September 3, 2012 archive

Cross posted from The Stars Hollow Gazette

This is your morning Open Thread. Pour a cup of your favorite morning beverage and review the past and comment on the future.

Find the past “On This Day in History” here.

On this day in 1783, the Treaty of Paris is signed ending the American Revolution

The treaty document was signed at the Hotel d’York – which is now 56 Rue Jacob – by John Adams, Benjamin Franklin, and John Jay (representing the United States) and David Hartley (a member of the British Parliament representing the British Monarch, King George III). Hartley was lodging at the hotel, which was therefore chosen in preference to the nearby British Embassy – 44 Rue Jacob – as “neutral” ground for the signing.

On September 3, Britain also signed separate agreements with France and Spain, and (provisionally) with the Netherlands. In the treaty with Spain, the colonies of East and West Florida were ceded to Spain (without any clearly defined northern boundary, resulting in disputed territory resolved with the Treaty of Madrid), as was the island of Minorca, while the Bahama Islands, Grenada and Montserrat, captured by the French and Spanish, were returned to Britain. The treaty with France was mostly about exchanges of captured territory (France’s only net gains were the island of Tobago, and Senegal in Africa), but also reinforced earlier treaties, guaranteeing fishing rights off Newfoundland. Dutch possessions in the East Indies, captured in 1781, were returned by Britain to the Netherlands in exchange for trading privileges in the Dutch East Indies.

The American Congress of the Confederation, which met temporarily in Annapolis, Maryland, ratified the treaty of Paris on January 14, 1784 (Ratification Day).[1] Copies were sent back to Europe for ratification by the other parties involved, the first reaching France in March. British ratification occurred on April 9, 1784, and the ratified versions were exchanged in Paris on May 12, 1784. It was not for some time, though, that the Americans in the countryside received the news due to the lack of communication.

Oxygen is one of the most fascinating elements for many reasons.  Before we get to it, I first want to point out that the column of the periodic table that starts with nitrogen are called pnictogens, whislt the column starting with oxygen are called chalcogens.  The term pnictogen is recent, dating form the 1950s.  It comes from the Greek plural noun pnikta which means something on the order of “those that are suffocated” in reference to the fact that nitrogen will not support life.  The “gen” part is from the Greek gonos, “born” or “generated”.

Chalcogen comes from the ancient Greek chalkos, meaning “ore” and gonos, and in fact an extremely large number of metal ores contain oxygen or sulfur of both.  Selenium and tellurium are chalcogens that are often found in gold and silver ores.

Time before last we discussed nitrogen and molecular orbital diagrams for it.  If you are not hip to MO diagrams, I suggest you read that part of the link before you try to tackle the MO diagrams for oxygen.