass box.
After the experiment, the liquid can be stirred with the small white bar magnet, so that the semolina grains are almost in a random distribution again.

Best wishes

Physikfan
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Physikfan
Sun Oct 30 2016, 09:43PM
Physikfan Registered Member #60240 Joined: Mon May 16 2016, 07:01PM
Location:
Posts: 304
Theoretical background:

http://web.mit.edu/viz/EM/visualizations/coursenotes/modules/guide02.pdf
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johnf
Mon Oct 31 2016, 08:41AM
johnf Registered Member #230 Joined: Tue Feb 21 2006, 08:01PM
Location: Gracefield lower Hutt
Posts: 284
Physikfan
your self promotion is getting a little tiring.
Not only this thread but quite a few of your recent posts only have you replying

not good
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Sulaiman
Mon Oct 31 2016, 12:38PM
Sulaiman Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
one of two possibilities;

Physikfan is a maniacal poster - not likely due to content and location
or
folks on 4HV are not interrested in fundamental H.V. demonstrations and principles
and Physikfan will get bored of us and go somewhere that fundamental HV experimentation is actually performed,
or at least appreciated.
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