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2. Sunglasses - Wikipedia

   en.wikipedia.org/wiki/Sunglasses

   Lenses of various colors can offer sufficient (or insufficient) UV protection. Regarding blue light, the color gives at least a first indication: Blue blocking lenses are commonly yellow or brown, whereas blue or gray lenses cannot offer the necessary blue light protection. However, not every yellow or brown lens blocks sufficient blue light.

3. Persol - Wikipedia

   en.wikipedia.org/wiki/Persol

   Persol is an Italian luxury eyewear brand specializing in the manufacturing of sunglasses and optical frames. It is one of the oldest eyewear companies in the world and is owned by the Luxottica group. The name is derived from the Italian per il sole, meaning "for the sun". Formed in 1917 by Giuseppe Ratti, Persol originally catered to pilots ...

4. Electromagnetic shielding - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_shielding

   Electromagnetic shielding. Electromagnetic shielding cages inside a disassembled mobile phone. In electrical engineering, electromagnetic shielding is the practice of reducing or redirecting the electromagnetic field (EMF) in a space with barriers made of conductive or magnetic materials. It is typically applied to enclosures, for isolating ...

5. Woman shocked by eye cancer diagnosis when eye freckle turns ...

   www.aol.com/news/woman-shocked-eye-cancer...

   The detached retina was caused by a cancerous tumor that had wrapped around Hensley’s optic nerve. She was diagnosed with ocular melanoma that began when the freckle in the back of her eye ...

6. Scutum - Wikipedia

   en.wikipedia.org/wiki/Scutum

   The Roman panoply consists firstly of a shield ( scutum ), the convex surface of which measures 2.5 ft (76 cm) in width and 4 ft (120 cm) in length, the thickness at the rim being a palm's breadth. It is made of two planks glued together, the outer surface being then covered first with canvas and then with calfskin.

7. Lead shielding - Wikipedia

   en.wikipedia.org/wiki/Lead_shielding

   Lead shielding. Lead bricks are commonly used as radiation shielding. Lead shielding refers to the use of lead as a form of radiation protection to shield people or objects from radiation so as to reduce the effective dose. Lead can effectively attenuate certain kinds of radiation because of its high density and high atomic number; principally ...