1248
Roger Bacon did not invent the magnifying glass. The first recorded use of a magnifying glass was by the ancient Romans around 60 AD. Roger Bacon, a medieval philosopher and scientist, did write about the principles of magnification and lenses in the 13th century.
Roger Bacon did not invent the magnifying glass. Although he wrote about the principles behind magnification through lenses in the 13th century, the magnifying glass as we know it today was more likely developed in the early 1200s by Arabian scholars.
Probable near the year 800.
1992
1040 in 9th century.
1000AD or so.
I think sometime in the 1600's
gunpowder was invented in 1232 in china
1862
China made Gunpowder in 1000 A.D. They actually made it by accident.
what year did Granville T. Woods invent the transmitter
The Greeks did not invent pizza.