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The inventor of bifocals is Benjamin Franklin. The word can be separated into two parts to understand better. Bi meaning 2, focal meaning to focus. He wanted to be able to see farther away and also be able to read with out switching glasses.
top half of the lenses are for nearsightedness to see at a distance, the bottom for reading. so when you look down at your book or paper you wont have to switch glasses or carry around 2 pairs
What else can I help you with?
What do progressive bifocals cost?
There are different types of bifocals and different sizes so there are different costs.
Is Benjamin Franklin's invention of the bifocals still being used today?
Yes, many people have bifocals.
What building were the bifocals glasses?
You left them in the car.
What did benjmian Franklin invent in 1900-2010?
bifocals
What did Benjaman Franklin invent for better sight?
The Bifocals
What is the bifocals patent number?
Bifocal lenses as a concept were not patented; there are dozens of patents related to bifocals, bifocal contacts, and processes to make bifocals.
Why are bifocals important?
because bifocals are still used today and without bifocals you would have to have 2 pairs of glasses that's why its Important
Why did Benjamin Franklin make bifocals?
So that he would only have to carry one pair of glasses.
What is a sentence with the word bifocals in it?
Please help me find my bifocals.
What are some changes of bifocals?
bifocals changed in size, shape, and magnification.
What are glasses that can focus at two different lengths called?
Bifocals.
What did benjamen invent?
* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals
What is a sentence using the word bifocals?
The bifocals he bought were used. The lower lenses on my bifocals allow me to read more easily.
How many syllables does bifocals have?
The word bifocals has three syllables. (bi-fo-cals)
What do progressive bifocals cost?
There are different types of bifocals and different sizes so there are different costs.
Has the bifocals saved lives?
The bifocals haved saved lives by letting people see clearly.
Is it a bad idea to play golf wearing bifocals?
It is probably not a bad idea to play golf wearing bifocals but it might make it hard for you to focus on the ball. It could also cause you to have less balance when you are hitting the ball.
