Magdeburg Plates
012–07190B
12
Optional Procedure:
You can also include a connection to an Absolute Pressure Sensor to
monitor the pressure inside the chamber as in Figure 4.2.
5
10
15
20
25
30
35
40
45
50
55
60
cc
Pressure Sensor
to
ScienceWorkshop
Computer Interface
E
H
F
Figure 4.2
Optional setup with
ScienceWorkshop and a Pressure Sensor
2.
Fill the plastic cup halfway with hot coffee or very hot tap water.
3.
Measure the temperature of the liquid.
4.
Start recording data if you are monitoring the pressure, and pull a
vacuum with the syringe. Watch the liquid carefully. What do you
observe?
5.
What do you think is happening to the temperature of the liquid?
6.
Loosen the connection to A slowly to release the vacuum, then measure
the temperature of the liquid. A quick release of the vacuum may cause
the hot liquid to splatter.
Hint:
Apply
pressure to the top
plate during the first
few strokes of the
plunger until a
vacuum starts to
form.
