Your best bet is to use a warm LED or incandescent reading lamp with ebooks, as the readers do not emit light.
Devices such as the kindle fire, samsung tablets, etc, that have LCD screens emit light, but most can be tuned to reduce the blue light spectrum, easing the eyes during times of rest.
Does Kindle e readers emit blue light?
E-readers without a frontlight do not emit any color of light. The lights used to illuminate the Paperwhite and Voyage models are white LEDs, which emit across the entire spectrum (including blue). If you are concerned about exposure to blue light before sleeping, you can turn off the frontlight on these models.
Does E Ink emit blue light?
All smartphone and tablet screens also emit blue light. E Ink and e-paper technology in general relies on reflected, not emitted, light. Blue light from digital devices and the sun transforms vital molecules in the eye’s retina into cell killers, according to optical chemistry research at The University of Toledo.
Does the Nook emit blue light?
But blue light, the wavelength common in smartphones, tablets and LED lighting, is able to disrupt the body clock. The researchers said other e-readers such as the Nook and Kindle Fire produced similar wavelengths of light and would have the same impact.
Can you read Kindle at night?
The Paperwhite version of the Amazon Kindle e-reader has a built-in light that allows you to read content in the dark. That means you don’t have to turn on a light at night and disturb your significant other if you want to relax and read a good book on your Kindle.
Photo in the article by “Max Pixel”