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Refresh facts & stats

7 fact-checked facts about screen refresh and page reloads, each with the reason behind it. 5 more are in today's round and join this page after it closes.

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The basics

A 60 Hz display redraws its image how often?

Answer60 times per second

Hertz means per second, so a 60 Hz screen refreshes 60 times each second.

In many phone apps, which gesture refreshes a feed or list?

AnswerPulling down from the top of the list

Pull-to-refresh became a common touchscreen pattern: drag the list down and release to check for new content.

Going deeper

What is the traditional frame rate of cinema film with sound?

Answer24 frames per second

Sound films standardised on 24 frames per second in the late 1920s, and cinema still widely uses it.

Refresh rate is how often a display redraws. What does frame rate describe?

AnswerHow often the video source produces new frames

A display redraws at its refresh rate, while the computer or video source supplies new frames at its frame rate.

At 120 Hz, about how long is each refresh cycle?

Answer8.3 milliseconds

One second divided by 120 is about 0.0083 seconds, or 8.3 milliseconds per refresh.

Expert level

Analog PAL television, used across much of Europe, ran at how many frames per second?

Answer25

PAL showed 25 frames per second as 50 interlaced fields, matching the 50 Hz mains supply.

Which HTML tag can make a web page reload automatically after a set time?

Answer<meta http-equiv="refresh">

A meta refresh tag with a content value in seconds tells the browser to reload or redirect the page.

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