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9 godz. temu · Types. The imaging mode refers to probe and machine settings that result in specific dimensions of the ultrasound image. Several modes of ultrasound are used in medical imaging: A-mode: Amplitude mode refers to the mode in which the amplitude of the transducer voltage is recorded as a function of two-way travel time of an ultrasound pulse. A single pulse is transmitted through the body and ...
9 godz. temu · The instantaneous distance varies by about ± 2.5 million km or 1.55 million miles as Earth moves from perihelion on ~ January 3rd to aphelion on ~ July 4th. At its average distance, light travels from the Sun's horizon to Earth's horizon in about 8 minutes and 20 seconds, [38] while light from the closest points of the Sun and Earth takes ...
