Created: 12 September 2007 | Watched by: 12 people | Comments: 0 comments

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  Energy Resources: Nuclear power 

  http://www.darvill.clara.net/altenerg/nuclear.htm

  Nuclear power is generated using Uranium, which is a metal mined in various parts of the world. The first large-scale nuclear power station opened at Calder Hall in Cumbria, England, in 1956. Some military ... ships and submarines have nuclear power plants for engines. Nuclear power produces around 11% of the world's energy needs, and produces huge amounts of energy from small amounts of fuel, without the pollution that you'd get from burning fossil fuels. How it works Nuclear power stations work in pretty much the same way as fossil fuel-burning stations, except that a "chain reaction" inside a nuclear reactor makes the heat instead. The reactor uses Uranium rods as fuel, and the heat is generated by nuclear fission . Neutrons smash into the nucleus of the uranium atoms, which split roughly in half and release energy in the form of heat. Carbon dioxide gas is pumped through the reactor to take the heat away, and the hot gas then heats water to make steam. The steam drives turbines which d   [More...] [Less...]

  First added: 27 November 2007, by: David Wiblin  [Report as spam]

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  Tags:  basics, generation, how to, nuclear, plant , power, production   [More...] [Less...]

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  Writing serious Perl: The absolute minimum you need to know 

  http://www.netalive.org/tinkering/serious-perl/

  Abstract Perl's extremely flexible syntax makes it easy to write code that is harder to read and maintain than it could be. This article describes some very basic practices I consider necessary for a ... clear and concise style of writing Perl.   [More...] [Less...]

  First added: 23 September 2007, by: David Wiblin  [Report as spam]

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  Tags:  education, guide, how to, learning, perl , syntax, write, writing   [More...] [Less...]

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  Nanotechnology Basics 

  http://www.nanotech-now.com/basics.htm

  Home > Introduction > Nanotechnology Basics Nanotechnology Basics Last Updated: Thursday, 15-Jun-2006 15:24:19 PDT What is Nanotechnology? Answers differ depending on who you ask, and their background. ... Broadly speaking however, nanotechnology is the act of purposefully manipulating matter at the atomic scale, otherwise known as the "nanoscale." Coined as "nano-technology" in a 1974 paper by Norio Taniguchi at the University of Tokyo, and encompassing a multitude of rapidly emerging technologies, based upon the scaling down of existing technologies to the next level of precision and miniaturization. Taniguchi approached nanotechnology from the 'top-down' standpoint, from the viewpoint of a precision engineer. Foresight Nanotech Institute Founder K. Eric Drexler introduced the term "nanotechnology" to the world in 1986, using it to describe a 'bottom-up' approach. Drexler approaches nanotechnology from the point-of-view of a physicist, and defines the term as "large-scale mechanosynth   [More...] [Less...]

  First added: 17 September 2007, by: David Wiblin  [Report as spam]

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  Tags:  basics, define, definition, help on, how to , nanoscale, nanotechnology, what is   [More...] [Less...]

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  Energy Resources: Solar power 

  http://www.darvill.clara.net/altenerg/solar.htm

  We've used the Sun for drying clothes and food for thousands of years, but only recently have we been able to use it for generating power. The Sun is 150 million kilometres away, and amazingly powerful. ... Just the tiny fraction of the Sun's energy that hits the Earth (around a hundredth of a millionth of a percent) is enough to meet all our power needs many times over. In fact, every minute, enough energy arrives at the Earth to meet our demands for a whole year - if only we could harness it properly. Solar Cells ( really called "photovoltaic" or "photoelectric" cells) that convert light directly into electricity. In a sunny climate, you can get enough power to run a 100W light bulb from just one square metre of solar panel. Solar water heating , where heat from the Sun is used to heat water in glass panels on your roof. This means you don't need to use so much gas or electricity to heat your water at home. Water is pumped through pipes in the panel. The pipes are painted black, so they   [More...] [Less...]

  First added: 27 November 2007, by: David Wiblin  [Report as spam]

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  Tags:  basics, generation, how to, introduction, power , power generation, solar, solar power   [More...] [Less...]

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  AJAX: Getting Started - Mozilla Developer Centre 

  http://developer.mozilla.org/en/docs/AJAX:Getting_Started

  [ edit ] What's AJAX? Ajax stands for Asynchronous JavaScript and XML. In a nutshell, it is the use of the nonstandard XMLHttpRequest object to communicate with server-side scripts. It can send as well ... as receive information in a variety of formats, including XML, HTML, and even text files. Ajax’s most appealing characteristic, however, is its “asynchronous” nature, which means it can do all of this without having to refresh the page. This allows you to update portions of a page based upon user events. The two features in question are that you can: Make requests to the server without reloading the page Parse and work with XML documents [ edit ] Step 1 – say "Please!" or How to Make an HTTP Request In order to make an HTTP request to the server using JavaScript, you need an instance of a class that provides this functionality. Such a class was originally introduced in Internet Explorer as an ActiveX object, called XMLHTTP . Then Mozilla, Safari and other browsers followed, implemen   [More...] [Less...]

  First added: 19 September 2007, by: David Wiblin  [Report as spam]

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  Tags:  ajax, asynchronous, basics, getting started, how to , http, lesson, request, response, tuition   [More...] [Less...]

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  HTMLCenter | Web Development and HTML Blog 

  http://htmlcenter.com/

  The more we rely upon CSS , the larger and more complex stylesheet files become. Planning and organising your stylesheet is essential to creating a lean, manageable website. There are many ways of organising ... CSS code but the following are best practice… Comment your stylesheet Commenting your stylesheet makes it much easier to find the information or the commands you’re looking for. Read the rest of this entry » After my unfortunate adventures with the bandwidth limitations of my Internet connection, I decided to search the Web for some sort of utility that would help me monitor and hopefully limit my downloads and uploads. While I didn’t find anything that would actually limit my downloads and uploads (no utilities that would temporarily disable my Internet connection if I got close to my limits), I did find a really nice utility for monitoring my connection. Read the rest of this entry » AJAX or Asynchronous JavaScript and XML , is an innovative way of using existing technologies to   [More...] [Less...]

  First added: 4 April 2008, by: Jakub Uradnik  [Report as spam]

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  Tags:  css, how to, html, web development, webdesign , design, tips, tips & tricks   [More...] [Less...]

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  100 wonderful photo effects Photoshop tutorials 

  http://www.photoshoproadmap.com/Photoshop-blog/2008/04/01/100-wonderful-photo-effects-photoshop-tutorials/

  How can we define what’s a photo effect? That was my main concern when I started the research to build this list. Despite of this situation, I had one thing clear: the final result had to be quite different ... from the orignal picture and be recognized as a post production photo manipulation. That idea would leave all kind of complex photo retouching and subtle color correction out of the discussion. I’ve already gathered some of those tutorials in my and articles. So, with that idea in mind, I gathered what I consider 100 of the best photo effects Photoshop tutorials available on the web. If you have created a photo effect that you consider should have made it into the list, feel free to post the link in the comments section.   [More...] [Less...]

  First added: 4 April 2008, by: David Wiblin  [Report as spam]

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  Tags:  photoshop, effects, photography, tutorial, help , how to, tips and tricks, photographic   [More...] [Less...]

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  Fedora 8 Server Setup: LAMP, Email, DNS, FTP, ISPConfig (a.k.a. The Perfect Server) | HowtoForge - Linux Howtos and Tutorials 

  http://www.howtoforge.com/fedora-8-server-lamp-email-dns-ftp-ispconfig

  Fedora 8 Server Setup: LAMP, Email, DNS, FTP, ISPConfig (a.k.a. The Perfect Server) Version 1.0 Author: Falko Timme <ft [at] falkotimme [dot] com> Last edited 11/08/2007 This is a detailed description ... about how to set up a Fedora 8 server that offers all services needed by ISPs and hosters: Apache web server (SSL-capable), Postfix mail server with SMTP-AUTH and TLS, BIND DNS server, Proftpd FTP server, MySQL server, Dovecot POP3/IMAP, Quota, Firewall, etc. This tutorial is written for the 32-bit version of Fedora 8, but should apply to the 64-bit version with very little modifications as well. I will use the following software: Web Server: Apache 2.2.6 PHP 5.2.4 Database Server: MySQL 5.0.45 Mail Server: Postfix DNS Server: BIND9 (chrooted) FTP Server: proftpd POP3/IMAP server: Dovecot Webalizer for web site statistics In the end you should have a system that works reliably, and if you like you can install the free webhosting control panel ISPConfig (i.e., ISPConfig runs on it out of t   [More...] [Less...]

  First added: 16 November 2007, by: David Wiblin  [Report as spam]

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  Tags:  apache, fedora, hosting, how to, ideal , lamp, linux, mysql, os, perfect, server, setup, web   [More...] [Less...]