Here is a simple method to invert an HTML color:

private static string InvertHTMLColor(string htmlColor)

{

htmlColor = htmlColor.Replace("#", string.Empty).Trim();

if (string.IsNullOrEmpty(htmlColor) || htmlColor.Length != 6)

     throw new ArgumentException("Invalid HTML color.");

return string.Format("#{0}{1}{2}",

     InvertChannel(htmlColor.Substring(0, 2)),

     InvertChannel(htmlColor.Substring(2, 2)),

     InvertChannel(htmlColor.Substring(4, 2)));

}

private static string InvertChannel(string channel)

{

channel = channel.Trim();

if (string.IsNullOrEmpty(channel) || channel.Length != 2)

     throw new ArgumentException("Invalid color channel.");

int a = int.Parse(channel.Substring(0, 1), System.Globalization.NumberStyles.HexNumber);

int b = int.Parse(channel.Substring(1, 1), System.Globalization.NumberStyles.HexNumber);

return (255 - ((16 * a) + b)).ToString("X");

}

Attached is the source for a simple TCP proxy server. I whipped it up pretty quickly so it probably needs some refactoring if you plan to use it in production. The server class is loosely based on the Cassini implementation. You can set the listen port and forward host/port in the app config:

<configuration>

    <appSettings>

        <add key="listenPort" value="443"/>

        <add key="forwardHost" value="wush.net"/>

        <add key="forwardPort" value="443"/>

    </appSettings>

</configuration>

Ahhh! I finally got my 3.091 Into to Solid State Chemistry textbook. Its a pretty big book so I'll probably break my back trying to carry it on the train each day. In any event the COOP has a few of these left and from what I hear the book will change for next semester. So anyone following the OCW might want to order one before they run out. These are custom books from Wiley, specially for 3.091, so you cant get these at Borders or any chain store... I have no idea how different the book will be next semester but it may be different enough were you cant follow the OCW. The COOP is selling used copies for $84.

Nomenclature is contrasted with the tale of Romeo and Juliet:

Romeo: Shall I hear more or shall I speak at this?
Sadoway: Fellas, when this opportunity comes up don't say a word... Don't interrupt! Romeo wisely takes that path...

...

Juliet: What's in a name? That which we call a rose by any other word, would smell as sweet. So Romeo would, were he not Romeo called, retain that dear perfection which he owes without that title. Romeo, doth thy name! And for that name, which is no part of thee, take all myself.
Sadoway: That's an offer...

In Chemistry, names are important. They must be agreed upon by consensus so that we know what each other is talking about. Sadoway also contrasts a lack of agreement to Alice in Wonderland where the characters give words the meaning they intend.

Chemistry possibly had roots in ancient Egypt with embalming of the dead. These chemical processes were referred to in hieroglyphics as khemeia (Key may uh ?). The Egyptians where very keen on preserving the dead for their afterlife journey so those who knew how to employ these chemical processes of embalming were greatly valued. This later expanded to dying of cloth, making of colored glass and metals extraction.

400 BCE, Chemistry begins to move from "craft to science" with Democritus, a Greek Philosopher. At that time only about 9 discreet elements (found in nature) were known (Fe, Cu, Ag, Au, Hg, C, Sn, Pb, S). (Interesting side point; where do we find pure elemental iron in nature {Not Hematite, Fe₂O₃}? Meteorites...) So with only this information Democritus stated that the physical world is made up of VOID + BEING. He also stated that being is made up of an infinity of "atoms" (From the Greek word atomos which means 'indivisible', a {not} + tomo {divisible}) which are small particles that are indivisible. His description of void is strikingly similar to vacuum as we know it today. Sadoway says "That takes us right up to E=mc²!"

Unfortunately, this fairly accurate description of the physical world by Democritus is supplanted by Aristotle's view of the 4 essences (Or elements); Fire, Earth, Water & Air.

Combinations of these can produce compounds such as "dry", a combination of "fire" & "earth". Sadoway says "This is nuts!! This is nuts!! This is so stupid it defies description!". The fifth essence, that which comprises the heavenly bodies, can be obtained by distilling any of the 4 essences. This was the "scientific" view up through the middle ages.

As time went on however more elements were discovered. And they were characterized by their properties. Now we are getting back to science.

1776: H, Fe, Co, Ni, Cu, Zn, Ag, Pt, Au, Hg, C, N, O, P, S, As, Sn, Sb, Pb, Bi

The first characterization of the elements came from John Dalton who created a listing of the elements in 1803 where he assigned symbols and sorted the elements by atomic mass. 

I will be posting my lecture notes from the Fall 2005 3.091 lectures (Introduction to Solid State Chemistry, MIT). Mainly I will be doing this for my own benefit, as expressing something you just learned helps with retention and comprehension, but maybe others will find them helpful as well. I will only be including notes relevant to the subject, not any auxiliary info (viz. administrative info). As I post notes they will be linked to in the following table.

If you are programmatically updating the value of a lookup field and it doesn't seem to update, you need to trip "dirty" flag on that field. If you don't, SP wont know that the list item needs to be updated. Basically all you do is set the field to itself and this will mark the field as dirty. Here is an example: