| Author | Message | ||
     YOUNGJIN CHUN (jini) New member Username: jini Post Number: 1 Registered: 02-2006 |
I want to describe a varying temperature. I mean the increasing temperature from 20 oC to 100oC. How can I describe this? | ||
| Robert G. Nelson (rgnelson) Moderator Username: rgnelson Post Number: 538 Registered: 06-2003 |
Since you haven't said what coordinate controls the variation, or what range the coordinate takes on, I will make something up: If the temperature is 20 at time=t0 and varies linearly in time to a value of 100 at time=t1, then vtemp = 20 + (100-20)*(t-t0)/(t1-t0) will define a varying temperature, as will any arithmetic rearrangement of that expression. Alternatively, you can say vtemp = 20+(100-20)*URAMP(t-t0,t-t1) If the variation is something other than linear, then you write the algebraic expression for the shape you want. |