"CANDLE IN A BOX"
INTERACTIVE LAB EXERCISE
"CANDLE IN A BOX"
INTERACTIVE LAB EXERCISE
Homework Assignment Sheet:
(note: For number 1 on this homework sheet we assume that the student has after-class access to computers with the same software needed to conduct the experiment and analyses during class/lab time.)
1) Produce a 3D Image / Visualization
of Temperature Differences
a) Produce a volume visualization (3D image using T3D) of the temperature differences between the baseline temperatures and the experiment temperatures for every minute (or every other minute if the experiment was 20 to 30 minutes long). In other words, you will need to work with the values from Minute 0 and Minute 1 (the baseline temperatures), values from Minutes 2 through 6 (the experiment temperatures), and values from additional time during the return to equilibrium.b) This is more involved than it might seem, as you must discover how to set up the database in the Noesys software. (Explanatory Note: Apparently only databases with three dimensions can be used to create 3D images in T3D. Even though you will be able to set up dimensional databases, T3D apparently does not recognize or open those files, so you will not be able to create images from them. If you wish to create an image showing temperature changes over time, you will be able to use only the probes in one plane plotted against time. This will produce a 3D image.)
c) How much did the temperature vary after the heat source was turned off? (This refers to Minute 6 and temperature data after Minute 6 in this protocol.)d) If the temperature did not return to the original baseline temperature, or lower, in your experiment, how long would it take for the temperature to return to baseline temperature? The process you use to determine this is called extrapolation. You will try to estimate, or if possible, calculate, an unknown value or value set from known values.
e) An important process used in the Noesys/T3D is interpolation, in which there is production of an image showing gradients between values (or perimeter points in this experiment). What is the definition of interpolation? How does interpolation differ from extrapolation?
2) Produce a Brief Report.
Hand in a brief report on what worked, what did not work, your recommendations for improvements or changes in the experimental design, and your conclusions from the data processing and data analyses.
3) Produce a Standard Lab Report.
Using instructor's direction, produce a more complete, detailed lab report including: experiment objective, materials, methods, data, results from data processing, 2D graphs, 3D graphs/images, discussion, conclusions, and suggestions for experiment variations or for a new experiment.(The following link is to a Web site on how to write a lab report or scientific paper. The Web site was created by Dr. Malcolm Campbell in the Biology Department at Davidson College. When you wish to return to this "Homework" Web page from that site, use your Web browser "back" button.)
http://www.bio.davidson.edu/Biology/Courses/Bio111LabMan/Preface%20C.html )
Last Update: 13 May, 1999
