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What did been Franklin invent?
A few of the things he improved or invented were: the lightning rod, bi-focals, and also the odometer. DJ PMS and your mom!
What kind of glasses do spies use?
Spy Focals
What did Benjamin Franklin invented?
Among other things: bifocals, the lightening rod, the Franklin stove, and the odometer. Even though he had more, he was very famous. he was a great man. Ben Franklin invented a lot of things. one thing that he invented was the glass harmonica. he also invented the lightning rod and bifocal glasses.Also the fire dep. he taught himself to swim from a book but wanted to be faster so he developed the swim fin. there is the franklin stove there was also a musical instrument with spinning glass to vibrate with your damp fingers think of a glass rim. of course dont forget the lightning rod and bi focals and the idea of ocean currents. Ben Franklin invented a lot of things. one thing that he invented was the glass harmonica. he also invented the lightning rod and bifocal glasses.Also the fire dep. he taught himself to swim from a book but wanted to be faster so he developed the swim fin. there is the franklin stove there was also a musical instrument with spinning glass to vibrate with your damp fingers think of a glass rim. of course dont forget the lightning rod and bi focals and the idea of ocean currents.
What is the name of the glasses which can focus on two lengths at the same time?
They are bifocals good for the one who wants it both in one frame check Eye glassdirect they have great types and collection of it.
Was Benjamin Franklin cross-eyed?
He wore glasses, and indeed invented bi-focals for distant and near vision in one frame of specs. Other Franklin inventions are a lightning rod, the long-arm device once used in stores to pick items of shelves, and a type of stove. we can dismiss the Kite and Key business as an extremely hazardous Myth that never happened. Short out, he could not let go of it fast enough!
What things were invented in 1780?
The year 1780 is given as the year that Ben Franklin invented bi-focal eyeglasses and Gervinus invented the circular saw.
Who invented bi-focal glasses and signed the Declaration of Independence?
Benjamin Franklin
What were some of the examples of inventions made in the colonies of early America?
Some of the innovations of the early colonists still serve us well. The invention of double pointed needles for sewing machines, the establishment of daylight savings time. Benjamin Franklin contributions of the Franklin stove and Bi-focals are still in use today.
What were some of Benjamin Franklin's inventions?
There are many inventions by Benjamin Franklin. These inventions include bifocal glasses, lightning rod, glass harmonica, and a flexible urinary catheter.
What was the type of printing was invented by Bi Sheng in 1041?
Bi Sheng invented movable type printing using clay characters in 1041 in China. This innovation allowed for the easier and faster production of printed materials compared to traditional woodblock printing methods.
Did martin luther invent the printing press?
No! Bi Sheng invented it in between 1041 and 1048.
Who is the inventor of the Chinese printer?
It is Bi Sheng. He invented the moveable-type printer in mid 12th century.
