On a beautiful sunny day, people always went out for shopping or hiking with family together. Last night, all TV weather forecasts said “Enjoy the Sunshine, tomorrow.” The streets and parks were crowded with people and kids running everywhere. Suddenly, the sky turned dark and it rained cats and dogs. People screamed and ran liked suffering terrorist attacks. Only the doggy, was enjoying and dancing in the heavy rain.
With thousands of reasons, our earth had been badly polluted. It resulted in El Niño and La Niña interacting. The weather broadcasting on TV or internet, always failed. Tom Hunter said “It may work on some city, but 50% failed in my town.” It is interesting that an old “weather Toy” – Glass Barometer, is now hot again. It can predict more precise weather at your location than the broadcasting.
A weather glass is a small open barometer filled with water. It is a simple instrument designed to indicate the atmospheric pressure rises and falls as the water in its spout falling or rising. It does not provide quantitative measurements of atmospheric pressure. It can simply tell you the atmospheric pressure at your location. When the atmospheric pressure is high, the colored water in the fine curve tube will be lower than the one inside the ball. It means a sunny day at place this grass barometer located. On the other hand, when the colored water position is higher than the one in ball, it means low atmospheric pressure. It tells us that rain is coming soon.
The weather glass was invented in the 16th century, probably by the Dutch nobleman Gheijsbrecht de Donckere. It had also been called a storm glass or a water barometer.
The Pilgrims probably brought the weather glass to America in the 1620s, where it became known as a Cape Cod weather glass, a thunder glass or a thunder bottle. It was a popular tool with fishermen and farmers in the 17th through the 19th centuries because it was simple, inexpensive, and could give a hint of coming weather through its indication of pressure changes.
For more information PLS refer http://rammb.cira.colostate.edu/dev/hillger/pdf/weather_glass.pdf