Note: There will be two sensor teams. One sensor team will use the AccuLab Sonic Probe with the Macintosh computer. The other team will use the IBM EduQuest PSL (Personal Science Laboratory) Sonic Probe with the IBM Laptop computer. At the completion of the Stealth activity, the two probes and their software packages will be compared by the two Stealth Sonic Sensor team. The images below illustrate how to hold the models for testing.
Team Responsibilities:
1. Determine the effective range of the sonic sensor (in metric units).
2. Determine the dimensions of the "cone of sensitivity" for the sonic probe (in degrees and metric units).
3. Learn to use the sonic sensor and its software with no problems.
4. Set up the rules for the testing of all stealth models (both sonic teams work together on this).
5. Design and print out record sheets (data charts for all tests).
6. Test all stealth models according to rules.
7. Record the results of each test.
8. Report the results of all tests and determine the winner(s).
9. Compare and evaluate the sonic probe and its software for accuracy, ease of use, etc.
10. Test angles of reflection of various materials as requested by other teams. An example of an angle testing device is shown below. This device gets covered with the material teams wish to test.
At the left is shown a student made angle testing device covered with black velvet material.
It will need to be recovered many times as requested by the teams.
A protractor is used to measure the angle at which the tester "disappears" from the sonic detector.