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Questão 25 - 2ª Fase - Dia 4 - IME 2011
Gabarito
QUESTÕES DE 25 E 26
The history of technology is full of breakthroughs in one field that wound up working wonders in a related one. The 300B vacuum tube, introduced by Western Electric in 1937 to amplify telephone signals, found a far more enduring use as a high-fidelity audio amplifier. The atomic clocks first used in the 1960’s by the U.S. military to track Sputnik and later to validate Albert Einstein’s relativity theories are now the basis of Global Positioning System. And of course, the magnetron, invented in the 1920’s at General Electric and used in radars during World War II, later found itself repurposed as the basis for the microwave oven.
According to the text, what is correct to say?
Alternativas
- A
The 300B vacuum tube is used in car engines to amplify the audio communications systems.
- B
The atomic clocks are now applied to a different device than that of its original idealization.
- C
The history of technology has proved that it may wound humans due to its versatility.
- D
The atomic clocks were used to play song tracks in high fidelity quality.
- E
The Global Positioning System was validated by Albert Einstein’s relativity theories.
Gabarito:B
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