the taking of measurements at a distance from the subject, the measurable evidence of the phenomena under investigation being transmitted by radio signals, the process of telemetering data, transmitting and readings of instruments to a remote location by means of wires, radio waves, or other means, measuring distances by acoustic, optical and radio-electric methods, the branch of science and technology devoted to the process of a) measuring the values of variables, such as pressure, temperature, humidity, blood flow, radiation levels, or sound levels, b) transmitting the results of the measurements by some means to a distant station, and c) interpreting, indicating, displaying, recording, or using the information that is obtained