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At airports, the balls are a lot smaller. At the end of the runway, for example, you can see balls hanging approximately 50 centimeters above the ground. This is the same size used elsewhere in the country for high-voltage cables suspended 15 meters high or lower. It’s hard to believe that these cables hang so close to the ground, isn’t it? The balls also have another function at the airports. What do you think that function is?

Credit: Pexels, Soumya Ranjan

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