The audion tube,a vacuum tube that improved and amplified wireless signals,was developed in 1906 by
A) Lee DeForest.
B) Thomas Edison.
C) David Sarnoff.
D) Reginald Fessenden.
Correct Answer:
Verified
Q6: The _ deal is how the music
Q7: Which of the following was NOT a
Q8: Some people consider _ the "Father of
Q9: Lee DeForest's major contribution to the history
Q10: Canadian inventor _ developed the liquid barretter
Q12: Immediately after World War I,the U.S.government,concerned that
Q13: Beyond the development of the gramophone,Emile Berliner
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Q15: _ refers to freely downloaded software from
Q16: _ was the first person to send
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