the original the original the original air pressure Air Pressure Diagram Atmospheric Pressure: force exerted by the weight of the air University of Illinois: Atmospheric Pressure Air Pressure Diagram University of Illinois "Atmospheric Pressure" Pressure U of Illinois - Atmospheric Pressure uiuc.edu Atmospheric Pressure http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/fw/prs/def.rxml Air Pressure Diagram Pressure University of Illinois: Atmospheric Pressure Atmospheric Pressure: force exerted by the weight of the air Atmospheric pressure. University of Illinois: Presión atmosférica the original uiuc.edu Air Pressure Diagram