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 This page may be out of date.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 mammogram is an X-ray of the breasts. A mammogram is an important screening test for breast cancer. Used along with other tests, a mammogram can help detect breast cancer at an early stage when it is most curable.