"Typically greater brightness of positive compared to negative polarity displays leads to smaller pupil sizes and, hence, a sharper retinal image and better perception of detail."
Per Piepenbrock C et.al. in 2014, the results of the study are compatible with the hypothesis that the positive polarity advantage is an effect of display luminance.
Normal defecation is initiated by three components
(1) spontaneous phasic contractions of rectum starting during filling.
(2) smooth muscle relaxation of the anal canal with an increased
(3) application of voluntary expulsive force as straining.
Process of Defecation: Research shows that the defecation is a complex, learned process ...
Low contrast modes that rely on colour are not a boon, despite the design trends. Complementary colour contrasts may be perceived as strenuous but overall eye fatigue is reduced and readability improved if the contrast is high!
Themes like "solarized" are quite terrible in most situations.
It was believed that because screen reflections are imaged behind ...
Short answer, no. It is possible to sustain Repetitive Stress Injuries (RSI) from smartphone usage, much like the early traumas of "Blackberry Thumb" and "Nintendonitis", but these will not create permanent deformity of the fingers. As covered in the Snopes article on the phenomenon, the most likely explanation for people posting pictures of their ostensible ...
There are a couple issues that need to be addressed when attempting to answer this question, namely,
Does the use of Emacs cause "Emacs pinky?"
If "Emacs pinky" is a repetitive strain injury (RSI), then is it plausible that Emacs may cause RSI?
First, it is important to note that Emacs is a text editor is used by software developers so this answer should ...
Retina Display is unhealthy, but it's unrelated to the resolution. It's the fact, that it's offered only as glossy display, no matte option.
Queensland University of Technology page on "High gloss computer screens"
This web page contains health and safety considerations for Macintosh
– Apple ‘glass’ or high gloss monitor screens.
Reflections and ...
It seems that using computers in general does not cause carpal tunnel syndrome, regardless of the type of keyboard. Some references:
"Carpal Tunnel Syndrome: The Epidemic That Never Was", Canada's Occupational Health and Safety magazine, September 2001
"Computer use deleted as carpal tunnel syndrome cause", Harvard University Gazette, ...
No, it doesn't. It maintains a better lumbar curvature, but that couldn't be correlated with back pain.
The Balans chair has been introduced with claims that, because of its semi-kneeling position, individuals will experience decreased low-back pain (LBP) as well as improvement in circulation. ... Increased cervical (P = .004) and lumbar muscle EMG ...
Computer Eye Strain: 10 Steps for Relief says, "Choose a display with a dot pitch of .28 mm or smaller."
According to MacBook Air - Technical Specifications (with the help of Display PPI (Pixels Per Inch) Calculator), the 13-Inch MacBook Air's dot pitch is 0.1989 mm (127.68 PPI), smaller than 0.28 mm.