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In what year did Roger Bacon invent the magnifying glass?
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.
What year did Roger Bacon invent the magnifying glass?
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.
What year did China invent gunpowder?
Probable near the year 800.
What year did Francis Bacon invent the barometer?
1992
What date and year did the Chinese invent gunpowder?
1040 in 9th century.
What year did the Chinese invent the first rockets powered by gunpowder?
1000AD or so.
What year did Francis Bacon invent the scientific method?
I think sometime in the 1600's
What year was gunpowder invented by berthold schwarz?
gunpowder was invented in 1232 in china
What year was gunpowder used in rockets?
1862
What year did china make gunpowder?
China made Gunpowder in 1000 A.D. They actually made it by accident.
What year did granville woods invent the transmitter?
what year did Granville T. Woods invent the transmitter
What year did the Greeks invent pizza?
The Greeks did not invent pizza.
