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#31 | |
I'm not a number!
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Karma: 11496
Join Date: Jul 2011
Location: Quebec City
Device: Kobo Elipsa
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#32 | |
hopeless n00b
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Karma: 19597086
Join Date: Jan 2009
Location: in the middle of nowhere
Device: PW4, PW3, Libra H2O, iPad 10.5, iPad 11, iPad 12.9
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#33 |
I'm not a number!
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Karma: 11496
Join Date: Jul 2011
Location: Quebec City
Device: Kobo Elipsa
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#34 |
hopeless n00b
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Karma: 19597086
Join Date: Jan 2009
Location: in the middle of nowhere
Device: PW4, PW3, Libra H2O, iPad 10.5, iPad 11, iPad 12.9
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#35 | |
I'm not a number!
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Karma: 11496
Join Date: Jul 2011
Location: Quebec City
Device: Kobo Elipsa
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#36 |
Connoisseur
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Karma: 546874
Join Date: Sep 2010
Location: Estonia
Device: Kobo Aura One
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Forma has a flickering PWM backlight so I'll stay away for that reason alone.
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#37 | |
Bibliophagist
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Karma: 169098402
Join Date: Jul 2010
Location: Vancouver
Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos
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Quote:
OTOH, one test found that that using 120 to 840 Hertz modulation rates and RGB LEDs driven by a rectangular wave power source to reduce the effects of the phosphors used in most white light LED light sources, the participants were unable to distinguish between the light generated by the PWM LED source and light generated by LEDs driven by a variable current. Oddly most of the participants who reported they were suffering from the effects of PWM popularized in the media, did so regardless of which method of controlling the LED brightness was in use at the time. An inversion of the placebo effect? Nocebo? I will admit to suffering from some dubiousness about claims about the effects (beneficial or deleterious) of anything for years. One study on the placebo effect found that a sugar pill was as effective as Rizatriptan in treating migraine headaches and one hell of a lot cheaper. |
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#38 |
Connoisseur
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Karma: 546874
Join Date: Sep 2010
Location: Estonia
Device: Kobo Aura One
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1 kHz may be fine but the 240 Hz one on new OLED iPhones is causing problems for many.
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#39 |
Bibliophagist
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Karma: 169098402
Join Date: Jul 2010
Location: Vancouver
Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos
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Other than anecdotal evidence, what is the basis for your statement? Personally, I tend to take such anecdotal complaints cum granis salis. One of my co-workers had to switch phones because she suffered from headaches which she blamed on her iPhone 7's PWM. Oddly enough, she spends much more time looking at the screen of her Dell XPS laptop which does use PWM and has not mentioned suffering from any ill effects.
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#40 |
o saeclum infacetum
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Karma: 234636059
Join Date: Oct 2010
Location: New England
Device: Mini, H2O, Glo HD, Aura One, PW4, PW5
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An attack on another member has been deleted.
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