He DISCOVERED penicillin, an antibiotic.
pencillin
Alexander Fleming invented the antibiotic called penicillin.
He didn't INVENT anything, he discovered penicillin.
Robert F Flemming invented the guitar in 1886. Flemming wanted to create an instrument that would make a unique sound.
Standard Time zones.
They didn't invent the microscope they only invented the leses
What did Alexander Graham invent for the deaf?
The mold was growing in one of his experimental bacterial cultures and killing them, ruining the experiment. Others might have thrown it out, he determined what the mold was making that killed bacteria.
Roger Bacon invented the Magnifying Glass in the year 1250
around 1250
He discovered penicillin. Or more commonly known, antibiotics which helps us to heal infections.
1952 b.C.e.