The radio
I chose to talk about the radio because it was an important aspect of the American History, especially during the Great depression. The radio gave people an escape from the world they lived in. When times were getting bad and they needed something to cheer them up, they could just tune in to their favorite station. The radio was so great and could entertain such a wide audience, and almost anyone could afford a radio. This made it a great bang for your buck. It offered endless entertainment, that could be enjoyed by anyone.
This topic is interesting to me because I enjoy technology, and I think it is fun to learn about the impact technology has. In today's world technology is everything. People look at you funny if you tell them you don't own a cell phone. It is also interesting because the radio is still a big deal today. Car rides would always be awkward silence without the radio. Music can still cheer me up, but I usually listen to it on an iPod instead of a radio.
This topic is interesting to me because I enjoy technology, and I think it is fun to learn about the impact technology has. In today's world technology is everything. People look at you funny if you tell them you don't own a cell phone. It is also interesting because the radio is still a big deal today. Car rides would always be awkward silence without the radio. Music can still cheer me up, but I usually listen to it on an iPod instead of a radio.
In order for a radio to work you need a reciever. Usually crystals are used, but in older radios batteries could have been used. The use of amplitude modulation (AM), with which more than one station can simultaneously send signals (as opposed to spark-gap radio, where one transmitter covers the entire bandwidth of spectra) was pioneered by Fessenden and Lee de Forest. AM was used before FM in radios. AM has longer wavelengths, so the signal can reach much further than FM.