Over the last decade, in the world of cryogenic high precision measurements, capacitive sensors have proven to be particularly useful for measuring very small motions. But little academic literature exists on how to implement and utilize this powerful technology. NASA scientists working on the Satellite Test of Equivalence Principle (STEP) spacecraft need to measure extremely small distances at cryogenic temperature. This book presents an innovative approach for the same by using a pendulum between two capacitive plates. The test-bed is used to test the spacecraft payload that contains many...