What is a rain gauge?
Q: What is a rain gauge?
A: A rain gauge is an instrument used by meteorologists and hydrologists to measure liquid precipitation (rain) in a certain amount of time. It is usually measured in millimetres and inches.
Q: How does a rain gauge work?
A: A tapering funnel of mercury or polyester of standard dimension allows the rain water to collect in an enclosed bottle or cylinder for subsequent measurement. The gauge is set in open ground with the funnel rim up to 30 cm above the ground surface. Some gauges are calibrated to allow the amount of rainfall to be read directly; with others it must be calculated from the depth of water in the container and the dimensions of the funnel. The second type of rain gauge is the autographic gauge which can be either of the tilting type or the tipping type. The recording chart on an autographic rain gauge is mounted on a drum which is driven by clockwork and typically rotates round a vertical axis once per day. For a tilting-siphon rain gauge, the rainwater in a collector displaces a float so that a marking pen attached to the float makes a continuous trace on paper. The two buckets in a tipping-bucket rain gauge rest on pivot so that when one bucket has received 0.2 (or 0.5 mm) of rain it tips by gravity, empties out, and allows other bucket to start collection during tip, electrical switch closed triggers nearby autographic recorder register each 'tilt' thus giving fairly continuous record precipitation and more sophisticated form even rainfall intensity.
Q: Who introduced Rain Gauge?
A: King Sejong The Great was responsible for introducing Rain Gauge into world useage.
Q: What are some advantages/disadvantages associated with using this instrument?
A: Advantages include its ability to accurately measure liquid precipitation over time as well as its portability which makes it easy for meteorologists and hydrologists to take readings at different locations quickly and efficiently without having to move large equipment around multiple sites like they would have had too before hand . Disadvantages include difficulty choosing appropriate sites due many precipitation events being highly aggregate making accurate readings difficult if not impossible at times .
