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2014年
07月06日
17:59 bbbcさん

TED-Ed 082・・What is the World Wide Web?           (World Wide Web とは?)

  • 英語の話題
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朗読速度が母国では標準だが、日本人には早い。 大体知っている内容で理解し易い。 

・・04分・・185wpm  2014/07/06 新出
 
字幕:上の動画は開始後 で英語On/Off。 日本語選択、文字サイズはオプションから。
.        YouTubeは 日本語On/Off。 英語選択。

下記英文はマウスオーバー辞書が使えます。            

The World Wide Web, where you're likely watching this video, is used by millions of people every day for everything from checking the weather, ordering food, and chatting with friends to raising funds, sharing news, or starting revolutions(革命).

We use it from our computers, our phones, even our cars. It's just there, all around us, all the time. But what is it exactly? Well first of all, the World Wide Web is not the Internet, even though the terms are often used interchangeably. The Internet is simply the way computers connect to each other in order to share information.
  (the Internet:通信プロトコル=通信規約により全世界を接続した巨大なコンピューターネットワーク)

When the Internet first emerged, computers actually made direct calls to each other. Today, networks are all around us, so computers can communicate seamlessly. The communication enabled through the Internet has many uses, such as email, file transfer, and conferencing. But the most common use is accessing the World Wide Web.
   (the World Wide Web:インタ-ネット上の文書や映像などの公開・閲覧・伝達システム      
                 the Web や WWW と略記される)

Think of the Web as a bunch of skyscrapers, each representing a web server, a computer always connected to the Internet, specifically designed to store information and share it. When someone starts a website, they are renting a room in this skyscraper, filling it with information and linking that information together in an organized way for others to access. The people who own these skyscrapers and rent space in them are called web hosts, but anyone can set up a web server with the right equipment a bit of know-how.

There's another part to having a website, without which we would be lost in the city with no way of finding what we need. This is the website address, which consists of domain names. Just like with a real life address, a website address lets you get where you want to go.

The information stored in the websites is in web languages, such as HTML and JavaScript. When we find the website we're looking for, our web browser is able to take all the code on the site and turn it into words, graphics, and videos. We don't need to know any special computer languages because the web browser creates a graphic interface for us.
  (HTML:HyperText Markup Language、Web上でリンク文書等に便利な゚ログラミング言語)
  (JavaScript:Web上で動的な指示に便利なプログラミング言語)


So, in a lot of ways, the World Wide Web is a big virtual city where we communicate with each other in web languages, with browsers acting as our translators. And just like no one owns a city, no one owns the Web; it belongs to all of us. Anyone can move in and set up shop.

We might have to pay an Internet service provider to gain access, a hosting company to rent web space, or a registrar to reserve our web address. Like utility companies in a city, these companies provide crucial(極めて重要な) services, but in the end, not even they own the Web. But what really makes the Web so special lies in its very name.

Prior to the Web,we used to consume most information in a linear fashion(直線的に). In a book or newspaper article, each sentence was read from beginning to end, page by page, in a straight line until you reached the end. But that isn't how our brains actually work. Each of our thoughts is linked to other thoughts, memories, and emotions in a loose interconnected network, like a web.

Tim Berners-Lee, the father of the World Wide Web, understood that we needed a way to organize information that mirrored this natural arrangement. And the Web accomplishes this through hyperlinks. By linking several pages within a website or even redirecting you to other websites to expand on information or ideas immediately as you encounter them, hyperlinks allow the Web to operate along the same lines as our thought patterns.
  (Tim Berners-Lee:1955- 英国の計算機科学者、WWWやHTMLの代表的な開発者)

The Web is so much a part of our lives because in content and structure, it reflects both the wider society and our individual minds. And it connects those minds across all boundaries, not only ethnicity(民族性), gender, and age but even time and space.
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