Materials List: Newton's Law of Cooling

Each student needs:

To share with the entire class:

  • 100 ml beaker
  • large heat-proof bowl, at least 6 cm deep
  • BASIC Stamp activity kit - Serial + USB (Text v.3.0) (includes the HomeWork Board with a built-in BASIC Stamp 2 microcontroller, LEDs, wires, resistors, capacitors, and USB cable; item code 90005 for $40, available at Alternatively, instead of the BASIC Stamp 2 microcontroller and associated probe and circuitry, use an analog [mercury or other] thermometer.
  • Parallax AD592 temperature probe (available at; part #28130 for $16)
  • 100 Ω resistor (available at; part #271-1311 for $1.19 for five resistors)
  • 0.22 μF capacitor (available at; part #445-4730-ND for $0.29)
  • laptop computer with PBasic software to interface with BASIC Stamp via USB cable (obtain free download of software at
  • thermometer, a known one that accurately measures room temperature, for probe calibration
  • hot water, tepid water and ice water, ~1 liter each
  • Thermometer Program (bs2)
  • (optional) projector, to display the temperature probe readings