Made from hand-blown glass — The earliest barometers were simple glass bulbs with a spout that helped ancient seaman predict storms. Water moving up the spout means low pressure with potentially stormy conditions, while high pressure pushes the water down to the bottom of the spout. This style of barometer is just as effective today, and provides a decorative method for predicting weather via changes in air pressure. — When good weather approaches, the liquid in the ball is pushe (more…)

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