Known for hot temperatures, Southern California and the rest of the Southwest United States are undergoing a cold snap that has set records in many areas throughout the region.
Periodogram is the spectrum of a set of time signal usually obtained by fast Fourier transform (FFT). It usually shows frequency as x-axis, and magnit... This page may be out of date.
A urogram is a radiograph, or X-ray image, of the urinary tract, and the process of making one is known as urography. It is used in diagnostic testing for various conditions related to the urinary tract and is also used to follow up on treatment for conditions like kidney stones and cancers of the urinary tract.