Information is read as the laser moves over the bumps and the areas that have no bumps, also known as land . The changes in reflectivity are interpreted by a part of the compact disc player known as the detector. It is the job of the detector to convert the information collected by the laser into the music that was originally recorded onto the disc. This invention brought 22 patents to James Russell, who today says he working on an even better system for recording and playing back music.
1. According to the passage, why did James Russell invent the CD?
a. He was tired of turning over his records to hear both sides.
b. He wanted to record more music on a new format.
c. He wanted a purer, more durable sound than he could get from vinyl records.
d. He was interested in getting patents.
e. He wanted to work with lasers.
2. What would happen if the detector on a CD player malfunctioned?
a. The spiral track would not be read properly.
b. The pits and land would look like one unit.
c. The changes in reflectivity would be absorbed back into the laser.
d. The music would play backwards.
e. The information read by the laser would not be converted into music.
3. Paragraph 3, lines 1421, explains all of the following EXCEPT
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