Blu-Ray Set To Take The World By Storm!
by: Paul Colbert
The Blu-ray Disc belongs to a new generation of optical discs capable of staging high density data. Blu-Ray technology is based on a blue-violet coloured laser. The blue laser operates at a wave length of 405 nm, while older technology such as DVDs and CDs are based on red and infrared lasers that works at 650 and 780 nm. Since the wave length is shorter with a blue laser, the new Blu-ray technology makes is possible to store much more information
The advantage with the Blu-ray technology is that the laser beam can be focused much more tightly at the surface of the disc. Tight focus means that a smaller spot will be produced on the surface on the disc, and when the spots become smaller there will naturally be room for more information on each disc. The minimum spot size of any laser depends on a naturally accruing phenomenon called diffraction. The narrow beam of light sent out from a laser will always diverge into a wider beam eventually, due to the natural diffraction of waves. Diffraction will also occur the waves meet an obstruction. By reducing the wavelength of a laser, we can affect the diffraction.
In Blu-ray technology, the diffractions is also affected by the fact that the lens used to focus the light has a higher numerical aperture than the lenses found in ordinary DVDs - 0.85 instead of 0.6. Blu-ray technology based appliances are also equipped with a dual-lens system of supreme quality, and the cover layer has been made thinner in order to prevent unwanted optical effects. All this makes it possible for a Blu-ray laser to focus on much smaller spots. The optical improvements are accompanied with a new method for encoding data which makes it possible to store even more data on the Blu-ray disc.
The standard for Blu-ray technology has been developed as a joint venture between several major manufacturers of PCs and consumer electronics, including Sony and Philips. The group is called the Blu-ray Disc Association (BDA). The first Blu-ray recorder was launched in Japan in 2003, by Sony. Today, Samsung, JVC, Matsushita (Panasonic) and LG Electronics are all examples of companies using Blu-ray technology in their products. Hewlett Packard has announced that they will release desktop PCs equipped with Blu-ray technology in late 2005.
The main competitor for the Blu-ray technology is the HD DVD format which is also capable of storing more information than a normal DVD. The Blu-ray technology does however allow for more information per layer than the HD DVD format ? 25 GB compared to 15 GB. The Blu-ray technology will on the other hand most likely be more expensive to support, at least initially, which can make the HD DVD a tempting alternative. In a Blu-ray disc, the data is stored extremely close to the surface. This made the first Blu-ray discs extremely vulnerable to scratching and many users preferred the tougher HD DVD discs. Since 2004, all Blu-ray discs are coated with a clear polymer called ?Durabis? which makes them much more durable. According to the developers of Durabis, the TDK Corporation, a coated Blu-ray disc will work even after being attacked with a screwdriver.
About The Author
Paul Colbert of http://www.blu-ray-world.com is an author of various articles relating to new technology and innovations. All content may be used freely but may not be altered in anyway without prior written consent by webcashflow LLC and a link back to Blu-Ray-World.com must be given.
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Tips For Turning CD Duplication Into A Profitable Side Business
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by: Mike Waters
CD duplication has arrived in a big way. Teenagers are using cd burners to rip mp3s from their favorite artists. Companies use cd duplication to make backups of their software and documents. Federal agencies are scrambling to define and interpret intellectual piracy and copyright laws as they relate to cd duplication and the music industry. The movie industry is seeking how they can profit from cd and DVD duplication. With so much attention focused on cd duplication, now is the perfect time to turn your home cd duplication hardware into a very profitable side business.
Believe it or not, you probably already have everything you need to get your cd duplication service business off the ground. All you need is a computer, a cd burner, cd duplication software, and a few blank cdrs to get started. It is really that easy.
If you don?t possess a computer or a cd burner,...
Tips For Turning CD Duplication Into A Profitable Side Business
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You know how to pull wire – how to get the measurements and all that. And the setup of the system is not a problem. That's what 15-year-olds are for. But the actually pulling the wire in from your receiver to the actual speakers could pose a problem. Not that you don't have the skills to do it. You're completely confident with that – you're a man's man. But you need...
Do Your Home Improvement Right With A Good Attic Ladder
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This list of prohibited items should be strictly noted unless it's okay for the seller to be banned from the E-bay listing or his or her account suspended. He or she may even face some criminal charges relative to the violation of the law.
These prohibited items are as follows:
1. School-related software.
This refers to any kind of school-related software that is being sold to students or researchers at marked down amounts.
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Before going further into choosing computers for children, I believe that you would like to know the answer to the following question:
Why do children need computers?
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Blu-Ray Set To Take The World By Storm! Dvd
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