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%ما هو (من)٪ 1 - تعريف
EYEGLASS LENS WITH TWO DISTINCT OPTICAL POWERS
Bifocal; Bifocal lens; Bifocal glasses; Bifocal Lenses; Bifocal Lens
![Bifocals with separate lenses. In this case, the Swedish ethnologist [[Jan-Öjvind Swahn]].](https://commons.wikimedia.org/wiki/Special:FilePath/Jan-Öjvind Swahn vid doktorspromovering 2006-06-02.jpg?width=200 "Bifocals with separate lenses. In this case, the Swedish ethnologist [[Jan-Öjvind Swahn]].")
bifocal
¦ adjective denoting a lens having two parts each with a different focal length, one for distant and one for near vision.
¦ noun (bifocals) a pair of glasses with bifocal lenses.
Bifocal
·add. ·adj Having two foci, as some spectacle lenses.
bifocals
Note: The form 'bifocal' is used as a modifier.
Bifocals are glasses with lenses made in two halves. The top part is for looking at things some distance away, and the bottom part is for reading and looking at things that are close.
Mrs Bierce wears thick bifocal lenses.
N-PLURAL
ويكيبيديا
Bifocals
Bifocals are eyeglasses with two distinct optical powers. Bifocals are commonly prescribed to people with presbyopia who also require a correction for myopia, hyperopia, and/or astigmatism.
أمثلة من مجموعة نصية لـ٪ 1
1. ARTICLE Researchers have developed an electro–optic lens that can shift its focusing power with the flick of a switch and may someday replace bifocal lenses.
2. Soon the distance vision may need some correction and this is what led to the development of bifocal lenses many years ago.
3. Embassy" _ was the site of many of the polymath Franklin‘s scientific experiments including the invention of bifocal glasses and the creation of an ethereal–sounding musical instrument, the glass armonica.
4. I take some comfort from the fact that my generation of women is full of stroppy madams (Madonna, Jerry Hall, Sarah Jessica Parker) who are unlikely to go gently into the bifocal good night.
5. In Kuh‘s words: "No artist ever looked less like his work than this overweight, untidy man with his high bald pate, bifocal spectacles, rumpled suit, and shirt untucked, but when we talked, some of the magic came through.