GK
INVENTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Who invented Bifocal Lens?
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Alfred B. Nobel
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Thomas Alva Edison
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Benjamin Franklin
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Rudolf Diesel
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Explanation:
Detailed explanation-1: -Benjamin Franklin, who died 200 years ago, is generally credited with the invention of bifocals. However, serious historians have from time to time produced evidence to suggest that others may have preceded him in the invention.
Detailed explanation-2: -Swim fins (1717) Franklin/Pennsylvania stove (1741) Lightning rod (1750) Flexible catheter (1752) 24-hour, three-wheel clock that was much simpler than other designs of the day (1757) Glass armonica, a simple musical instrument made of spinning glass (1762) Bifocals (1784) More items
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