There are two primary types of electromagnetic energy. These are either noise or coherent.
Being inherently random, noise exists in various forms across the frequency spectrum, though not consistently with the same amplitude. This variation leads to different categories of noise based on frequency distribution, covering the entire electromagnetic (EM) spectrum.
Two primary types of noise are white noise and pink noise. White noise encompasses a uniform distribution across all frequencies, while pink noise exhibits decreasing power density with increasing frequency.
Two primary types of noise are white noise and pink noise. White noise encompasses a uniform distribution across all frequencies, while pink noise exhibits decreasing power density with increasing frequency.
Thermal agitation, shot noise, phase noise, original charge noise, and quantum fluctuations of the vacuum—microscopic energy fluctuations at the subatomic level—are only a few of the causes of noise in the EM field.
Thermal noise, on the other hand, results from the erratic movement of electrons and can significantly contribute to noise levels in radio astronomy.
Noise is an omnipresent aspect of the universe, as exemplified by the Common Microwave Background (CMB) noise originating from the separation of neutral particles in the vacuum of space, which represents energy.
The quantum fluctuations of the space vacuum are hypothesized to be the source of the original charge noise, a particular sort of noise.