Talk:Meniscus

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[edit] Comment

Should this page be divided into two pages, with a disambiguation link at the top of each? Robbyslaughter 16:24, 14 May 2005 (UTC)

I always hated chemistry, but I do understand math quite well and I have a pretty good grasp on the calculus of finding volumes in cylindrical containers. How is it possible that "a and b respectively contain the same volume of different liquids"? --M0nstr42 15:04, 7 October 2006 (UTC)

Yeah, and how is this "obvious from the diagram"? That is simply straight bullshit, I'll edit it right now.

[edit] Comment

Pictures need re-drawing

These are awful pictures to illustrate a meniscus! The curve up or down at the circular edges of the container are precisely that --- edge effects. The two menuscuses (sorry, don't know the Latin plural) should be drawn largely horizontal, with curvature confined to the ends. (The understanding is that this represents a cross-section through the liquid and its container.) I'd do it myself except that I don't have the expertise.

The point that evidently puzzled the previous poster is that the curved part of the meniscus really is an "edge effect," thereby having a very minor effect on the measured volume. As my old 1950s British Grammar School Physics Master used to intone while he walked between the lab. benches (when he wasn't swatting boys in the head and sending them to hospital, as happened to me), "Always measure the level of the meniscus!" Once one appreciates that it is a negligfible edge effect, it should be obvious that with the same horizontal level, "a and b respectively contain the same volume of different liquids" --- to all intents and purposes. --Spock2 05:05, 22 March 2007 (UTC) Spock2

[edit] Expert tag on Meniscus

I know this was a couple of weeks ago, but you removed an expert tag from Meniscus. Forgive me if I'm wrong here, but it seems to me that an expert is in fact needed. Perhaps we are working from different definitions of expert here. I was hoping to expand this article to include much of the mathematics behind the meniscus, which currently can't be found anywhere on wikipedia; all the article does is give a basic definition. Perhaps you could assist with this expansion? Or perhaps there was something wrong with the way I tagged the article? Either way, this article definitely needs the assistance of someone besides myself- I've gotten through DiffEQ (barely) but I'm a lot further behind on Physics, and really don't know this stuff well enough to write an article on it. Ninja! 16:14, 27 April 2007 (UTC)

Yes, Ninja from what I understand, the "expert" tag is used where an article is in immediate need of an expert on that subject because there is something technically wrong about the article or that it is in some way presenting misinformation. I read the article, and it seems to be correctly presented. As for a wish to see “the mathematics behind the meniscus” included in the article, the talk page is good for those kind of requests. Now that you have stated that interest, I will keep my eye open for those sorts of equations. If you find them before I do, please drop me a line. Talk later: --Sadi Carnot 18:27, 29 April 2007 (UTC)