Bifocal
science bifocal
My gran has some bifocal glasses.
Bifocal subjects are vocational subjects. They include Computer Science, Electronics, Scooter Motor Mechanics, Electrical and Civil Mechanics. You can choose a vocational subject in 11th std as as optional subject given that you have the required percentage. Choosing a vocational subject rids the student of two other option subjects like biology, german, sanskrit, geography.
Benjamin Franklin
Benjamin Franklin in America is usually regarded as the inventor of the Bifocal glasses .
Bifocal contacts lenses are a better option..:)
Bifocal is a type of corrective lens. Bifocal lenses are divided into two sections, usually the top for seeing far away objects and the bottom for seeing nearby objects.
It means you are using a bifocal contact lens that has a bifocal power of about +1.25 to +1.50. A high add would have the bifocal power of about +2.50.
Bifocal
Bifocal lenses as a concept were not patented; there are dozens of patents related to bifocals, bifocal contacts, and processes to make bifocals.
Managerial tasks communicate values and build and build culture. Bifocal leaders manage by leading and lead by managing.