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What did Benjamin Franklin invent to help people see well?
bifocal glasses
Did Benjamin Franklin invent the ocular device?
No, but he is credited with inventing the first pair of bifocals - prior to that, people needed two sets of spectacles, one for distance, one for reading. Franklin combined them into one.
When did Ben Franklin invent the library?
so you could use it as a ladder to get books and you could sit on it to
Benjamin Franklin became enormaously plpular with the people of what country?
Benjamin Franklin became enormously popular with the people of France.
What did Benjamin Franklin do to help shape American history?
Benjamin Franklin built the library.
What did Benjamin Franklin invent to help people measure distance?
ruler
Did Benjamin Franklin invent the stepladder?
Yes, he did .People believe he designed it, or he discovered it.
What did Benjamin Franklin invent to help people see well?
bifocal glasses
Did Benjamin Franklin invent the ocular device?
No, but he is credited with inventing the first pair of bifocals - prior to that, people needed two sets of spectacles, one for distance, one for reading. Franklin combined them into one.
What object did Benjamin Franklin invent to keep people from being hurt in electric storms?
Lightning rod
When did Ben Franklin invent the library?
so you could use it as a ladder to get books and you could sit on it to
What did Benjamin Fracklin invent in 1862?
Benjamin Franklin is a well known inventor and statesman. He is also one of the few people who is featured on American currency who is not a former President. He did not invent anything in 1862 as he died in 1790.
Who invent the bifocal lens?
Benjamin Franklin is credited with inventing the bifocal lens in the 1780s. He designed the lens to help address his presbyopia, a condition that makes it difficult to focus on close objects as people age.
What people did Benjamin Franklin become enormously popular with the people of?
Benjamin Franklin was huge in France at his time.
What were the challenges for Benjamin Franklin?
people
Benjamin Franklin became enormaously plpular with the people of what country?
Benjamin Franklin became enormously popular with the people of France.
What did Benjamin Franklin do to help shape American history?
Benjamin Franklin built the library.
