User talk:Geek3/Archives/2015

mplwp

Hi, you are creating fine high-quality mathematical and scientific graphics. To let you mark and categorize them easier and in a better way, I changed for you the template {{Created with mplwp}}. You may see how it is used and works in two images, Mplwp zero.svg and a bit different at Mplwp 0 8 15.svg. The template is reduced to SVG and defaulted to "ValidSVG", but when you want to create W3C-invalid code you can set it . The categories Created with Matplotlib (never set it directly as a category!!!) and Images with Python source code are now set more upward in the category tree and not in each file, and {{ValidSVG}} is included for a better category diffusion.
The source code is currently not collapsable, but this can be done if required, for all the SVG created with ... templates.
If you have any question, better do it on my talk page. It is your template, if you want things changed just tell it, as long it fits somehow in the system of the other templates. All your other 310 files can be changed with a VFC task to the new template; currently they categorize into a meta category. Good luck! sarang♥사랑 11:42, 4 March 2015 (UTC)

fractal physics

I have used your artwork in my book fractal physics published by Matador, we emailed in 2012 but my hard drive was encrypted and I have lost your contact details. Your hydrogen eigenstate n4 l3 m1.png is on the cover and credited on the first page, page 15 and finally you are acknowledged on page 42. I would like to send you a copy of the book if you could resend your contact details. Arlington row 17:14, 11 March 2015 (UTC)

Electric dipole

Dear Geek3, I just admired your electric dipole of varying distance between the two charges.

I am working on improving the Wikipedia article "Internal Conversion". Could you please make an electic dipole of fixed distance between the charges, but oscillating values, so that the field oscillates, reversing its sign?

This would make a classical analogue of a nuclear electric dipole transition. Best regards,HPaul (talk) 08:59, 27 April 2015 (UTC)

a question

Hi Geek3,

I'm Solo. I wrote you sometime ago and you helped me a lot to clear some doubts then I had in my mind. now I write you again to ask you for your opinion about a very simple question. it is a very short matter shown at the link below.

https://sites.google.com/site/asingleapproachboard/home

thank you

The solution is given by Maxwell's equations for B. The divergence of B is always 0 and the curl of B is given by the electric field change and the current density. Since there is no changing electric field in your static situation and also no current density inside a hollow cylinder, B must be constant inside of the cylinder. That constant vector value would be given by an external applied field, which is also zero in absence of any other elements. In short, there is no B-field inside of the cylinder.

And by the way for the solid cylinder the field drops linearly towards the center, which is a consequence of Ampere's law, easily seen from the integral equation with cylindrical symmetry. Cheers, Geek3 (talk) 23:03, 21 June 2015 (UTC)

here again

Hi Geek3,

thanks for your answer. though I don't manage well with the ecuations you mention, I supposed the resultant effect of the hollow cylinder could have been somehow similar to that of the Z-Pinch but in a more coherent way, that's generating an homogeneus radial pattern of B-field internal vectors converging towards the core. now I understand I was wrong. on the other hand, it was a too simple difference to have been ignored by scientists. congrats again for your gallery of images. I can see your admirers have grown from my last talk with you, and I'm for certain still among them. I would enjoy so much to test all my foolish ideas with your VFP!!! but I'm unable to use it. (sorry for the new message. I still don't find the way to answer an already existing talk).

VFPt is not really made for quick and easy editing, but to make very accurate and pretty images. There are numerous other applications on the web and a short google search led for example to http://www.falstad.com/mathphysics.html -> 2-D Electrostatics Applet. You can easily play around with it and maybe find even better programs. Geek3 (talk) 20:43, 22 June 2015 (UTC)

A barnstar for you!

	The Graphic Designer's Barnstar
	Thanks for the images you generate!! Nicoguaro (talk) 19:02, 23 June 2015 (UTC)

Thank you, I really appreciate it :-) Geek3 (talk) 19:17, 23 June 2015 (UTC)

Complex gamma function

Dear Geek 3,

I study mathematics. In a few days I'm going to have a presentation about the gamma function and I love your picture of the complex gamma function in 3D on wikipedia. Is it possible that you create me the same way the function abs(gamma[x]*sin(2pix)), so I can show the differences. I tried it, but I can't find another program to draw it than wolfram alpha and there it doesn't look like yours.

Best regards

Are you talking about File:Gamma_abs_3D.png or File:Gamma abs arg.png? They were both created with Mathematica. Do you have it (as a student of mathematics you might)? Geek3 (talk) 09:38, 30 June 2015 (UTC)

attribution

Hello, I would like to use your Sphere_wireframe image (https://commons.wikimedia.org/wiki/File:Sphere_wireframe_10deg_6r.svg or https://commons.wikimedia.org/wiki/File:Sphere_wireframe_10deg_6r_black.svg) as a side illustration within a slide contained in a video of my lecture on a scientific topic for educational purposes. What forms of attribution would be acceptable to you? Sam

Thanks for asking. I recommend to put a copyright remark underneath the image like this:

© 2009 Geek3 / GNU-FDL, commons.wikimedia.org/wiki/File:Sphere_wireframe_10deg_6r.svg

Geek3 (talk) 11:01, 19 September 2015 (UTC)