In 1957, Braunstein further demonstrated that the rudimentary devices could be used for non-radio communication across a short distance. As noted by Kroemer Braunstein".. had set up a simple optical communications link: Music emerging from a record player was used via suitable electronics to modulate the forward current of a GaAs diode. The emitted light was detected by a PbS diode some distance away. This signal was fed into an audio amplifier, and played back by a loudspeaker. Intercepting the beam stopped the music. We had a great deal of fun playing with this setup." This setup presaged the use of LEDs for optical communication applications.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): The current in radio communication had to go through what type of component?
Ah, so.. unanswerable

Crystal Bowersox, who has Type-I diabetes, fell ill due to diabetic ketoacidosis on the morning of the girls performance night for the top 20 week and was hospitalized. The schedule was rearranged so the boys performed first and she could perform the following night instead; she later revealed that Ken Warwick, the show producer, wanted to disqualify her but she begged to be allowed to stay on the show.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Which contestant had to go to the hospital during the week of the top 20?
Ah, so.. Crystal Bowersox

After graduating from high school, West received a scholarship to attend Chicago's American Academy of Art in 1997 and began taking painting classes, but shortly after transferred to Chicago State University to study English. He soon realized that his busy class schedule was detrimental to his musical work, and at 20 he dropped out of college to pursue his musical dreams. This action greatly displeased his mother, who was also a professor at the university. She later commented, "It was drummed into my head that college is the ticket to a good life... but some career goals don't require college. For Kanye to make an album called College Dropout it was more about having the guts to embrace who you are, rather than following the path society has carved out for you."
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What subject was Kanye West's focus at Chicago State University?
Ah, so..
English