PIRA 2B35.15 - Measuring Pressure: Mercury Barometer in Tall Bell Jar.

Instructions / Notes:

Photo Shows the Apparatus Used by University of Texas at Austin.

Photo Below Shows the Exhaust Valve in Closed Position to Evacuate the Bell Jar.

Open Exhaust Valve Counterclockwise to allow air back into the Bell Jar.

Last Updated 3/98 - University of Texas at Austin - All Rights Reserved.