- #1
skywolf
- 81
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what is the difference between a Cd and a dvd?
i mean microscopically
are the holes smaller? different procces altogether?
i mean microscopically
are the holes smaller? different procces altogether?
The main difference between a CD and DVD is the amount of data they can hold. A CD can hold up to 700 MB of data, while a DVD can hold up to 4.7 GB of data. This is due to the different formats used for storing data on each type of disc.
The microscopic structures of a CD and DVD are very similar, but the main difference is the size and spacing of the pits and lands. In a CD, the pits and lands are larger and closer together, while in a DVD they are smaller and further apart. This allows for more data to be stored on a DVD.
No, a CD player cannot read a DVD. This is because the laser in a CD player is not strong enough to read the smaller and more tightly packed pits and lands on a DVD. However, some DVD players can read both CDs and DVDs.
DVDs have a higher storage capacity than CDs because they use a different format for storing data. While CDs use a single layer of pits and lands, DVDs use multiple layers, allowing for more data to be stored in the same amount of space.
Both CDs and DVDs use a laser to store and retrieve data. The laser reads the pits and lands on the disc, which represent the 0s and 1s of digital data. The laser reflects off the pits and lands differently, allowing the data to be read by a computer or other device.