Immersive Mulimedia

These terms refer to computer-generated simulation of reality with physical, spatial and visual dimensions. This interactive technology is used by architects, science and engineering researchers, and the arts, entertainment and video games industry.
Virtual reality systems can simulate everything from a walk-through of a building prior to construction to simulations of aircraft flight and three dimensional computer games.
Immersive technologies and virtual reality are powerful and compelling computer applications by which humans can interface and interact with computer generated environments in a way that mimics real life sense engagement.
Although mostly known for its application in the entertainment industry the real promise lies in such fields as medicine, science, engineering, oil exploration, data visualization and the military to name just a few.
As 3D and immersive technology becomes more integrated and available for a wide range of applications. It l requires well-designed user interfaces and innovative content for the next generation of computer games and integrated technology like mobile devices, distributed web systems and desktop applications.Read more: http://wiki.answers.com/Q/What_is_immersive_multimedia#ixzz1HI0c9Vsa

Five element of multimedia

Multimedia is comprised of several elements including text, graphics, sound, video, and animation.
The K-6 Multimedia kit includes tools and resources for working with each of these elements.
Following are brief explanations of each multimedia element and how they can be used:
Text
Text is perhaps the most fundamental element of any multimedia project. Students can use
applications such as AppleWorks and HyperStudio compose and edit their own text. Text-based
information can also be gathered from resource CDs and the Internet. Applications such as
Photoshop LE can be used to add visual effects to text to create a more appealing presentation.
Graphics
Graphics can be incorporated into a multimedia project in the form of photographs or designs.
Graphic images can be imported from a variety of resources such as the Internet, a digital camera,
a scanner, or resource CDs such as Art Mania 12,000. Original graphic designs can be created with
applications such as HyperStudio, MovieWorks, and Photoshop LE.
Sound
Sound can be added to a multimedia presentation from a variety of sources. Original sounds can be
recorded using a microphone and programs such as HyperStudio, MovieWorks, or SmartSound.
These applications, as well as QuickTime Pro, can also be used to import sounds from an audio CD
or the Internet. Sound resource files that can be used in multimedia projects are also included on
the HyperStudio, MovieWorks, and SmartSound CDs.
Video
Moving images or video can be incorporated into a multimedia project as QuickTime movies.
QuickTime Pro, HyperStudio, and MovieWorks can be used with a camcorder or VCR to create
and edit QuickTime movies. These programs can also import movies from the Internet and from
resource CDs such as The Archives of History. Movies that can depict a 360-degree panorama or a
movable object can also be incorporated into a multimedia project. These virtual reality movies,
often referred to as QuickTime VR movies, can be created with QuickTime VR Authoring Studio
for playback and be incorporated into programs such as HyperStudio, MovieWorks, and
QuickTime Pro.
Animation
Graphics that contain movement are often referred to as animation. Animation files can be
downloaded from the Internet in the form of animated GIF files and viewed with QuickTime Pro,
HyperStudio, and MovieWorks. HyperStudio and MovieWorks can also be used to create and edit
both frame and path animation.

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differences between internet,intranet and extranet

There's one major distinction between an intranet and the Internet: The Internet is an open, public space, while an intranet is designed to be a private space. An intranet may be accessible from the Internet, but as a rule it's protected by a password and accessible only to employees or other authorized users. From within a company, an intranet server may respond much more quickly than a typical Web site. This is because the public Internet is at the mercy of traffic spikes, server breakdowns and other problems that may slow the network. Within a company, however, users have much more bandwidth and network hardware may be more reliable. This makes it easier to serve high bandwidth content, such as audio and video, over an intranet. (unless you work for the United States Marine Corps. Then you don't get to watch video's. And they Block 80% of any kind of "fun" or entertaining website available on the Internet) The Extranet is a portion of an organization's Intranet that is made accessible to authorized outside users without full access to an entire organization's intranet.

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network topology

In computer networking, topology refers to the layout of connected devices.
Network topology is defined as the interconnection of the various elements (links, nodes, etc.) of a computer network.[1][2] Network Topologies can be physical or logical. Physical Topology means the physical design of a network including the devices, location and cable installation. Logical topology refers to the fact that how data actually transfers in a network as opposed to its physical design.
Topology can be considered as a virtual shape or structure of a network. This shape actually does not correspond to the actual physical design of the devices on the computer network. The computers on the home network can be arranged in a circle shape but it does not necessarily mean that it presents a ring topology.
Any particular network topology is determined only by the graphical mapping of the configuration of physical and/or logical connections between nodes. The study of network topology uses graph theory. Distances between nodes, physical interconnections, transmission rates, and/or signal types may differ in two networks and yet their topologies may be identical.
A Local Area Network (LAN) is one example of a network that exhibits both a physical topology and a logical topology. Any given node in the LAN has one or more links to one or more nodes in the network and the mapping of these links and nodes in a graph results in a geometrical shape that may be used to describe the physical topology of the network. Likewise, the mapping of the data flow between the nodes in the network determines the logical topology of the network. The physical and logical topologies may or may not be identical in any particular network.