You can’t actually see the wind. It’s as invisible as sound waves or thermal energy. Yet wind manifests itself in tangible, sometimes startling ways.
The other day as we walked out on the desert we heard the sound of water swirling down a manhole. Well, that’s what it sounded like. We noticed pebbles tumbling almost at our feet, and bushes trembling and grasses bending — and yet we felt no movement. It was a desert whirlwind, acting upon things we could see.
Clouds speeding across the sky give more evidence of wind, and when we see two levels of clouds traveling in opposing directions we realize that winds aloft can blow from different points of the compass. Other times we watch clouds torn into fragments and strewn across the sky, all done by the wind. (Read the rest …)
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