2 Flashcards
Where was the first telephone system established?
New Haven Connecticut
With 21 customers
Jan 28 1878
Who sent the first public messages?
Miss Anne Ellsworth
May 24 1844
What did Thomas Edison do to invent things?
Recruited the best scientists to Menlo New Jersey
To produce a small invention every 10 days
A larger invention every 6 months or so
What did Thomas Edison invent?
The lightbulb and the phonograph
What were the results of Thomas Edison’s inventions?
People could see in the dark
Businesses could use electricity to run machines
More people had access to electricity
What is a Phonograph?
Makes the sound waves slower to hear someone far away
What did George Westinghouse invent?
Inventing the alternating current and the transformer to boost power levels
What were the results of George Westinghouse
Electricity could be produced cheaper
travel longer distances
Power could be brought to more of the country
What is a direct current?
Doesn’t provide a wave your energy source is attached to the contraption
What does a filter on an electric line do?
Makes the waves smaller so your stuff doesn’t blow up
What did Edwin Drake invent?
A drill for oil
Succeeded in 1859
Created the PA Rock Oil Company
How was oil previously made?
Melting whale fat or digging ditches till came up
The drill for oil allowed?
Oil to become important and affordable fuel
What did Lewis Latimer invent?
Improved the light bulb by adding filaments
Wrote the books about the use of electricity?
Who was Lewis Latimer?
A son of an escaped slave
Worked in Thomas Edison’s lab
