An Experiment about Trilateration and 
Correction of Clock Error

-Tasks of the Receiver-

Watch with seconds indicator

Preparation
•	You will need a long tape measure and a watch with seconds indicator. 

Procedure
•	You and the Recorder should measure the distances between each of the three Transmitters.
•	You and the Recorder should choose any position on the field or meadow and place yourselves together on this spot of your choice. Try to choose a spot that is far away from the Transmitters as possible.
•	Signify Transmitter #1 to start walking towards you.
•	Upon his arrival, read the time on your watch (to the second) and tell the Recorder to write it down.
•	Repeat Steps 3 and 4 with Transmitters #2 and #3.