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How have the bifocals been improved since they were invented?
It has improved by being more fashioned and letting people see clearly.
How has the first transistor radio been improved since it was invented?
IC chip
Has the x-ray been improved upon since it was invented?
nowadays, it kills people
Has the fire extinguisher been improved since it was invented?
Several times to improve its efficency and safety.
How many people have had a train ride?
millions, perhaps even billions,i am not certain because billions of people have been on earth since trains have been invented.
Has the cell phone improved since it has been invented?
Older phones often didn't have GPS, texting (with keyboards), cameras, data transfer, or internet connections.
In 1914 who invented the steam train?
No one, it had been invented several years earlier.
Since the 18th century technology has been improving to where we are now but will our technology continue to improve forever?
Technology has improved a lot since the 1800's and will continue growing. It is a big world and many new thing are been invented each day.
How many car crashes have there been since cars have been invented?
There have been over millions of car crashes since they were invented
When was the first electric pencil sharpener invented?
Bernard Lassimone, a French mathematician, invented the standard manual pencil sharpener in 1828. In 1847, Therry des Estwaux invented an improved mechanical sharpener.
When was the shoe last invented?
Shoes are constantly being invented and improved upon. Some shoes could have been invented just yesterday or last week for example.
Who invented the art in this World?
No one invented art it has been around since humans have been around
