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Polarized sunglasses use a sheet of polarizing material to block horizontally-polarized light and thus reduce glare in such situations. These are most effective with smooth surfaces where specular reflection (thus from light whose angle of incidence is the same as the angle of reflection defined by the angle observed from) is dominant, but even ...
Sunglasses are especially important for children, as their ocular lenses are thought to transmit far more HEV light than adults (lenses "yellow" with age). There has been some speculation that sunglasses actually promote skin cancer. [32] This is due to the eyes being tricked into producing less melanocyte-stimulating hormone in the body.
Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.
Dr. Molly shared information that we all already know, but it was still a good reminder. Overall, it sounds like her focus on exercise and mental health play into the other factors. I also ...
You might want to keep pets inside on April 8. An expert reveals how the eclipse might have an effect on your four-legged family members.
Dogs exhibiting the happy right variety are deemed approachable, while the lefty waggers are not. Number 4: Tail shaking is an acquired skill. Puppies begin to learn the ins and outs of it when ...