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
Complete measure Naïvely, we would take the "σ"-algebra on R to be "B" ⊗ "B", the smallest "σ"-algebra containing all measurable "rectangles" "A" × "A" for "A" ∈ "B". While this approach does define a measure space, it has a flaw. Since every singleton set has one-dimensional Lebesgue measure zero, for "any" subset "A" of R. However, suppose that "A" is a non-measurable subset of the real line, such as the Vitali set. Then the "λ"-measure of {0} × "A" is not defined, but and this larger set does have "λ"-measure zero. So, this "two-dimensional Lebesgue measure" as just defined is not