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Experiments were made with human sunglasses and sports goggles before a pair was developed to fit the shape of a dog's head. [1] They are now produced by the Doggles Company in Diamond Springs, California. [2] Doggles are constructed out of a tinted polycarbonate material for UV protection, with elastic straps to secure them to the dog's head. [3]
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.
For the same reason sunglasses and filters were used by the American Army, especially for aviation, indeed Polaroid glasses were thought to protect aviator from sunlight but also atomic bomb explosions. [8] Cool-Ray was a division of American Optical for the sunglasses. It was the originator of the polarized sunglass as it is known today.
This page was last edited on 7 November 2023, at 09:39 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Conformation in dogs refers solely to the externally visible details of a dog's structure and appearance, as defined in detail by each dog breed's written breed standard. [1] [2] [3] A dog that conforms to most of the items of description in its individual breed standard is said to have good conformation.