I don't understand how to get the temperature from this graph?

In summary, the purpose of getting the temperature from a graph is to understand and analyze the relationship between temperature and another variable. To get the temperature from a graph, you need to know the scale, units of measurement, and corresponding data points. If the graph has multiple lines or data points, you can determine the temperature by identifying the specific data point or line representing temperature and reading the corresponding value on the y-axis. If the graph does not have a clear temperature scale, you can estimate the temperature using the slope or trend of the data points or reach out to the source for clarification. The accuracy of determining the exact temperature from a graph depends on the clarity and precision of the temperature scale and data points.
  • #1
MissP.25_5
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This is an experiment on plasma control. A graph of current against voltage is drawn on a semi log paper. From this graph, we can get the electron temperature (measured in eV). The method is shown in this picture, but I don't understand it at all. Can someone please explain it to me?
 

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  • #2
Not my field but looks like they picked two points separated by a factor of 270uA/100uA = 2.7 = e on the vertical scale for convenience... ln(e)=1

Something like that anyway.
 
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FAQ: I don't understand how to get the temperature from this graph?

What is the purpose of getting the temperature from a graph?

The purpose of getting the temperature from a graph is to understand and analyze the relationship between temperature and another variable, such as time or location.

What information do I need to know in order to get the temperature from a graph?

In order to get the temperature from a graph, you need to know the scale of the graph, the units of measurement, and the corresponding data points for temperature.

How do I determine the temperature from a graph with multiple lines or data points?

If the graph has multiple lines or data points, you can determine the temperature by identifying the specific data point or line that represents temperature and reading the corresponding value on the y-axis.

What do I do if the graph does not have a clear temperature scale?

If the graph does not have a clear temperature scale, you can use the slope of the line or the trend of the data points to estimate the temperature. Alternatively, you can reach out to the source of the graph for clarification.

Can I use a graph to accurately determine the exact temperature?

It depends on the accuracy and precision of the graph. If the graph has a clear and accurate temperature scale and data points, you can use it to determine the temperature. However, if the graph has a wide range of temperatures or is not labeled clearly, it may not provide an exact temperature.

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