Question regarding System of Units

  • Context: High School 
  • Thread starter Thread starter junior_J
  • Start date Start date
  • Tags Tags
    System Units
Click For Summary

Discussion Overview

The discussion revolves around the differences in systems of units and notation between British and American practices, particularly in the context of education and professional use in physics and engineering. Participants express their views on the use of SI units versus other systems, including Gaussian and imperial units.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • One participant notes the frustration with the lack of a universal system of units and questions why different notations and units persist between British and American practices.
  • Another participant expresses a strong preference for SI units, citing the difficulty of remembering conversion factors for other systems.
  • A question is raised regarding the specific reasons for the preference of certain units and notations over a universal system.
  • One participant argues that Gaussian units are easier for calculations, suggesting that while physicists may use them, they teach SI units for educational purposes.
  • A later reply critiques the American use of "English" units, suggesting it is an attempt to deflect responsibility for not adopting SI, and contrasts the use of imperial units in aerospace engineering with SI in mechanical engineering.
  • Another participant mentions their comfort in using both systems but indicates a preference for imperial units only in conversational contexts.

Areas of Agreement / Disagreement

Participants express differing opinions on the merits and drawbacks of various unit systems, with no consensus reached on the reasons for the persistence of these differences or the best approach to unit usage.

Contextual Notes

Some participants highlight the educational context and industry practices that influence unit preferences, but the discussion does not resolve the underlying reasons for these choices or the implications of using different systems.

junior_J
Messages
46
Reaction score
0
Im following a British curriculum for high schools ( known as A levels ) . I am reading stuff from this forum and i come across differences in notation used by the British and the Americans ... plus differences in units ... why is this so ? why couldn't u guys settle on one universal system of units , notations etc ... wouldn't it have been much better if u could follow one system ? some follow the American way and some the English ... plus I don't know if americans follow SI or not , but the british certainly don't follow it all the time .
 
Physics news on Phys.org
I really really really dislike anything other than SI. It's very frustating when remembering all those conversion factors.

That said, you've got to learn to use both, so live with it.
 
are there any specific reasons why they would prefer using their own units and notations than use a universal one ?
 
Gaussian units are much easier to use in calculations.
That is why most physicists use them for their own work, but teach SI units for a living.
 
The Yanks call their antequated units system "English" to try and persuade themselves that it's somehow not their fault that they don't use SI.

At university, the main difference between mechanical and aerospace engineering in the first year was that the wingies used imperial units (due to the aerospace industry being predominately US based) and the clankies used SI, because it's sensible.

I find it pretty easy to be conversant in both, although I'll only ever use imperial units in conversational contexts.
 

Similar threads

  • · Replies 17 ·
Replies
17
Views
2K
  • · Replies 6 ·
Replies
6
Views
4K
  • · Replies 3 ·
Replies
3
Views
3K
  • Poll Poll
  • · Replies 142 ·
5
Replies
142
Views
7K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 10 ·
Replies
10
Views
3K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 7 ·
Replies
7
Views
2K