9. shot (n.) a consecutive series of pictures that constitutes a unit of action in a film
The vacuum level is determined by the pressure differential between the evacuated volume and the surrounding atmosphere. Several units of measure can be used. Most refer to the height of a column of mercury â usually inches of mercury (in.-Hg) or millimeters of mercury (mm-Hg).
This unit is named after the Scottish engineer, James Watt. For a household appliance, the capacity (expressed in watts) corresponds to the energy needed to operate it. For a vacuum cleaner with a higher suction power, the number of watts will therefore be higher.