- #1
nhrock3
- 403
- 0
there is no rho in 1.6
and E disappeared
??
How they got formula 1.7 from formula 1.6
- Thread starter nhrock3
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Discussion Overview
The discussion revolves around the relationship between two formulas in the context of solid state physics and semiconductors, specifically focusing on the transition from formula 1.6 to formula 1.7. Participants explore the variables involved, such as conductivity (σ) and resistivity (ρ), and their definitions.
Discussion Character
- Exploratory, Technical explanation, Conceptual clarification
Main Points Raised
- Some participants note that there is no ρ in formula 1.6 and question the disappearance of E.
- One participant suggests a potential relationship by proposing σρ=1.
- Another participant emphasizes the need to review electromagnetic theory (EM) to understand the relationship between σ and ρ, indicating that it is a simple relationship.
- A participant provides a mathematical expression relating σ, ρ, and other variables, suggesting a connection between them.
- Another participant prompts others to define σ and ρ to further explore their relationship.
Areas of Agreement / Disagreement
Participants express differing levels of understanding regarding the relationship between the variables, with some asserting gaps in knowledge while others provide mathematical insights. No consensus is reached on the specific relationship or the implications of the formulas.
Contextual Notes
Some participants indicate a lack of clarity regarding the definitions of σ and ρ, which may affect their understanding of the formulas. There are unresolved questions about the assumptions underlying the formulas and the context in which they apply.
Who May Find This Useful
This discussion may be of interest to those studying solid state physics, semiconductors, or related fields, particularly individuals looking to understand the relationships between conductivity and resistivity.
there is no rho in 1.6
and E disappeared
??
- #2
Borek
Mentor
- 29,204
- 4,626
I have not the slightest idea what it is all about, but perhaps σρ=1.
- #3
nhrock3
- 403
- 0
its about solid state physics and semiconductors
and there is no rho in 1.6
and there is no rho in 1.6
- #4
waht
- 1,502
- 4
What work have you done so far to find how σ and ρ are related?
You obviously have gaps in the subject and should review EM before continuing on. It's such a simple relationship.
You obviously have gaps in the subject and should review EM before continuing on. It's such a simple relationship.
- #5
nhrock3
- 403
- 0
[tex]\sigma =\frac{ne^2\tau }{m}[/tex][tex]E =\rho J[/tex]
[tex]\tau=\frac{m}{\rho n e^2}[/tex]
[tex]\tau=\frac{m}{\rho n e^2}[/tex]
Last edited:
- #6
waht
- 1,502
- 4
here is a hint.
What is definition of σ?
What is definition of ρ?
can you find this out please.
What is definition of σ?
What is definition of ρ?
can you find this out please.
- #7
nhrock3
- 403
- 0
thanks :)
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