hour of UNPAID sick time for every 30 hours of work performed by the employee within the. geographic boundaries of the City of Portland. âºAn employee may earn up to 40 hours of sick time per leave year unless allowed more by the. employer. âº An employee may use accrued sick time: ï· To cover all or part of a shift. ï· In increments of one hour, unless a lesser time is allowed by the employer or it is physically.
atmospheric pressure. noun, Meteorology. 1. the pressure exerted by the earth's atmosphere at any given point, being the product of the mass of the atmospheric column of the unit area above the given point and of the gravitational acceleration at the given point.
A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. Pressure tendency can forecast short term changes in the weather.Numerous measurements of air pressure are used within surface weather analysis to help find surface troughs, high pressure systems and frontal boundaries.he mercury barometer's design gives rise to the expression of atmospheric pressure in inches or millimeters or feet (torr): the pressure is quoted as the level of the mercury's height in the vertical column. Typically, atmospheric pressure is measured between 26.5 to 31.5 inches of Hg.