Ramón Jardí i Borrás falling. If the rain is heavy enough, it can exceed the device's capacity. At that level, the regulating hole is uncovered, discarding the excess water. If the rain decreases, the buoy drops at the same speed -as the cylindrical reservoir empties. The pluviometer recorded precipitation in Barcelona for 95 years and in places such as Hong-Kong). To measure the average intensity of rainfall in a certain interval of time, the Pluviometer of intensities uses the formula: Intensity varies over time. The pluviometer records instantaneous rain intensity (as its name defines): Ramón Jardí i Borrás Ramon Jardí i Borras (Tivissa, November
Jordan measure finite union and intersection of Jordan measurable sets is Jordan measurable, as well as the set difference of any two Jordan measurable sets. A compact set is not necessarily Jordan measurable. For example, the fat Cantor set is not. Its inner Jordan measure vanishes, since its complement is dense; however, its outer Jordan measure does not vanish, since it cannot be less than (in fact, is equal to) its Lebesgue measure. Also, a bounded open set is not necessarily Jordan measurable. For example, the complement of the fat Cantor set (within the interval) is not. A bounded set is Jordan