thermal noise (Johnson–Nyquist noise)

URI: https://gptkb.org/entity/thermal_noise_(Johnson–Nyquist_noise)
GPTKB entity
Statements (34)
Predicate Object
gptkbp:instanceOf physical phenomenon
gptkbp:affects signal-to-noise ratio
gptkbp:alsoKnownAs gptkb:Johnson–Nyquist_noise
gptkb:Johnson_noise
gptkbp:causedBy thermal agitation of charge carriers
gptkbp:dependsOn current
frequency (within practical limits)
gptkbp:describedBy gptkb:Nyquist_theorem
gptkbp:discoveredBy gptkb:John_B._Johnson
gptkbp:existsIn all temperatures above absolute zero
gptkbp:form V_rms = sqrt(4kTRB)
gptkbp:frequencySpectrum gptkb:white_noise
gptkbp:hasUnit gptkb:watt
volt
https://www.w3.org/2000/01/rdf-schema#label thermal noise (Johnson–Nyquist noise)
gptkbp:independenceDate applied voltage
gptkbp:namedAfter gptkb:John_B._Johnson
gptkb:Harry_Nyquist
gptkbp:occurredIn electrical conductors
gptkbp:proportion gptkb:temperature
resistance
gptkbp:relatedTo gptkb:shot_noise
electronics
physics
telecommunications
flicker noise
gptkbp:relevantConstant gptkb:Boltzmann_constant
gptkbp:symbol B
R
T
k
gptkbp:theorizedBy gptkb:Harry_Nyquist
gptkbp:bfsParent gptkb:Harry_Nyquist
gptkbp:bfsLayer 5