Your AI Start on Instagram: "A microscopic examination of a CD shows that its surface is covered with tiny pits and lands, which represent the binary data that the disc stores. These pits and lands reflect light differently, allowing a laser in a CD player or drive to read the pattern as a sequence of zeros and ones. This is how digital information—from music to software—is encoded and retrieved. The precision of these microscopic structures allows CDs to hold large amounts of data in a compact