Where do you see them most often?
In general, the balls are roughly 60 meters apart. However, there is one place where you can spot them much more often than that: near an airport. And in that fact lies the biggest hint as to their purpose. According to one of the stories circulating about their invention, the balls were invented in Arkansas. The coastal state of Florida would therefore have nothing to do with it!
Credit: Unsplash, Dongsh
What do you think? What are they for? Continue reading quickly.