Xenon
Xenon is a chemical element with symbol Xe and atomic number 54. It is a colorless, dense, odorless noble gas, that occurs in the Earth's atmosphere in trace amounts. Although generally unreactive, xenon can undergo a few chemical reactions such as the formation of xenon hexafluoroplatinate, the first noble gas compound to be synthesized.
Naturally occurring xenon consists of eight stable isotopes. There are also over 40 unstable isotopes that undergo radioactive decay. The isotope ratios of xenon are an important tool for studying the early history of the Solar System. Radioactive xenon-135 is produced by beta decay from iodine-135 (which is a product of nuclear fission), and it acts as the most significant neutron absorber in nuclear reactors.
Xenon is used in flash lamps and arc lamps, and as a general anesthetic. The first excimer laser design used a xenon dimer molecule (Xe2) as its lasing medium, and the earliest laser designs used xenon flash lamps as pumps. Xenon is also being used to search for hypothetical weakly interacting massive particles and as the propellant for ion thrusters in spacecraft.
Celier Xenon 2
The Celier Xenon 2 (also variously referred to by the manufacturer as the Xenon II) is a series of Polish autogyros that was designed by Frenchman Raphael Celier and produced by his company, Celier Aviation of Piotrków Trybunalski, Poland. The aircraft is supplied as a kit for amateur construction or as a complete ready-to-fly-aircraft.
Design and development
The side-by-side configuration Xenon 2 complements the tandem seat Celier Kiss series of autogyros. The Xenon 2 series all feature a single main rotor, tricycle landing gear, a low-set twin-boom T-tail, a fully enclosed two seat cockpit and a choice of engines, all mounted in pusher configuration.
One hundred Xenon 2s had been completed by 2011. The design has been developed into the three seat Celier Xenon 3.
Variants
Specifications (Xenon 2 RT)
Data from Bayerl
General characteristics
Xenon (nightclub)
Xenon was a popular New York City nightclub. Xenon was a popular disco in Manhattan in the late 1970s and early 1980s. It was located at 124 West 43rd St in the former Henry Miller Theater which prior to Xenon had been renamed Avon-at-the-Hudson and was operating as a porn house. Xenon was the only nightclub popular enough to compete with Studio 54. The site is now the Stephen Sondheim Theater.
Founding of Xenon
Xenon was founded in June 1978 by Howard Stein and Peppo Vanini. Stein had been a promoter who had brought rockers such as The Who, David Bowie, Rod Stewart, and the Rolling Stones to New York City.Vanini ran some of the greatest clubs in Europe including Regines. He and Peppo Vanini had met at Studio 54. Madelyn Fudeman was the publicity person.
Ambiance
Xenon was regarded as much more of a "Fashion Crowd", while Studio 54 was more Hollywood. Still, many celebrities such as Andy Warhol, Halston, Michael Jackson, Jack Nicholson, Mick Jagger and Jerry Hall, Tom Cruise, Richard Avedon, Cher, O.J. Simpson, Christopher Reeve, Elton John, Roger Moore, John McEnroe, Tony Curtis, Brooke Shields, David Kennedy, John F. Kennedy Jr. and Robin Williams frequented the club. The walls were silver and rays of light came out from a giant "X" above the dance floor. People at Xenon often liked to dance with fewer clothes than people at Studio 54, sometimes wearing swimsuits while dancing. Xenon was the first night club to provide go-go boxes for amateur go-go dancers to dance on. This got many people interested in go-go dancing. Xenon was featured in a Life magazine article about disco. The full-time Disc-Jockey (DJ) was Tony Smith and the part-time DJ was John "Jellybean" Benitez, who later had an affair with Madonna.
Conclusion (music)
In music, the conclusion is the ending of a composition and may take the form of a coda or outro.
Pieces using sonata form typically use the recapitulation to conclude a piece, providing closure through the repetition of thematic material from the exposition in the tonic key. In all musical forms other techniques include "altogether unexpected digressions just as a work is drawing to its close, followed by a return...to a consequently more emphatic confirmation of the structural relations implied in the body of the work."
For example:
Facebook features
Facebook is a social network service website launched on February 4, 2004. This is a list of software and technology features that can be found on the Facebook website.
Facebook structure
News Feed
On September 6, 2006, Ruchi Sanghvi announced a new home page feature called News Feed. Originally, when users logged into Facebook, they were presented with a customizable version of their own profile. The new layout, by contrast, created an alternative home page in which users saw a constantly updated list of their friends' Facebook activity. News Feed highlights information that includes profile changes, upcoming events, and birthdays, among other updates. This has enabled spammers and other users to manipulate these features by creating illegitimate events or posting fake birthdays to attract attention to their profile or cause. News Feed also shows conversations taking place between the walls of a user's friends. An integral part of the News Feed interface is the Mini Feed, a news stream on the user's profile page that shows updates about that user. Unlike in the News Feed, the user can delete events from the Mini Feed after they appear so that they are no longer visible to profile visitors. In 2011 Facebook updated the News Feed to show top stories and most recent stories in one feed, and the option to highlight stories to make them top stories, as well as to un-highlight stories. In response to users' criticism, Facebook later updated the News Feed to allow users to view recent stories first.
Tag (game)
Tag (also known as it, tip you're it or tig [in regions of Britain], and many other names) is a playground game that involves one or more players chasing other players in an attempt to "tag" or touch them, usually with their hands. There are many variations; most forms have no teams, scores, or equipment. Usually when a person is tagged, the tagger says, "Tag, you're it".
Basic rules
A group of players (two or more) decide who is going to be "it", often using a counting-out game such as eeny, meeny, miny, moe. The player selected to be "it" then chases the others, attempting to get close enough to "tag" one of them (touching them with a hand) while the others try to escape. A tag makes the tagged player "it" - in some variations, the previous "it" is no longer "it" and the game can continue indefinitely while in others, both players remain "it" and the game ends when all players have become "it".
There are many variants which modify the rules for team play, or place restrictions on tagged players' behavior. A simple variation makes tag an elimination game, so those tagged drop out of play. Some variants have a rule preventing a player from tagging the person who has just tagged them (known as "no tags-back", "no returns", or "can't tag your master").
Podcasts:
