Beam balance on base with suspended polystyrene ball and adjustable counterweight for demonstrating buoyancy on a body due to atmospheric pressure. At a state of equilibrium a Baroscope is placed in a vacuum bell jar under atmospheric pressure. The air in the bell jar is then evacuated the Styrofoam sphere falls on account of the reduction in lift.
![Baroscope -
for experiments with the vacuum recipient, 1003169 [U21853], Vacuum](/imagelibrary/U21853/U21853_01_Baroscope-for-experiments-with-the-vacuum-recipient.jpg)
![Baroscope -
for experiments with the vacuum recipient, 1003169 [U21853], Vacuum](/thumblibrary/U21853/U21853_01_1200_1200_Baroscope-for-experiments-with-the-vacuum-recipient.jpg)
![Component Vacuum Recipient:
Vacuum Bell Jar, 1020809 [U218511], Vacuum](/thumblibrary/U218511/U218511_01_140_140_Component-Vacuum-Recipient-Vacuum-Bell-Jar.jpg)
![Component Vacuum Recipient:
Vacuum Experiment Plate, 1003166 [U21850], Vacuum](/thumblibrary/U21850/U21850_01_140_140_Component-Vacuum-Recipient-Vacuum-Experiment-Plate.jpg)
![Vacuum Recipient, 1009943 [U8421300], Vacuum](/thumblibrary/U8421300/U8421300_01_140_140_Vacuum-Recipient.jpg)
![Electric Doorbell -
for experiments with the vacuum recipient, 1003170 [U21854], Vacuum](/thumblibrary/U21854/U21854_01_140_140_Electric-Doorbell-for-experiments-with-the-vacuum-recipient.jpg)
![Set of 15 Safety Experiment Leads, 75 cm, 1002843 [U138021], Circuits](/thumblibrary/U138021/U138021_01_140_140_Set-of-15-Safety-Experiment-Leads-75-cm.jpg)
![Vacuum Hose, 8 mm, 1002619 [U10140], Hose, Flow hose](/thumblibrary/U10140/U10140_01_140_140_Vacuum-Hose-8-mm.jpg)
![Magdeburg Hemispheres, 1003208 [U30010], Vacuum](/thumblibrary/U30010/U30010_01_140_140_Magdeburg-Hemispheres.jpg)
![Barrel Foot, 1 kg, 1002834 [U13265], Bases](/thumblibrary/U13265/U13265_01_140_140_Barrel-Foot-1-kg.jpg)
![Rotary-Vane Vacuum Pump, Two-Stage, 1003317 [U34000], Vacuum Pumps](/thumblibrary/U34000/U34000_01_140_140_Rotary-Vane-Vacuum-Pump-Two-Stage.jpg)
![Clamp with Hook, 1002828 [U13252], Clamps](/thumblibrary/U13252/U13252_01_140_140_Clamp-with-Hook.jpg)
![Precision Dynamometer 5 N, 1003106 [U20034], Dynamometers](/thumblibrary/U20034/U20034_01_140_140_Precision-Dynamometer-5-N.jpg)
![Liquid Levels, 1003509 [U58020], Pressure](/thumblibrary/U58020/U58020_01_140_140_Liquid-Levels.jpg)
![Calipers, 150 mm, 1002601 [U10071], Accessory - Measurement of Length](/thumblibrary/U10071/U10071_01_140_140_Calipers-150-mm.jpg)
![Pocket Measuring Tape, 2 m, 1002603 [U10073], Accessory - Measurement of Length](/thumblibrary/U10073/U10073_01_140_140_Pocket-Measuring-Tape-2-m.jpg)
![Tubing, Silicone 6 mm, 1002622 [U10146], Hose, Flow hose](/thumblibrary/U10146/U10146_01_140_140_Tubing-Silicone-6-mm.jpg)
![Universal Clamp, 1002830 [U13255], Clamps](/thumblibrary/U13255/U13255_01_140_140_Universal-Clamp.jpg)
![Pair of Safety Experiment Leads, 75 cm, blue, red, 1017718 [U13816], Experiment Leads and Cables](/thumblibrary/U13816/U13816_01_140_140_Pair-of-Safety-Experiment-Leads-75-cm-blue-red.jpg)
![Density Paradox Set, 1003498 [U45056], Density and Volume](/thumblibrary/U45056/U45056_01_140_140_Density-Paradox-Set.jpg)
![Vibration generator -
for investigating oscillations and resonances, 1000701 [U56001], Oscillations](/thumblibrary/U56001/U56001_01_140_140_Vibration-generator-for-investigating-oscillations-and-resonances.jpg)
![Capillary Tubes Apparatus, 1003510 [U58021], Pressure](/thumblibrary/U58021/U58021_01_140_140_Capillary-Tubes-Apparatus.jpg)
![Vacuum Hose, 10 mm, 1002620 [U10141], Hose, Flow hose](/thumblibrary/U10141/U10141_01_140_140_Vacuum-Hose-10-mm.jpg)