Wolfram Function Repository
Instant-use add-on functions for the Wolfram Language
Function Repository Resource:
Compute the approximate survival time of a human in cold water
ResourceFunction["ColdWaterSurvivalTime"][temp] estimates the survival time in cold water for a temperature temp. | |
ResourceFunction["ColdWaterSurvivalTime"][temp,prop] gives the property prop. |
| "SurvivalTime" | time a human can survive in cold water of the specified temperature |
| "MetabolicHeat" | heat generated by the body in the cold water |
| "CoolingRate" | body's cooling rate |
| "Plot" | plot of the curve of survival time versus water temperature |
| "PropertyAssociation" | all results as an Association |
| "EnergyUnit" | "Calories" | unit of the result heat ("Kilojoules", "Watts", …) |
| "TimeUnit" | "Minutes" | unit of time in the results |
Get the survival time in cold water at a specific temperature:
| In[1]:= |
| Out[1]= |
The function interprets any unit type of degrees for temperature:
| In[2]:= |
| Out[2]= |
The function used with one argument is similar to the function with two arguments where the second is "SurvivalTime":
| In[3]:= |
| Out[3]= |
| In[4]:= |
| Out[4]= |
If a Quantity is not specified, it is interpreted in "DegreesCelsius":
| In[5]:= |
| Out[5]= |
Obtain the heat generated by the body in water at the specified temperature:
| In[6]:= |
| Out[6]= |
Obtain the body’s cooling rate for a specific temperature:
| In[7]:= |
| Out[7]= |
Use "Plot" to obtain the survival time curve (y axis) for different water temperatures (x axis):
| In[8]:= |
| Out[8]= | ![]() |
Use "PropertyAssociation" to get all the information simultaneously for a specific temperature. Note that the result is given in the same temperature units as the input:
| In[9]:= |
| Out[9]= | ![]() |
Get information using another unit of heat with the option "EnergyUnit":
| In[10]:= |
| Out[10]= |
Choose another unit of time with the "TimeUnit" option:
| In[11]:= |
| Out[11]= |
Change both the unit of energy and the time. The plot and the result use the chosen time unit and a given requested energy unit:
| In[12]:= |
| Out[12]= | ![]() |
Note that even if the temperature unit is not degrees Celsius, the x axis of the graph remains in that unit:
| In[13]:= |
| Out[13]= | ![]() |
If the required property does not contain information about the energy, the "EnergyUnit" option does not influence the output:
| In[14]:= |
| Out[14]= |
This work is licensed under a Creative Commons Attribution 4.0 International License