How many equations does a physicist write in his lifetime?

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Discussion Overview

The discussion revolves around the question of how many equations a physicist writes in their lifetime, exploring the potential correlation between this number and their contributions to the field of physics. The conversation touches on the implications of counting equations, the relevance of such statistics, and the definition of a physicist.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants question the relevance of counting equations as a measure of a physicist's contribution to the field.
  • One participant suggests that writing more equations might indicate spending more time on physics, but this is challenged by others.
  • Concerns are raised about how to accurately count equations, including whether to include unique equations, derivations, and informal sketches.
  • Another participant argues that the measure of equations is inappropriate and suggests that publication and citation counts are more commonly used metrics, although those too have limitations.
  • The definition of a physicist is debated, with questions about whether it includes those with informal training or those who apply physics in their work without formal credentials.

Areas of Agreement / Disagreement

Participants express differing views on the significance of counting equations and the appropriateness of such a measure. There is no consensus on the relevance of the original question or on how to define a physicist.

Contextual Notes

Limitations include the ambiguity in defining what constitutes an equation, the varying roles of physicists, and the subjective nature of measuring contributions to physics.

arpon
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How many equations does a physicist write in his/her lifetime on average? Is there any approximate statistics on this?
Also how much is this correlated to his/her contribution to physics?
 
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arpon said:
How many equations does a physicist write in his/her lifetime on average? Is there any approximate statistics on this?

No. The APS or AIP, for example, never asked for such a survey question.

So what you are asking for requires complete speculation. Besides, of all the parameters that can be associated with a physicist's career, why would this particular statistics matter?

Zz.
 
ZapperZ said:
Besides, of all the parameters that can be associated with a physicist's career, why would this particular statistics matter?
I thought writing more equations means spending more time on physics.
 
arpon said:
I thought writing more equations means spending more time on physics.

Really? Do you discount a huge population of experimental physicists who often go off to build something rather than spend time "writing more equations"?

And look at a physics paper, for example. Often times, many things are referred to simply by words, but the underlying mathematical form of the physics is there without having to "write more equations." If I said that "we solve this via Gauss's law", did that count as "writing down an equation"?

And besides, how do you count this? Do you count each UNIQUE equations? Do you discount derivation of an equation? Do you discount all the equations that are part of the steps of getting from one place to the next? Do you discount equations that are used to simply define quantities? If I can do a bunch of steps in my head and not have to write it down, did I diminish my "equation count" because I simply skipped a few steps?

Your original premise has no correlation to what you think it should imply. If I were you, I'd be more concern that I am not applying the basic tenets of physics in deriving my conjecture. This is what you are doing.

Zz.
 
arpon said:
I thought writing more equations means spending more time on physics.
About a million.

Now without joking: Counting equations means counting equality signs. But often you sketch situations, omit the equality sign on scratches, or even write more than those which might appear in a final paper. And what about estimations ##\approx##, ##\gtrless## signs or mapping arrows? Isn't the actual work done left or right of these signs?

This hopefully will show you how inappropriate your measure is. The commonly used measure is the number of publications or the number of citations for which rankings exist - as far as I know. But even this is a questionable measure. I don't know where e.g. Andrew Wiles ranks in these statistics, but nevertheless, he is the man who solved a problem more than 350 years old. Or Perelman? Or Galois? There is basically only one important paper from Galois, but it founded an entire theory. And measured by this quite modern method, even Einstein probably wouldn't be very high ranking. And as always in life, the quality weighs heavier than the quantity.
 
The question becomes even more complicated in even defining what a physicist is: is it someone, like a general engineer, who knows physics but is not trained as a physicist? Is it someone who is not professionally -trained but uses physics in their work, like a sound technician, electrician, etc?
 

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