How do optical discs store data?
A) A laser burns tiny pits onto a platter.
B) A magnet aligns iron particles on a platter.
C) Electronic memory records data on chips.
D) A digital spectrometer leaves grooves in a platter.

Question

Quizplus · Accepted Answer

Optical discs store data by using a laser to burn tiny pits onto a reflective platter. The pits and flat spaces between them represent the binary digits of 0 and 1, which can be read by a laser beam and translated back into the original data. This process is called optical storage, and it is used in CD, DVD, and Blu-ray discs, among others.

How Do Optical Discs Store Data