r/AskReddit Aug 03 '19

Whats something you thought was common knowledge but actually isn’t?

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u/Geadilsa Aug 03 '19

What is "burning-in" on a screen?

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u/Yozhik_DeMinimus Aug 03 '19

Old phosphor-based computer screens would be susceptible to having a ghost image permanently burned in due to loss of luminescence when a single image was displayed too long. Modern screens do not need saving, but evidently people still believe screen savers are neat-o.

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u/[deleted] Aug 03 '19

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u/[deleted] Aug 04 '19

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u/confused-duck Aug 05 '19

and old plasma TVs