Shot Noise
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OverviewShot noise is a type of electronic noise which originates from the discrete nature of electric charge. Shot noise in electronic circuits consists of random fluctuations in a DC current because current actually consists of a flow of discrete charges (electrons). With very small currents, particularly when measuring on short time scales (thus wider bandwidths), shot noise can be significant. The term also applies to photon counting in optical devices, where shot noise is associated with the particle nature of light (photons). |