Why Do CDs Have a Hole in the Middle?

By History of Simple Things

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That small opening might look like a simple design choice, but it plays an important role in how a CD works. In this video, we explore why CDs need a center hole, how the spindle keeps the disc centered, why the hole is exactly 15 millimeters wide, and the surprisingly ordinary object that reportedly helped inspire its size. We’ll also look at how the center hole connects to the CD’s laser-reading system and why this tiny detail became part of a global standard for optical discs. Timestamps: 0:00 – Intro 1:02 – The Hole Is What Lets the Disc Spin 2:17 – Why Not Make the Hole Smaller? 3:41 – The 15-Millimeter Hole Wasn't Completely Random 4:58 – How the Hole Keeps the CD Centered 6:02 – One Small Hole Became a Global Standard 7:14 – Conclusion #CD #CompactDisc #Technology #HistoryOfTechnology #EverydayThings #HowThingsWork #SimpleThings #TechHistory #OpticalDisc

Tags: #HistoryOfEverydayItems, #HowItsMade, #BehindTheProduct, #SimpleThingsExplained, #EverydayInnovations, #ManufacturingProcesses, #FromRawToFinished, #TheMakingOf, #EverydayWonders, #ExploringOrigins, #UncoveringCreation, #TheStoryBehind, #CraftingEssentials, #OriginsOfInnovation, #DiscoveryOfCreation