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San Diegans received cell phone notifications warning of poor air quality in San Diego
Automatic garage doors stop working
Image: Orange County Home Garage Doors
Some San Diego residents came home to the frustration of an improperly functioning garage door opener. Even worse, it startled some residents to find their garage door wide open after being away all day. In some neighborhoods, and at sporadic times, garage doors grew a mind of their own by either not opening or opening at random intervals.
How do we send signals without wires? What are the benefits of these wireless signals? The drawbacks? Why does a garage door opener only open one door and not the next?
Resources:
Garage door openers stop working in Rancho San Diego
Type
Phenomena
Subject
Physics
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