WebApr 15, 2024 · Nanotechnology offers the promise of developing multifunctional materials that will contribute to building and maintaining lighter, safer, smarter, and more efficient vehicles, aircraft, spacecraft, and ships. In addition, nanotechnology offers various means to improve the transportation infrastructure. WebMar 13, 2024 · A bifocal is a lens that has two focal points, usually one portion for viewing distant objects, and another for viewing close objects. A bifocal is also known as a multi-focal lens. Ben Franklin is credited as the inventor of the original bifocal lens. A bifocal lens. Russell Burden / Getty Images Why You Might Need a Bifocal
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Webbifocals (pl.) (plural only) spectacles that have corrective lenses of two different powers; used by people who need both distance and reading glasses; Related words & phrases. bifocal; trifocals; Translations bifocals - spectacles with two different powers. Finnish: kaksiteholasit Navajo: nákʼee sinilí naakijįʼ bee hootʼínígíí Web1 day ago · Two reasons. First, Tax Day can’t be on a weekend, and April 15, 2024, falls on a Saturday. When this occurs, Tax Day gets bumped to the following Monday – except when it doesn't. This brings us to the second reason: April 17 is when Emancipation Day in the District of Columbia is celebrated this year. The holiday marks the date in 1862 ... solvent investopedia
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Webbi· fo· caled ˈbī-ˌfō-kəld : wearing bifocals Balding, bifocaled, a hearing aid in each ear and a pacemaker in his chest … Dolly Langdon, People Weekly, 21 June 1982 … I find myself … WebJul 29, 2024 · Bifocals are two lenses in one. Bifocal lenses have different powers for upper (for distant vision) and lower (for near vision) segments. History of Bifocal Lens:-The American Statesman and inventor Benjamin Franklin first invented the bifocal lenses, most likely in 1760s or early 1770s. WebDec 23, 2024 · Most eyeglasses are designed to optimize distance vision — usually defined as 20 feet away and beyond. Most bifocals and reading glasses are designed to give focused vision — about 14 inches from the eye. A computer monitor sits farther away than where your bifocal can focus but is too close for distance correction. solvent leather