Tag Archives: Weather

Who invented the umbrella?

When it rains, we may put up an umbrella to help keep the water off.  But actually the umbrella was not invented as protection against rain. The first umbrellas were used as shades against the hot sun.  in fact, the umbrella gets its name from an old Latin word meaning “little shadow.” No one knows …

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How does a barometer work?

A barometer tells us what the weather may be like by measuring changes in air pressure.   A barometer is an instrument that measure the pressure of air. The ocean of air above us pushes down on the earth with a great deal of force.   Just as a scale measures the pressure of your weight, so …

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How does a foghorn work?

The greatest diaphone foghorns are worked by blasts of air. When log closes in, the foghorns begin.  They warn ships of dangerous rocks and shoals.  Perhaps the most familiar kind of foghorn, is the deep, horse bellow of the foghorn called it “diaphone.” Diaphone foghorns are worked by blasts of air, and often sound two-toned …

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