Refresh rate
A refresh rate is the number of times a new image is shown on a screen (such as a television or computer monitor) per second. It is measured in hertz (Hz), which is a measurement of frequency. This means that a screen with a refresh rate of 60 Hz will show 60 images per second. The refresh rate is related to another measurement, the frame rate or frames per second (fps). In relation to a screen, the frame rate is how many images a device (such as a computer) is sending to the screen per second to be shown on the screen.