Irenaeus, Siteadmin, Check users, oversight, Administrators
351,089
edits
Changes
Jump to navigation
Jump to search
mLine 8:
Line 8: − + Line 38:
Line 38: − + − + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + − :Who are you?? [[User:PhyllisS|PhyllisS]] 20:02, 7 September 2009 (EDT)+ − ::You're joking.. right? Yeesh~ Who else has you as "Phynix" in their list of cell phone contacts? − ::Oh, and feel free to block me with your sysopship (congrats on gaining them!). [[User:JacobI|JacobI]] <sup>[[User_talk:JacobI|Φιχινγ Θινγσ]]</sup> 23:39, 7 September 2009 (EDT)
Reverted edits by SiPhyllisSchlafly (talk) to last revision by CPalmer
Hey Phyllis! So this is you?? And congrats on Princeton! [[User:AddisonDM|AddisonDM]] 19:31, 9 May 2009 (EDT)
Hey Phyllis! So this is you?? And congrats on Princeton! [[User:AddisonDM|AddisonDM]] 19:31, 9 May 2009 (EDT)
::HURRAY for Mechanical and Aerospace Engineering! Liz is back too; all the 2nd year grad students are studying for their comprehensive exams in January. It's a big deal. :) 01:24, 11 September 2009 (EDT)
== Promotion ==
== Promotion ==
Great job our newest administrator! --[[User:Jpatt|Jpatt]] 22:40, 28 July 2009 (EDT)
Great job our newest administrator! --[[User:Jpatt|Jpatt]] 22:40, 28 July 2009 (EDT)
:Feel free to. I put that up before you enlightened me on Poincaré's wonderful contributions. [[User:PhyllisS|PhyllisS]] 00:37, 5 September 2009 (EDT)
:Feel free to. I put that up before you enlightened me on Poincaré's wonderful contributions. [[User:PhyllisS|PhyllisS]] 00:37, 5 September 2009 (EDT)
==It's been one year..==
== Forgot other account username and pass, delete this account if it's a problem, thanks! ==
And you know, Φnix, I miss talking to you. All the interesting scientific/mathematical things you had to say. I really hope to see you grow during your college years. =^_^= [[User:JacobI|JacobI]] <sup>[[User_talk:JacobI|Φιχινγ Θινγσ]]</sup> 12:40, 7 September 2009 (EDT)
[[User:AdamDavid|AdamDavid]] 07:30, 1 December 2009 (EST)
== Things we don't do at Conservapedia ==
[http://conservapedia.com/index.php?title=Talk:Biblical_scientific_foreknowledge&diff=prev&oldid=793340 We don't point out people's spelling errors on talk pages]. Thank you. And sorry again for earlier today. [[User:JonG|~]] [[User_talk:JonG|JonG]] [[Special:Contributions/JonG|~]] 15:14, 9 July 2010 (EDT)
:I can point out spelling errors wherever I please. :P [[User:PhyllisS|PhyllisS]] 22:50, 9 July 2010 (EDT)
== exact (differential) equation ==
While looking through recent mathematical changes (a hobby of mine) I came across your [[exact equation]] article. I have a few comments on improving it.
The first thing that caught my attention was the title. "Exact equation"? Aren't all equations exact? This is mathematics, after all! The problem is that "exact" has a very specialized meaning in this context. I would suggest renaming the page to "exact differential equation".
'''You need to motivate this with an example!!!''' And you need to say something like
"The solution is φ = constant, where φ is determined by integrating M and N." I believe the integration is something like
:<math>\phi(t, y) = \int_0^t M(s, 0) ds + \int_0^y N(t, s) ds</math>
but I'm not sure I have it right. Please check that.
Go through the example to find φ by integrating, then check that
:<math>\frac{\partial \phi}{\partial t} = M</math>
and
:<math>\frac{\partial \phi}{\partial y} = N</math>
and that any function φ = some constant, when turned into the corresponding dy/dt, satisfies the original equation. Be sure to emphasize that one must check first that
:<math>\frac{\partial M}{\partial y} = \frac{\partial N}{\partial t}</math>
(That's the condition for "exactness" of the differential form M dt + N dy.)
And take out phrases like "only write once in the combined expression" and "plug into the quadratic formula" unless you give examples of the combined expression and the quadratic equation that arises.
Finally, you can make equations look like big-as-life equations by putting a "\," at the end, just before the closing <nowiki></math></nowiki>. See [[Tips_for_writing_math_and_science_articles]] for more info.
, [[User:SamHB|SamHB]] 09:33, 29 July 2010 (EDT)
: SamHB: Thank you so, so much for your comments! You're absolutely right; my page was not up to par, and I was wondering how to better explain exact differential equations (and make my equations larger!) Also, that is a good hobby. My hobby is studying physics/quantum mechanics/relativity, even though I am a mechanical engineer by trade. :-D [[User:PhyllisS|PhyllisS]] 00:55, 31 July 2010 (EDT)
== Effects of Relativity and the GPS ==
You introduced the following quote on [[Talk:Counterexamples to Relativity]]:
''The Time Service Department – a department of the U. S. Navy - states: “The Operational Control System (OCS) of the Global Positioning System (GPS) does not include the rigorous transformations between coordinate systems that Einstein’s general theory of relativity would seem to require – transformations to and from the individual space vehicles (SVs), the Monitor Stations (MSs), and the users on the surface of the rotating earth, and the geocentric Earth Centered Inertial System (ECI) in which the SV orbits are calculated. There is a very good reason for the omission: the effects of relativity, where they are different from the effects predicted by classical mechanics and electromagnetic theory, are too small to matter – less than one centimeter, for users on or near the earth.” ''
Have you read the article ''GPS and Relativity: An Engineering Overview'' by Henry F. Fliegel and Raymond S. DiEsposti? I don't think that it means what you think it means :-)
I elaborated on this [[Talk:Counterexamples_to_Relativity#GPS_revisited|here]], [[Talk:Counterexamples_to_Relativity#Reversion_of_my_edit|here]] and [[Talk:Counterexamples_to_Relativity#Quote_mine|here]].
I'd like to get your input on this!
[[User:RonLar|RonLar]] 08:46, 16 August 2010 (EDT)