User talk:PaulLowrance

User page
Yes, it's my interpretation, but I think most other editors would agree with it - a lengthy page detailing your research, using images hosted on Wikipedia servers, clearly fits the criteria of "extensive writings and material on topics having virtually no chance whatsoever of being directly useful to the project, its community, or an encyclopedia article" - I've nothing against the content itself, it's just not directly useful to any specific articles in the Wikipedia project, so you shouldn't be hosting it on Wikipedia servers. Wikipedia is not your web host. --McGeddon (talk) 16:48, 1 May 2010 (UTC)


 * I'm not looking for a web host here. The images are mostly white space, line work, and take hardly any disk space. It's just an outline of my hobbies. That's all I'll post on my page here. Nothing more. I've seen wikipedia veterans post jpeg photos, which take a lot more disk space.


 * Also if need be I could compress the images to practically no space and update them. —Preceding unsigned comment added by PaulLowrance (talk • contribs)


 * It's not about the file sizes, it's just basic user page policy that "you should avoid substantial content on your user page that is unrelated to Wikipedia". The line is that "Wikipedia is not your web host" not that "Wikipedia is your web host, so long as you compress the images". --McGeddon (talk) 11:50, 7 May 2010 (UTC)


 * Then show the WikiPedia reference stating exactly how "substantial" a user page can be. And I have to disagree that it's unrelated to WikiPedia. *My user* page is about *my* research in the alternative energy field. Show me a topic that's unrelated to wikipedia.


 * Anyway, go ahead and have your people delete it. My user page gets practically zero traffic. Deleting it is not going harm me or hinder my research in any way. —Preceding unsigned comment added by PaulLowrance (talk • contribs)


 * WP:UPYES says "For example a 5 page resumé and advertising for your band will probably be too much, a brief 3 sentence summary that you work in field X and have a band named Y will be fine.", WP:UPNO says "Extensive writings and material on topics having virtually no chance whatsoever of being directly useful to the project, its community, or an encyclopedia article." - keeping a research blog on your user page is not directly useful to the alternative energy article.
 * To formally request deletion once you've taken a copy for your own uses (you can just save the page from your browser and upload it to a web host somewhere), just edit a template onto the top of the page. --McGeddon (talk) 08:33, 12 May 2010 (UTC)


 * It's not a blog. It's an outline of my life. That example uses "resumé." It's not my resume, so that's an invalid example. Also I'm using one web page.

An error in the Simple mathematical evidence
It is not true that a toroid core can be saturated by a current proportional to the strength of an external magnetic field: in a simple case when there is no external field, the core is not saturated without any current. Also, a voltage induced (EMF) in a coil on the core depends on the external field; just the voltage dependence consumes from the current source the energy, which the magnet gets due to the interaction. Nothing odd happens. However, usually such a circuit has significant losses, which camouflage the effect of the EMF, so it can be overlooked if measurements aren't precise enough.

Considering measurements of currents in pA range: a device for such a measurement can be done using cheap parts, I made one for computer measurements using cheapest ADC and opamps, getting sub-pA precision. However, it required good isolation (critical connections outside PCB), screening (or it detects electric field changes), and good cables (a cable can generate charges when moved, due to temperature change, etc.). If you see a 10pA current from a diode, there are many effects to consider, e.g. electrochemical - due to oxidation of the semiconductor there, even a small diode has enough reserve for hundreds years...

JerzyTarasiuk (talk) 16:56, 24 July 2011 (UTC)