Title: Define three time constants.
Course: Principles of Technology II (03153-II) > Section: UNIT 14: TIME CONSTANTS

Definition should include

- T_1/2, which represents the time it takes for 50 percent of the total change to take place
- T_90, which represents the time it takes for 90 percent of the total change to take place
- τ (tau), which represents the time it takes for 63 percent of the total change to take place.

Process/Skill Questions:

- Why would a system approach, but never achieve, a zero value?
- What do the three time constants say about a system?