White noise in range of frequencies [duplicate]

1. What frequency components are in white noise?
2. What is the difference between white noise and white Gaussian noise?
3. Is white noise uniformly distributed?
4. What is white noise in signals?

What frequency components are in white noise?

White noise

The band of signal between 20 and 40Hz contains the same power at the band between 2000 and 2020Hz. It's referred to as white because it's analagous to white light -- where every band of the spectrum shines equally brightly, combining to produce white.

What is the difference between white noise and white Gaussian noise?

Gaussian noise means the probability density function of the noise has a Gaussian distribution, which basically defines the probability of the signal having a certain value. Whereas white noise simply means that the signal power is distributed equally over time.

Is white noise uniformly distributed?

For uniform white noise, the PDF of the amplitudes of the time domain samples is uniform within the specified maximum and minimum levels. In other words, all amplitude values between some limits are equally likely or probable. Thermal noise produced in active components tends to be uniform white in distribution.

What is white noise in signals?

In signal processing, white noise is a random signal having equal intensity at different frequencies, giving it a constant power spectral density.