Asked by: Carola Wevertechnology and computing computer peripherals
How does a CD laser work?
Last Updated: 2nd February, 2020
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Just so, how does a laser read a CD?
The surface of the CD contains one long spiraltrack of data. The CD drive shines a laser at thesurface of the CD and can detect the reflective areas andthe bumps by the amount of laser light they reflect. Thedrive converts the reflections into 1s and 0s to readdigital data from the disc.
Similarly, how data is stored in CD? CD data are stored as a series of tinyindentations known as “pits”, encoded in a spiral trackmolded into the top of the polycarbonate layer. The areas betweenpits are known as “lands”. CD-ROM capacities arenormally expressed with binary prefixes, subtracting the space usedfor error correction data.
Then, which side of a CD is worse to scratch?
Scratches Are Worse on One Sidethan the Other Pits are closer to the label side of a CD, so ascratch or other damage on the label side is morelikely to result in an error than one occurring on the clearside of the disc.
What can I do with old CDs?
- Use an old CD as the template for a perfect circle.
- Cover old CDs with felt and use them as coasters.
- Use old CDs to catch candle drips.
- 4. Make artistic bowls from old CDs.
- Use old CDs as sidewalk or driveway reflectors.
- Use an old CD as the basis for a kids' craft.
- Use old CDs as holiday ornaments.