... fibre, which is used to transmit one signal per fibre. This type is mostly used in telephones and cable TV. It has small cores and transmits infrared laser light. The second type, called multi-mode fibre is used to transmit many signals per fibre and can therefore be used in computer networks and local area ... fibre optics work? A real fibre optic cable is made out of glass that is incredibly pure so that light can still make it through no matter what the length of the cable is. This glass is drawn into a very thin strand and is then coated in two layers of plastic. This coating is done...

• Word Count: 4544
• Approx Pages: 18
• Grade Level: High School

... the signal onto a short fiber adds a short amount of propagation delay. By switching the signal onto a long fiber, a long amount of propagation delay is added. The optical roundtable has various length fiber paths that induce various amounts of delay. The optical signal is routed over a particular path in the optical roundtable to add either a short or long amount of delay. Another ... delay method is still under development. It uses a gas and a low-power gating laser to control the signal path through the gas. The signal is then propagated through the gas and by using the gating laser,...

• Word Count: 5577
• Approx Pages: 22
• Has Bibliography

... the time. In most cases it works very well, but sometimes different methods are needed. Forensic scientists can now use a small portable laser to look for fingerprints. The scientists "paints" the scene of crimes with the laser beam. As the laser beam sweeps across doors, walls and furniture, any fingerprints on them g ulow because they are fluorescent. Some atoms in the print absorb ... , and then release it again in a for of a burst of light. All of these tiny flashes combine to make the whole print glow when the laser beam hits it. The technique of laser-sweeping enables large areas t...

• Word Count: 4661
• Approx Pages: 19
• Grade Level: Undergraduate

... the time. In most cases it works very well, but sometimes different methods are needed. Forensic scientists can now use a small portable laser to look for fingerprints. The scientists paint the scene of crimes with the laser beam. As the laser beam sweeps across doors, walls and furniture, any fingerprints on them glow because they are fluorescent. Some atoms in the print absorb ... , and then release it again in a burst of light. All of these tiny flashes combine to make the whole print glow when the laser beam hits it. The technique of laser-sweeping enables large areas to be searched ...

• Word Count: 4359
• Approx Pages: 17
• Grade Level: Undergraduate

... multimedia, and the following sections will highlight those changes in more detail. 3.0 Computer Games Past and Present: The Shift in Multimedia Focus 3.1 Computer Games Based on the Laser Disc Format The advent of laser disc games in the early 1980's introduced a new visually stimulating multimedia environment for gamers to immerse themselves in. Largely appealing to the arcade industry, this medium allowed someone ... for example to be drawn into a 3D world, where they would control a human or alien character through a journey, quest or battle. Industry examples of laser disc games in...

• Word Count: 2528
• Approx Pages: 10
• Grade Level: Undergraduate

... a cylinder. The spherical arm replaces up and down movements along the two axes with a rocking motion of the arm. The spherical arm's work envelope is a partial sphere which has various length radii. The last and most used design is the jointed-arm. The arm has a trunk, shoulder, upper arm, forearm, and wrist. All joints on the arm can rotate, creating six ... nuclear missile attack, hundreds of nuclear battle stations would be put in orbit. When the station detects a missile launch, it move a hollow tube towards the missile. Then the station launches a laser beam that hits the missile ...

• Word Count: 2637
• Approx Pages: 11
• Grade Level: High School