CDs (compact discs) simply work by using a laser to read digital information etched onto their surface in minuscule patterns. This information is encoded as a sequence of tiny depressions (called pits) and flat areas (lands) which together represent binary data (basically 1s and 0s). The pits are absolutely minuscule, measuring just a few micrometers in length (1 micrometer = 0.001 millimeters), so you won’t be able to see them with the naked eye. When a fine laser beam scans the disc, the light
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Tech Nuro on Instagram: "A CD stores information in a single continuous spiral made up of microscopic pits and flat areas called lands. These pits are incredibly small—about one-thousandth the width of a human hair. When a CD player shines a laser on the surface, it detects how light reflects differently off pits and lands. These variations are translated into binary code, allowing the player to reconstruct audio, video, or digital files with precision. All rights reserved to the original creato
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Technology Explained ⚙️ on Instagram: "Follow @explaining.tech to learn everything about technology one post at a time 🧠⚙️. Up close, a CD isn’t just shiny plastic — it’s a spiral of billions of microscopic bumps and flat areas, known as pits and lands. A laser reads those patterns, converting light reflections into the digital 1s and 0s that form music, movies, or data. It’s wild how something that looks so simple carries so much invisible precision. #explainingtech #howthingswork #tech
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