Lesson plan
VCDHD
VCDHD (Versatile Compact Disc High Density) is an optical disc standard, similar to CD or DVD. The technology for VCDHD was invented by Andrei Tropillo . Since the name of the technology is similar to VCD, it's also marketed using the name DVHD (Disc Versatile High Density). The capacity of a VCDHD is 4.7 GB, the same as an average single-layer DVD. According to the official site, the tests at Philips laboratories have proven the discs to be fully compatible with modern DVD players. With use of blue laser technology steadily becoming available now, the capacity may be increased by up to 15 GB. The format's main advantages include: * a better resistance to scratching in comparison to DVDs * a thickness of 0.6 mm (compared to 1.2 mm of a DVD) * extreme elasticity and the resulting resistance to bending * low manufacturing and production costs and time (approximately 2 seconds for a VCDHD, compared to a DVD which is approximately three times that amount) * production defect levels are only about 1% * the format does not require a DVD license to manufacture * It works correctly on most DVD drives Most popular in : Russia, Ukraine and Poland.
Article summary
VCDHD (Versatile Compact Disc High Density) is an optical disc standard, similar to CD or DVD. The technology for VCDHD was invented by Andrei Tropillo . Since the name of the technology is similar to VCD, it's also marketed using the name DVHD (Disc Versatile High Density). The capacity of a VCDHD is 4.7 GB, the same as an average single-layer DVD. According to the official site, the tests at Philips laboratories have proven the discs to be fully compatible with modern DVD players. With use of blue laser technology steadily becoming available now, the capacity may be increased by up to 15 GB. The format's main advantages include: * a better resistance to scratching in comparison to DVDs * a thickness of 0.6 mm (compared to 1.2 mm of a DVD) * extreme elasticity and the resulting resistance to bending * low manufacturing and production costs and time (approximately 2 seconds for a VCDHD, compared to a DVD which is approximately three times that amount) * production defect levels are only about 1% * the format does not require a DVD license to manufacture * It works correctly on most DVD drives Most popular in : Russia, Ukraine and Poland.
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.