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 This page may be out of date.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 sonogram of a fetus. A sonogram is used by physicians to observe the growth of a fetus, to calculate their age and due date, and to see the presence of multiple fetuses. It is also used to diagnose internal problems such as pelvic bleeding, and to locate cancerous cells.Ultrasound is used to produce a sonogram.It is also used in industry to measure the purity or uniformity of liquid, to measure the depth of water, and to search for underwater objects such as submarines.t is also used to diagnose internal problems such as pelvic bleeding, and to locate cancerous cells. Ultrasound is used to produce a sonogram. It is also used in industry to measure the purity or uniformity of liquid, to measure the depth of water, and to search for underwater objects such as submarines.