Education Blog

inkjet cartridges

admin — Fri, 09 May 2008 06:29:14 +0000

Many consumers opt to have their inkjet cartridges refilled or purchased remanufactured cartridges from third parties to save money over buying new inkjet cartridges. This is much cheaper (as you need only buy the ink and some other small raw materials), and a whole industry has grown up around this idea. The legality of this industry was brought to the United States Court of Appeals for the Sixth Circuit in the case of Lexmark Int’l v. Static Control Components. The Court ruled that reverse-engineering the handshaking procedure to enable compatibility did not violate the Digital Millennium Copyright Act.

http://www.printedproducts.co.uk/products.php?cat=229

Automotive fuel

admin — Sun, 04 May 2008 17:11:21 +0000

Automotive fuel

In times of scarce petroleum, automobiles and even buses have been converted to burn wood gas (gas mixture containing primarily carbon monoxide) released by burning charcoal or wood in a wood gas generator. In occupied France during World War II, wood and wood charcoal production for such vehicles (called gazogènes) increased from pre-war figures of approximately fifty thousand tons a year to almost half a million tons in 1943.^[5]

[edit] Purification/Filtration

Pencils

admin — Sun, 04 May 2008 17:09:10 +0000

Electromagnetic (EM) radiation

admin — Fri, 02 May 2008 14:09:11 +0000

Electromagnetic (EM) radiation, is a self-propagating wave disturbance in space which is the phenomenon perceived by the human eye as light. EM radiation has an electric and magnetic field component which oscillate in phase perpendicular to each other and to the direction of energy propagation. Electromagnetic radiation is classified into types according to the frequency of the wave, these types include (in order of increasing frequency): radio waves, microwaves, terahertz radiation, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays. Where radio waves have the longest wavelength and Gamma rays have the shortest

Photograph

admin — Fri, 02 May 2008 13:50:50 +0000

“Photograph” is one of the most famous songs and 1983 single by British hard rock band Def Leppard from their multi-platinum album Pyromania. It was written for the late Marilyn Monroe, as Joe Elliott often stated before playing the song live in concerts. When released as a single later that year, it reached #1 on the Mainstream Rock charts and #12 on Pop Singles. More recently, the song was used in promotional ads for the DVD release of Blades of Glory. Photograph is known for sparking the mainstreams awareness of Glam Metal.

3D computer graphics,

admin — Fri, 02 May 2008 13:48:13 +0000

In 3D computer graphics, the image plane is that plane in the world which is identified with the plane of the monitor. If one makes the analogy of taking a photograph to rendering a 3D image, the surface of the film is the image plane. In this case, the viewing transformation is a projection that maps the world onto the image plane. A rectangular region of this plane, called the viewing window or viewport, maps to the monitor. This establishes the mapping between pixels on the monitor and points (or rather, rays) in the 3D world.

aperture

admin — Fri, 02 May 2008 13:47:02 +0000

In optics, an aperture is a hole or an opening through which light is admitted. More specifically, the aperture of an optical system is the opening that determines the cone angle of a bundle of rays that come to a focus in the image plane. The aperture determines how collimated the admitted rays are, which is of great importance for the appearance at the image plane. If the admitted rays also pass through a lens, highly collimated rays (narrow aperture) will result in sharpness at the image plane, while uncollimated rays (wide aperture) will result in sharpness for rays with the right focal length only. This means that a wide aperture results in an image that is sharp around what the lens is focusing on and blurred otherwise. Obviously, the aperture also determines how many of the incoming rays that are actually admitted and thus how much light that reaches the image plane (the narrower the aperture, the darker the image).

Commonwealth of Australia

admin — Thu, 01 May 2008 14:10:48 +0000

The Commonwealth of Australia is a country in the southern hemisphere comprising the mainland of the world’s smallest continent, the major island of Tasmania, and a number of other islands in the Indian and Pacific Oceans.^N4 The neighbouring countries are Indonesia, East Timor, and Papua New Guinea to the north, the Solomon Islands, Vanuatu, and New Caledonia to the north-east, and New Zealand to the south-east.

A photograph

admin — Thu, 01 May 2008 14:09:44 +0000

A photograph (often shortened to photo) is an image created by light falling on a light-sensitive surface, usually photographic film or an electronic imager such as a CCD or a CMOS chip. Most photographs are created using a camera, which uses a lens to focus the scene’s visible wavelengths of light into a reproduction of what the human eye would see. The process of creating photographs is called photography.

promotional lighters

3D computer graphics,

admin — Thu, 01 May 2008 14:09:07 +0000