Why your TV remote requires a direct line of sight
In short: Ever wonder why you have to aim your remote at the screen? This video explores the physics of infrared light and the evolution of wireless communication from early prototypes to modern devices.
Most standard remotes use infrared LEDs to transmit coded commands. Because infrared light travels primarily in a straight line, physical obstacles like walls or furniture can easily block the signal from reaching the television's receiver.
The video traces the history of remote control technology and explains why some modern remotes have overcome these limitations to function even when pointed away from the screen. It also provides practical troubleshooting for testing if a remote is transmitting correctly.
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Sources
- Summary by Intellect · source: Why Can’t Your TV Remote Work Through Walls?
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