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The screen at your local movie theater is obviously a lot larger than the specialty screens used in home theaters, but they actually have a lot in common. The main difference is perforation. The screens in almost every movie theater have the front left, center, and right speakers behind them, along with a few subwoofers.

After it was introduced in the middle of the last century, the TV set remained basically unchanged for decades.

While there were minor design variations along the way, it wasn't until flat-panel plasma and LCD sets arrived that manufacturers finally gave us a new take on the tired old tube.

Time keeps on slippin' indeed: It's been three decades since the release of the Steve Miller Band's hit-parade masterpiece, Fly Like an Eagle.