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Absolute Zero Sphere
TD-8595
P Constant volume sphere with
embedded thermistor
P Measure pressure and temperature
directly using PASCO sensors
P Empirically determine the absolute
zero temperature
Temperature and Pressure data is taken for
three temperature water baths. The experiment
is repeated with a different amount
of gas initially in the sphere. The slopes of
the two graphs reflect the change in the
number of moles of gas, and both graphs
extrapolate to about the same value for
absolute zero.
Ideal Gas Law
TD-8596A
Gas Laws
P Built-in fast-response thermistor
P Large syringe for accurate volume
measurements
P Experimentally determine the Ideal
Gas Law
A low thermal mass thermistor is mounted
within the syringe for real-time measurement
of temperature changes inside the
syringe. Tubing and a quick connect port
allows a Pressure Sensor to be directly connected
to the syringe. As the plunger of the
syringe is depressed, the volume decreases
while pressure and temperature increase. A
mechanical stop is included on the syringe
plunger to allow quick (adiabatic) volume
changes.
Atmospheric Properties
Chamber
ME-6813
P Recreate the conditions
that lead to cloud formation
P Measure changing temperature
and pressure
P Built-in Fast Response Temperature
Probe
Add a small amount of water to the reservoir
at the bottom of the chamber. Then
seal the chamber, and press the rubber
stopper into place on the top of the chamber.
Students add pressure to the chamber
using the included syringe. When the pressure
is high enough, the rubber stopper
will blow out and a cloud will form.
Included for safety is a stopper catcher,
which keeps the stopper contained within
the apparatus.
Directly measure the pressure and
temperature of the gas inside the
syringe as the plunger is pushed.
Pressure/Temperature
Sensor
Graph of
temperature
and pressure
as stopper
blows.
Built-in Fast Response Thermistor measures air
temperature inside the syringe.
Quick decompression, as stopper blows, causes cloud to
form in chamber.
Pressure/Temperature
Sensor
Order Information:
Absolute Zero Sphere .......TD-8595
Required:
PASPORT Interface ........................................ p. 4
Absolute Pressure/Temp
Sensor...........................................PS-2146 p. 5
USB Link
The syringe plunger is quickly compressed and then released.
Temperature and Pressure of the air inside the syringe are
directly measured by the sensor.
Order Information:
Ideal Gas Law Apparatus ....TD-8596A
Required:
PASPORT or ScienceWorkshop
Interface.................................................................... p. 2, 4
Absolute Pressure/Temp
Sensor.................................................PS-2146 p. 5
www.pasco.com/engineering
Order Information:
Atmospheric Properties
Chamber ...................................... ME-6813
Recommended:
Absolute Pressure/Temp
Sensor........................................... PS-2146 p. 5
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