Saturday, December 26, 2009

Planet

A planet (from Greek πλανήτης, alternative form of πλάνης "wanderer") is a celestial body that is or was orbiting a star or stellar remnant and is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.[a][1][2]

The term planet is ancient, with ties to history, science, mythology, and religion. The planets were originally seen by many early cultures as divine, or as emissaries of the gods. As scientific knowledge advanced, human perception of the planets changed, incorporating a number of disparate objects. In 2006, the International Astronomical Union officially adopted a resolution defining planets within the Solar System. This definition has been both praised and criticized, and remains disputed by some scientists.

The planets were thought by Ptolemy to orbit the Earth in deferent and epicycle motions. Though the idea that the planets orbited the Sun had been suggested many times, it was not until the 17th century that this view was supported by evidence from the first telescopic astronomical observations, performed by Galileo Galilei. By careful analysis of the observation data, Johannes Kepler found the planets' orbits to be not circular, but elliptical. As observational tools improved, astronomers saw that, like Earth, the planets rotated around tilted axes, and some share such features as ice-caps and seasons. Since the dawn of the Space Age, close observation by probes has found that Earth and the other planets share characteristics such as volcanism, hurricanes, tectonics, and even hydrology. Since 1992, through the discovery of hundreds of planets around other stars, called extrasolar planets, scientists are beginning to understand that planets throughout the Milky Way Galaxy share characteristics in common with our own. As of December 2009, there are 416 known extrasolar planets, ranging from the size of gas giants to that of terrestrial planets.[3]

Planets are generally divided into two main types: large, low-density gas giants, and smaller, rocky terrestrials. Under IAU definitions, there are eight planets in the Solar System. In order from the Sun, they are the four terrestrials, Mercury, Venus, Earth, and Mars, then the four gas giants, Jupiter, Saturn, Uranus, and Neptune. With the exception of Mercury and Venus, all planets are orbited by one or more natural satellites.


From Wikipedia, the free encyclopedia
This article is about the astronomical object. For other uses, see Planet (disambiguation).

http://en.wikipedia.org/wiki/Planet

First specifications Html

The first publicly available description of HTML was a document called HTML Tags, first mentioned on the Internet by Berners-Lee in late 1991.[5][6] It describes 20 elements comprising the initial, relatively simple design of HTML. Except for the hyperlink tag, these were strongly influenced by SGMLguid, an in-house SGML based documentation format at CERN. Thirteen of these elements still exist in HTML 4.[7]

HTML is a text and image formatting language used by web browsers to dynamically format web pages. Many of the text elements are found in the 1988 ISO technical report TR 9537 Techniques for using SGML, which in turn covers the features of early text formatting languages such as that used by the RUNOFF command developed in the early 1960s for the CTSS (Compatible Time-Sharing System) operating system: these formatting commands were derived from the commands used by typesetters to manually format documents. However the SGML concept of generalized markup is based on elements (nested annotated ranges with attributes) rather than merely point effects, and also the separation of structure and processing: HTML has been progressively moved in this direction with CSS.

Berners-Lee considered HTML to be an application of SGML, and it was formally defined as such by the Internet Engineering Task Force (IETF) with the mid-1993 publication of the first proposal for an HTML specification: "Hypertext Markup Language (HTML)" Internet-Draft by Berners-Lee and Dan Connolly, which included an SGML Document Type Definition to define the grammar.[8] The draft expired after six months, but was notable for its acknowledgment of the NCSA Mosaic browser's custom tag for embedding in-line images, reflecting the IETF's philosophy of basing standards on successful prototypes.[9] Similarly, Dave Raggett's competing Internet-Draft, "HTML+ (Hypertext Markup Format)", from late 1993, suggested standardizing already-implemented features like tables and fill-out forms.[10]

After the HTML and HTML+ drafts expired in early 1994, the IETF created an HTML Working Group, which in 1995 completed "HTML 2.0", the first HTML specification intended to be treated as a standard against which future implementations should be based.[9] Published as Request for Comments 1866, HTML 2.0 included ideas from the HTML and HTML+ drafts.[11] The 2.0 designation was intended to distinguish the new edition from previous drafts.[12]

Further development under the auspices of the IETF was stalled by competing interests. Since 1996, the HTML specifications have been maintained, with input from commercial software vendors, by the World Wide Web Consortium (W3C).[13] However, in 2000, HTML also became an international standard (ISO/IEC 15445:2000). The last HTML specification published by the W3C is the HTML 4.01 Recommendation, published in late 1999. Its issues and errors were last acknowledged by errata published in 2001.


By : http://en.wikipedia.org/wiki/Html

History Of Cirebon

Cirebon was part of the Sunda kingdom as stated in the travel records of Prince Bujangga Manik, a Sundanese Hindu monk who visited all the holy Hindu sites in the islands of Java and Bali at the beginning of the 16th century AD. In his lontar manuscripts, which have been saved in the Bodleian Library of Oxford University in England since the 16th century, the borders of the Sunda kingdom in the west are the Sunda Straits and in the east are the Pamali River (present day Brebes River) and the Serayu River in Central Java Province.[1]
Another source proclaiming the fact is a report from Tomé Pires, a European explorer. He reported a Sundanese port of "Cimano". Manuk is a river passing through Cirebon area, though not direct flows through the city. In fact, Manuk River (Ci Manuk) flows through Indramayu.
A major event in Cirebon's colonial history was the massive famine of 1844, apparently triggered by a combination of drought and the shift from subsistence agriculture to cash crops, particularly indigo and sugarcane, that had begun as a result of Dutch colonial policy (see Cultivation System) in the 1830s.[citation needed]


SUMBER : http://en.wikipedia.org/wiki/Cirebon

Thursday, December 24, 2009

Sekelumit tentang RSS

Apa sih RSS? RSS, Akronim dari Really Simple Syndication atau Rich Site Summary, secara singkat bisa dideskripsikan sebagai teknologi penampilan isi sebuah website.
Jika anda gemar melalang buana di dunia maya untuk mencari informasi berita terkini, tetapi tidak punya banyak waktu untuk melakukannya, Anda mungkin akan sangat menikmati layanan yang di tawarkan oleh RSS.
Yang pertama kali merilis RSS adalah Netscape.Versi pertamanya adalah RSS 0.09 yang dibuat untuk mendukung website my.netscape.com saat ini, RSS yang populer digunakan adalah versi 2.0.
website-website penyedia RSS feed sangat mudah dikenali. Website tersebut umumnya menyantumkan icon RSS feed atau XML berwarna orange. malah, bisa jadi website tersebut hanya melampirkan pesan "syndicate this site (XML)"
Meski sebuah feed memiliki tampilan yang sederhana dan tidak begitu indah, tetapi manfaatnya sangat terasa. Yang pasti, saat ini, RSS semakin populer di kalangan para blogger.