Distance measurement What are some of the methods used to measure distance? We have talked about Direct measurement with a ruler ferred distances by measuring angles in triangles Distance measurement using the speed of light (light propagation time) GPS methods is related to measuring g propagation time but not directly 02/25/02 12.540Lec0602/25/02 12.540 Lec 06 3 Distance measurement • What are some of the methods used to measure distance? • We have talked about: – Direct measurement with a “ruler” – Inferred distances by measuring angles in triangles – Distance measurement using the speed of light (light propagation time) • GPS methods is related to measuring light propagation time but not directly