- #1
Apteronotus
- 202
- 0
Could someone explain the equation describing Thermal Noise?
The equation is given by
[tex]
\overline{\left(\delta U\right)^{2}_{kT}} = 4RkT\Delta f
[/tex]
Specifically I don't understand what the [tex]\Delta f[/tex] is. Some online resources describe [tex]\Delta f[/tex] as:
- "frequency bandwidth within which information is sought"
- "bandwidth being considered"
- "bandwidth over which noise is measured"
These descriptions are a bit vague. Could someone explain [tex]\Delta f[/tex] in more detail.
thanks.
The equation is given by
[tex]
\overline{\left(\delta U\right)^{2}_{kT}} = 4RkT\Delta f
[/tex]
Specifically I don't understand what the [tex]\Delta f[/tex] is. Some online resources describe [tex]\Delta f[/tex] as:
- "frequency bandwidth within which information is sought"
- "bandwidth being considered"
- "bandwidth over which noise is measured"
These descriptions are a bit vague. Could someone explain [tex]\Delta f[/tex] in more detail.
thanks.