Encyclopedia > Spectral density

Article Content

Spectral density

In physics, the spectral density, or more correctly the power spectral density of a given bandwidth of electromagnetic radiation is the total power in this bandwidth divided by the specified bandwidth.

Spectral density is usually expressed in watts per hertz (W/Hz).

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

East Marion, New York

... density of 136.8/km² (354.8/mi²). The racial makeup of the town is 95.24% White, 0.93% African American, 0.13% Native American, 0.93% Asian, 0.00% Pacific ...