By means of an apparatus called a rain-gauge. The simplest form is a funnel measuring exactly 5 or 8 inches across the mouth. The rain falling into this is caught in a bottle and poured into a graduated measuring-glass, which shows to a tiny fraction of an inch what depth of rainwater has fallen on the gauge since it was last emptied. There are more expensive forms which register the rainfall mechanically on a dial or trace a record on a chart.
I have written a hub on this. There are several types of rain gauges available to record, transmit, and measure rainfall amounts. Most government agencies use a gauge called a "tipping bucket gauge" to automatically record and report rainfall amounts. These machines are very accurate and require little maintenance. Precipitation can also be measure using weather radar but it typically has to be calibrated first.
by NGRIA Bassett23 months ago
Men generalY clean their cars more than they do the House. Is that really true?
by Liz Elias6 years ago
How does a rain gauge work? How can they say "so many inches" of rain?The depth of any liquid in any container is directly related to the width of that container. The narrower the container, the...
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