Final answer:
The number of times per second a display redraws its image is known as the refresh rate, measured in Hertz (Hz), directly related to the frequency of the visual signal.
Step-by-step explanation:
The number of times per second a display will draw the image sent to it is called the refresh rate, which characterizes the number of cycles per second in a periodic phenomenon. The unit of measurement for this rate is Hertz (Hz), which is equivalent to one cycle per second. This concept is crucial for screens to display motion smoothly and without flickering. For example, a display with a refresh rate of 60 Hz redraws the image 60 times per second.
The frequency and the period of a waveform, such as those shown on an oscilloscope, are intimately related, with the frequency being the number of successive crests or troughs passing a given point in one second. Understanding frequency helps in adjusting oscilloscopes to visualize both fast-changing and slow-changing signals on the same screen by adjusting the time represented across the screen.The number of times per second a display will draw the image sent to it is known as the frequency. Frequency measures the number of cycles or wave peaks that pass a given point in one second. It is measured in Hertz (Hz), which is equivalent to cycles per second.For example, if a display has a frequency of 60 Hz, it means that it can draw 60 complete images or frames in one second. Higher frequencies result in smoother and more fluid motion on the display, while lower frequencies may cause flickering or lag.