Informative Speech Outline: Radio Waves

In chapter 8 of Blown to Bits, the authors explain the history and the regulation of radio and TV broadcasts. When the radio came out, the radio was being used simultaneously by many in the same geographic area and because of this, the signals could not be kept apart. For this reason, the radio act was installed where it limited broadcasting to only those who had a license. The authors stated that when HD was created, more radio stations could be opened because the frequencies could be placed closer and the broadcast would not be interfered.

4. Radio: most common form of wireless transmission, typical of home routers and most wireless devices to use this form. Infared uses low frequency light waves to carry data using line-of-sight.

The power emitted from wireless devices, especially in unlicensed bands, such as 2.4 GHz and 5 GHz, are regulated by the Federal Communications Commission (FCC). Wireless network professionals must calculate power levels (or RF signal strength) that are being transmitted by wireless devices to make sure their designs are complaint with FCC regulations. They also need to calculate power levels that are being received by wireless devices to make sure the signal is properly received at the destination.

During a study done by German Scientist Heinrich Hertz, he discovered radio waves. In 1985 Guglielmo Marconi used radio waves to create the first wireless telegraph which is now known as the radio. His invention was first done in his parents attic. Marconi used radio waves to transmit Morse Code and it worked. The Nobel Prize in Physics was awarded to Guglielmo Marconi and Karl Ferdinand Braun for the development of the wireless telegraph. Marconi and Braun shared the Nobel Prize equally.

Propaganda also convinced women to join the war effort because women were just as important as men during WWII for the implications regarding productivity for military material. War was a masculine endeavor and it was controversial that women join the military service. To ease the minds of American men, the OWI conceived a respectable female soldier image. In Figure 2, a mother is proud that her son and daughter are both dutiful children and part of the military. This poster conveyed to parents that it was patriotic for daughters to enter the service without having her socially shunned and shame the family (Briones 56).

The third source of radiation is using cellular telephones and radio-frequency (RF) have denoted as a large effect of this type of radiation. "Early studies have shown that there is a relationship between using cellular telephones and the growth of brain tumors. Moreover, unfortunately even under laboratory conditions direct exposures to high energy of RF is difficult to quantify"(5).

Frequency/Pitch: Bluetooth has a frequency in the 2.4 Gigahertz (2400 Hz) range. Bluetooth is often mistaken as the same as Wi-fi because they are both wireless, but Bluetooth is different as it runs on a lower frequency than Wi-fi. (Miller, A.B. 2001)

Radiofrequency energy is a type of electromagnetic radiation. It is currently used in cell phones, and there is some concern in this area because radiofrequency energy has the potential to cause cancer. In cell phones, the radiofrequency energy is emitted from their antennas. The tissues closest to the antenna are able to absorb this energy, and because we generally hold our cell phones in our hands or to our faces, that would mean that radiofrequency energy would be absorbed by our faces or hands. This problem would not be as large if it was not for the fact that the number of cell phone users in just the United States has nearly tripled in the last fourteen years, going from 110 million users to 327.5 million, as estimated by the Cellular

I am going to talk about the arguments about how cell phone radiation can affect our lives and whether these arguments are accurate or not. Cell phone radiation is a type of electromagnetic radiation that has the ability to cause health issues. The radiation from this device can cause serious brain tumours, according to one study by Anna Lahkola of the Radiation and Nuclear Safety Authority in Finland, which found that people who use their cell phone for more than 2000 hours have a higher chance of getting a brain tumour. The

The radio is one of the most influential pieces of technology ever invented. From political debates to Taylor Swift’s latest hit, with the help of the radio, society stays informed on a plethora of topics. Freddie Mercury wasn’t lying when he said, “and everything I had to know, I learned it on my radio.” In almost every country in the world, there is at least one radio station used to broadcast news to it’s people. Since the creation of the FM radio, it has been used to reach out to people over a certain area and keep them informed about the society they live in. During the 1930s and the 1940s, the radio played a very important role in history; it was a tool used during World War II by America, Great Britain, and Nazi Germany. By sending

In an effort to address the issue of radio frequency radiation exposure in this community, we will provide a background on the sources of radio frequency radiation as well as the known and suspected health effects. We will also proposed two epidemiological studies and discuss risk management and

Light waves are a form of electromagnetic waves, which consist of patterns of electric and magnetic energy. The visible spectrum is only a small part of the electromagnetic spectrum-the

radiation (the kind used in X-rays) is known to cause cancer at high doses, the risks of

With today’s science, light becomes more specifically perceived as a spectrum. The specific name for this spectrum is the electromagnetic spectrum, which contains many types of waves (NASA, Electromagnetic Spectrum). In Figure 2, the spectrum shows a variety of wavelengths with specific wavelengths classified by its length. The range of wavelengths humans can see wavelengths that are around 400 – 700 nanometers (nm) as colors while all other electromagnetic waves are simply blind to humans. The interesting classes for light that are used to measure are microwave and infrared light. The laser is

I will start by providing some background information to the topic ‘radio', namely by summing up the most important events in the history of radio. After illustrating the most interesting turning points of the development of radio in the