Deforest Paves the way
A Drive to Invent
A Drive to Invent
What did De Forest invention open the door to?
What is electronics and computers.
What does amplify mean? Use the context.
It means to boost.
Where was the first radio broadcast?
It took place in New York City.
How did the amplifier help with phone calls?
The amplifier boosted signals.
What does broadcast mean as used in paragraphs 7-8?
It means to:
a. to listen to the radio using earphones
b. to send radio signals through the air
What does ambitious mean?
It means eager to succeed.
After the breakthrough in paragraph 5, what happened?
Voices and music could be sent through the air.
He is Enrico Caruso.
Who was a famous opera singer?
He is Enrico Caruso.
What was De Forest's invention?
His invention was the vacuum tube.
How did the vacuum tube change telephones?
People could make more calls over longer distances.
What gave them the opportunity to create computers and electronics?
De Forest gave the opportunity to...
What did Thomas Edison's invention do to help De Forest?
We can infer that De Forest placed a squiggly piece of wire called a grid in his bulb, but Thomas Edison didn't do this with his experiment.
What happened when De Forest fed a weak signal into a bulb?
The signal became stronger.
What boosted the call the president of AT&T made from New York to San Francisco?
Vacuum boosters made the signals stronger.
What is the main idea (the central idea) of the passage?
The main idea is that Lee De Forest created the vacuum tube that made signals and sound waves stronger.
How do we know that De Forest was bright, energetic and creative?
He was always inventing things to sell and enter in contests.
What did the grid do?
It turned electricity on and off.
How many years go did the January 13,1910 broadcast take place?
It was 112 years ago.
How was the vacuum tube beneficial for people across the nation?
In order to answer this question, you must know what beneficial means.
People could get news and listen to music on radios.
How do radio waves travel?
They travel through the air.
How was De Forest's bulb different than Thomas Edison?
He placed a squiggly piece of wire (called a grid) inside the bulb.
What can you infer about all of the inventions that De Forest had made?
They were not useful.
Which quotation supports the inference that De Forest refused to give up on his goals? Give me the paragraph? Read it
"None of his early inventions were successful. But that didn't discourage him."