Kindle Paperwhite - White on Black?
albertd
Posts: 14,355 Forum Member
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On my iPhone Kindle App, there is the facility available to have white text on a black background. I now have a Paperwhite, but cannot see this capability. Is it not included, or have just not found it?
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Your iPhone does it because it is just an LCD screen and it is backlit. Black background reduces the overall brightness and glare of such a screen.
The way the Kindle works isn't really suited to that inversion.
No, it's front-lit. There's a row of LEDs at the bottom that light the top surface of the display, using some very clever light-channels to make it look even.
It's the difference between holding a torch at the bottom of a piece of paper to light it up, or having the torch behind a translucent piece of paper and shining into your eyes.
Not possible to do what you said on the Paperwhite.
No the paperwhite is front lit. Rather than having lights behind the screen which illuminate the the screen the paperwhite has lights in the case that shine the light on the screen as that way cuts out the eye strain issue (and the issue of it suppressing melatonin that you need to induce sleep).
Athough the reason is less the light than the screen type. A LCD screens pixels can produce any colour and can switch colours in a fraction of a second.
Eink can't do this and actually even after a page refresh you can still see a slight imprint of the previous page if you look really hard. It would have to produce a page of almost solid black apart from the text and when it then changes page it could cause issues with it not being clear to read