viernes, 29 de febrero de 2008

Week 7


Hello, everyone! My investigation about the murder case is going pretty well. My chief, math teacher, has asked me about certain information that is necessary for solving this case. Therefore, I'm presenting you here the following information. Of course, I haven't finished solving the case since there isn't enough information to work with, but this research my chief asked me about is going to help my team and I a lot.


1. What is the Newton’s Law of Cooling?
Newton’s Law of Cooling is the difference in temperature between the temperature of an object and the temperature of the environment.


2. What variables in your problem correspond with the variables in the Newton’s Law of Cooling?
The variables in my problem that correspond to the variables in Newton’s Law of Cooling are:

ü Temperature of the Environment
ü Temperature of the Death Body
ü The Constant K
ü Possible Time of Death.

3. According to this Law, at what time approximately the death happened?

For the moment, I cannot answer this question since the investigation hasn’t finished yet, but as soon as I have the time, I’ll let you know.

4. How does the room temperature affect the time of death?
The room temperature affects the time of death because depending on it the change in the death body’s temperature will occur. This is due to the fact that when a person dies, the blood stops circulating, so the body doesn’t produce more heat and the temperature of the body increases o decreases based on the temperature of the environment, the place where it is.


5. How does an illness (e.g. fever) affect the time of death?
An illness affects the time of death because it isn’t going to be easy to calculate it since the forensic investigators won’t know the temperature of the body before it was killed. Also, the results will vary because of this due to the fact that you won’t get the same time of death based with the temperature of a healthy person and with the one of a sick one, which can be higher or lower than the temperature of a healthy person.


6. How exact is the approximation of the Newton’s Law of Cooling for predicting the time of death?
It has been proved that it provides you with a good approximation. However, it isn’t one hundred percent exact since it won’t give you the exact hour, minutes and seconds in which everything happened. Also, there are many factors involved just to get this approximation, so if you have one wrong, the hour will be wrong, too.

Learning Goals
Since the beginning of this project, I have established some learning goals that I want to achieve during its development. These goals are:

-To know how to apply math for solving a murder case.
-To know how to obtain the time of death with the help of Newton’s Law of Cooling.
-To learn more about Forensic Science.
-To know what objects and factors must be taken into consideration to solve a murder case.
-To know what a Forensic Scientist does.


Well, looks like this is it for today since I have to keep thinking on how to solve the case and hope that I did well in my math quiz, which is related with Newton's Law of Cooling. This week passed really fast and I had lots of homework, so I'm pretty tired. I shall go to sleep in order to do all the things I have to do tomorrow because believe it or not, I'm going to have lots of teamworks, so I won't have a chance to rest. Therefore, I leave you for now, but don't worry I'm going to let you know about the progress I make with the case. See you!