Origin of Friction: Atomic/Sub-Atomic Scale

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    Friction Origin
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Discussion Overview

The discussion centers on the origin of friction at the atomic and sub-atomic scale, exploring various mechanisms and models that explain this phenomenon. Participants touch on different types of friction, including static, kinetic, and solid-liquid interactions, while seeking clarity on the fundamental causes of frictional forces.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant asks about the fundamental cause of friction, specifically at the atomic level.
  • Another participant suggests that the question is vague and encourages the original poster to conduct preliminary research to refine their inquiry.
  • A third participant references Tomlinson's model as a specific example related to the origin of friction, noting the complexity of the topic and the existence of multiple mechanisms for different types of friction.
  • There is a suggestion that the direction of the frictional force is a relevant aspect of the discussion, prompting further clarification on the original question.

Areas of Agreement / Disagreement

The discussion does not reach a consensus, as participants express differing views on the clarity of the original question and the complexity of the topic. Multiple competing models and mechanisms for friction are acknowledged, indicating ongoing debate.

Contextual Notes

Participants highlight the need for specificity in questions regarding friction, indicating that assumptions about the nature of friction may vary based on the context (e.g., static vs. kinetic friction). There is an acknowledgment of the complexity involved in understanding friction at different scales.

Chemist@
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What is the origin of friction on the atomic (sub-atomic) scale?
 
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I am just asking what causes friction?
 
Chemist@ said:
What is the origin of friction on the atomic (sub-atomic) scale?
Do you mean:

"Why is the frictional force opposite in direction to the direction of travel?"
 
Here's the Tomlinson's model on the orgin of friction:

http://www.reibungsphysik.tu-berlin.de/fileadmin/fg204/Publikationen/Tomlinson.pdf

Please note that this is a very specific example. Your question is actually rather vague, because not only are there different proposed mechanisms for static and kinetic friction, but there are also different models for solid-liquid friction, liquid-liquid friction, etc. It is why Nugatory suggested that you do a bit of homework on your own first and figure out exactly how to ask your question in a more informed manner.

Zz.
 

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