Benjamin Franklin was a prolific inventor. He invented the lightning rod, the Franklin stove, studied electricity, discovered the Gulf Stream, started the first library, and on and on. Among his many other inventions, what musical instrument did he invent?
Benjamin Franklin was a prolific inventor. He invented the lightning rod, the Franklin stove, studied electricity, discovered the Gulf Stream, started the first library, and on and on. Among his many other inventions, what musical instrument did he invent?
What charge card, developed in 1950, was the first to be accepted nationally in the US?
What charge card, developed in 1950, was the first to be accepted nationally in the US?
When was the first elevator built?
When was the first elevator built?
Who invented Electric Generator?
Who invented Electric Generator?
What Elisha Otis invented?
What Elisha Otis invented?
Where was the yo-yo invented?
Where was the yo-yo invented?
Who among the following invented the small pox vaccine?
Who among the following invented the small pox vaccine?
What inspired reflecting road lights to be invented?
What inspired reflecting road lights to be invented?
What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin?
What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin?
Which of the following was first patented by an Australian in 1889?
Which of the following was first patented by an Australian in 1889?
Who is the English physicist responsible for the 'Big Bang Theory'?
Who is the English physicist responsible for the 'Big Bang Theory'?
Which insurance salesman invented the fountain pen in 1884?
Which insurance salesman invented the fountain pen in 1884?
For what does the world owe Almon Strowger a debt of gratitude?
For what does the world owe Almon Strowger a debt of gratitude?
When was the first lawn mower invented?
When was the first lawn mower invented?
What 'game' was first produced by the Southern Novelty Company in Baltimore, Maryland in 1892?
What 'game' was first produced by the Southern Novelty Company in Baltimore, Maryland in 1892?
What Thomas Davenport invented?
What Thomas Davenport invented?
In which decade were the first successful diode and triode vacuum tubes invented?
In which decade were the first successful diode and triode vacuum tubes invented?
When were blue jeans invented?
When were blue jeans invented?
What Enrico Fermi invented?
What Enrico Fermi invented?
In which decade was the telegraph invented?
In which decade was the telegraph invented?