Terms physicists and biologists use differently

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Discussion Overview

The discussion revolves around the differences in terminology used by physicists and biologists, particularly in the context of a presentation aimed at a mixed audience of mathematicians, physicists, and mechanical engineers. Participants share terms that have distinct meanings in the two fields, exploring the cultural and contextual variations in their usage.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • Some participants suggest terms like "translation," "evolution," "decay," and "selection" that have different meanings in biology and physics.
  • Others propose terms such as "free energy," "nucleus," "cell," "plasma," "conjugate," "bifurcation," "degeneracy," and "corona" as examples of differing usage.
  • A participant questions the use of "perturbation" in life sciences, suggesting it likely has a different technical meaning compared to physics.
  • Terms like "solution," "precipitate," "reduction," and "statistical significance" are noted as potentially more relevant to chemistry than biology.
  • Discussion includes humorous references to the term "vector" and its implications in both fields, highlighting the confusion it can cause.
  • Participants note the term "theory" has varying definitions across disciplines, with physics focusing on predictive power and other sciences emphasizing explanatory roles.
  • Additional terms such as "membrane," "kinetics," "weight," "matrix," and "genus" are discussed for their differing meanings in biology and physics contexts.

Areas of Agreement / Disagreement

Participants generally agree on the existence of differing terminologies between the fields, but multiple competing views and interpretations remain regarding specific terms and their implications.

Contextual Notes

Some terms may have nuanced meanings that depend on specific contexts or sub-disciplines, and the discussion does not resolve all ambiguities or definitions.

Ryan_m_b
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I'm giving a presentation to a group next week made up of mathematicians, physicists and mechanical engineers. My talk is going to be related to my work so it's going to be very biology based. I want to start the talk pointing out that life science and the physical sciences are very different in their cultures and I thought it would be fun to have a slide with terms both use but completely differently. The point of this is to lead on to saying that if at any point I'm using a term that you know but don't see how it fits then feel free to ask.

Examples I have so far are vector, plasma and differentiate, can anyone think of any others?
 
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How about translation?
 
Evolution (of a physical system versus a species); decay; selection
 
Cthugha said:
How about translation?


That's a good one, thanks

Nugatory said:
Evolution (of a physical system versus a species); decay; selection

Maybe, I'm leaning more towards ones that won't be obvious or well known if possible. The vector example I got from a lecture recently in which a class of mechanical engineering students hadn't heard of a disease vector before.
 
free energy

edit: that was a joke, referencing pseudo-science, but I immediately realized that physicists also use free energy in thermodynamics.
 
nucleus
cell
filament
plasma
conjugate
bifurcation
degeneracy
corona
 
Last edited:
Is "perturbation" used in life sciences in some technical sense?? If it is, I'm sure it means something else than within physics/maths.

As a general strategy here,I would suggest that you should look at semi-colloquial Greek/Latin loan words that are used in a technical sense, and compare actual technical usages to discover subtle differences in implied meaning.
 
flux: http://en.wikipedia.org/wiki/Flux_(disambiguation)
fusion/fission?
[STRIKE]plasma[/STRIKE]*
vertex http://en.wikipedia.org/wiki/Vertex
[STRIKE]vector[/STRIKE]*
proteus http://en.wikipedia.org/wiki/Proteus_(disambiguation)
torus
panda http://en.wikipedia.org/wiki/PANDA_experiment
matrix
anything else I missed:
https://www.google.com/search?q=dis...iology&rls=org.mozilla:en-US:official&start=0
ed-
radiation (evolutionary)
parabola http://en.wikipedia.org/wiki/Parabola_(disambiguation)
*finally decided to really read the op...
 
Last edited:
  • #10
gaussian and normal
 
  • #11
Real
Imaginary
Complex
Manifold (this one has the nice property of being different for mathmatics, ME, and general use)
 
  • #13
These probably apply more to chemistry than biology, but: solution, precipitate, reduction.

Also, statistical significance.
 
  • #14
"Proof"

:biggrin:
 
  • #15
Population
 
  • #16
Ryan_m_b said:
The vector example I got from a lecture recently in which a class of mechanical engineering students hadn't heard of a disease vector before.
That reminds me of a joke I saw recently:

Q. What do you get when you cross a mountain-climber with a mosquito?

A. Nothing: you can't cross a scalar with a vector.​

I had to look up the biological meaning of "vector" before I understood the joke.
 
  • #17
DrGreg said:
That reminds me of a joke I saw recently:

Q. What do you get when you cross a mountain-climber with a mosquito?

A. Nothing: you can't cross a scalar with a vector.​

I had to look up the biological meaning of "vector" before I understood the joke.

:smile:

Okay, that has *got* to be Ryan's first slide! Too funny!
 
  • #18
"Theory".

(I don't think there are any universally accepted definitions, but...)

Physics: A piece of mathematics and some correspondence rules that tell us how interpret mathematical results as predictions about results of experiments. (Short version: "Something that makes predictions about results of experiments"). If the predictions are bad, then it's a bad theory, but it's still a theory. If the predictions are very accurate, then it's considered a good theory even if we're not sure that it really explains anything.

In other sciences: Something that explains a fact. (People often say that it's in this sense that the theory of evolution is a theory).

Outside of science:
1. A statement that's believed to be true.
2. A guess.
 
  • #19
These are all great everyone :biggrin: thanks! I probably won't need any more but feel free to keep them coming for interests sake.

DrGreg said:
That reminds me of a joke I saw recently:

Q. What do you get when you cross a mountain-climber with a mosquito?

A. Nothing: you can't cross a scalar with a vector.​

I had to look up the biological meaning of "vector" before I understood the joke.

Haha I am definitely stealing this for once I've explained vector!
 
Last edited:
  • #20
Date.

Biologist: Phoenix dactylifera
Physicist: time stated in terms of the day, month, and year
General public: a romantic rendezvous
 
  • #21
Does that mean I'm unknowingly a biologist? :biggrin:
 
  • #22
Ryan_m_b said:
I'm giving a presentation to a group next week made up of mathematicians, physicists and mechanical engineers. My talk is going to be related to my work so it's going to be very biology based. I want to start the talk pointing out that life science and the physical sciences are very different in their cultures and I thought it would be fun to have a slide with terms both use but completely differently. The point of this is to lead on to saying that if at any point I'm using a term that you know but don't see how it fits then feel free to ask.

Examples I have so far are vector, plasma and differentiate, can anyone think of any others?

Membrane: in biology, almost always refers to cell or organelle membrane, whereas in Physics, the use is broader. In String Theory, "membrane" (or "brane") may have another arcane definition.

Kinetics: In biology, may refer to enzyme kinetics or sometimes "time-kill kinetics" in microbiology. In Physics, used as a singular form to refer to something related to motion.

Weight: Almost always used as a surrogate for mass in Biology. In Physics, has a very specific meaning relating to the gravitational force on a mass.

Matrix: Used to denote the surrounding substance that envelops something else which can be a cell or an analyte (e.g. extracellular matrix, or specimen matrix). In maths and physics, matrix has a whole other meaning.

Genus: You know the taxonomic use of the term. It's used differently in topology (which I think also has applications in physics).

Differentiate: In biology, used to speak of the specialisation of cells. Different from the mathematical meaning. Of course, there can be quite a lot of calculus in biology, as well.
 

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