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Free research essays on topics related to: radio frequency

11 results found, view free essays on page:

  • Wireless Local Area Network Wlan
    1,780 words
    A wireless LAN (WLAN) is a flexible data communication system implemented as an extension to, or as an alternative for, a wired LAN within a building or campus. Using electromagnetic waves, WLANs transmit and receive data over the air, minimizing the need for wired connections. Thus, WLANs combine data connectivity with user mobility, and, through simplified configuration, enable movable LANs. Over the last seven years, WLANs have gained strong popularity in a number of vertical markets, includi...
    Free research essays on topics related to: radio frequency, peer to peer, frequency hopping, wireless lan, spread spectrum
  • How Safe Are Mobile Phones
    973 words
    Millions of people own a mobile phone these days, and ever since they have been around scientists question the fact of they are safe or not. Do they cause tumors, earaches, mercury poisoning? All these health risks are mentioned in every article I found. But nowhere could I find anything that was sure if mobiles did cause all of the above. This is where science fails us. The problem is that mobile phones are still too new to know the long-term effects on human. Mobile phones give of a radiation ...
    Free research essays on topics related to: mobile phones, brain tumors, memory loss, radio frequency, long term effects
  • Phone While Driving Cellular Phones
    1,535 words
    Over a decade ago the house phone was such a remarkable advancement where it provided a person to call places over thousands of miles away. Then the ease and comfort of wireless phones came out. Now, the invention of cellular phones (a mobile telephone) is an excellent device to do business or call out for help when you need to. While for others it is a failure, annoying and a cause of accidents. Today, cellular phones have become a necessity in a persons pocket. (Vanlaecken, H. ). In According ...
    Free research essays on topics related to: cellular telephones, brain damage, cell phones, cellular phones, phone while driving
  • Radio Frequency Supply Chain
    1,647 words
    Would RFID work to track Products? Well, Bar Codes require a line of sight, so a person (s) with a bar code reader has to get right up on the bar code and scan it. When you are thinking about a supply chain, somebody in the warehouse would have to look at every single case. With RFID, all of the cases on the pallet would be picked up by a single swipe of a reader, even the ones stacked up in the middle that can't be seen. So it's much faster and more efficient and accurate. In the retail sales m...
    Free research essays on topics related to: medical records, radio frequency, supply chain, back room, july august
  • Sleep Apnea Sleep Disorders
    1,272 words
    ... e Multiple Sleep Latency Test (MSLT) measures the speed of falling asleep. In this test, patients are given several opportunities to fall asleep during the course of a day when they would normally be awake. For each opportunity, time to fall asleep is measured. People without sleep problems usually take an average of 10 to 20 minutes to fall asleep. Individuals who fall asleep in less than 5 minutes are likely to require some treatment for sleep disorders. The MSLT may be useful to measure t...
    Free research essays on topics related to: lower jaw, sleep apnea, fall asleep, radio frequency, sleep disorders
  • Market Demand For Microchip I D In Mexico
    858 words
    Market Demand for Microchip I. D. in Mexico First of all I would like to note that most usual microchip ID is an implantable, 12 mm by 2. 1 mm radio frequency device about the size of the point of a typical ballpoint pen. Each microchip will contain a unique identification number and other critical data. Utilizing an external scanner, radio frequency energy passes through the skin energizing the dormant microchip, which then emits a radio frequency signal transmitting the identification number a...
    Free research essays on topics related to: mexico, identification, smart cards, radio frequency, microchip
  • Warning Signs Radio Frequency
    2,299 words
    Bugging (Everybody's Favorite Subject) A Bug is a device which is placed in an area which then intercepts communications and transmits them out of that area to a listening post. There are five categories of Bugs: (Acoustic, Ultrasonic, RF, Optical, and Hybrid). Acoustic is the placing of a water glass, stethoscope, or rubber tube into an area and directly intercepting the communication with the naked ear. Ultrasonic is a technique to convert the sound into an audio signal above the range of huma...
    Free research essays on topics related to: construction companies, radio frequency, phone lines, warning signs, air conditioning
  • National Security Agency Cyber Terrorism
    3,108 words
    Its 8 a. m. , morning rush hour in New York. People and cars move slowly and somewhat irritably toward the city. Suddenly, the power goes down and traffic lights cease working. Everything comes to a complete stop. Meanwhile, half way around the country, the water system malfunctions in Detroit. Then, in Dallas, air traffic becomes dangerously chaotic as guidance systems go offline. It seems like a series of unconnected events. But information security experts say it could also be the sign of a t...
    Free research essays on topics related to: organized crime, cyber terrorism, national security agency, telecommunications infrastructure, neo nazi
  • Long Term Effects Mobile Phones
    898 words
    Millions of people own a mobile phone these days, and ever since they have been around scientists question the fact of they are safe or not. Do they cause tumors, earaches, mercury poisoning? All these health risks are mentioned in every article I found. But nowhere could I find anything that was sure if mobiles did cause all of the above. This is where science fails us. The problem is that mobile phones are still too new to know the long-term effects on human. Mobile phones give of a radiation ...
    Free research essays on topics related to: long term effects, radio frequency, brain tumors, mobile phones, memory loss
  • Earths Surface Earths Atmosphere
    2,475 words
    Propagation as defined by Webster Dictionary as the phenomenon of radio frequency energy traveling through the earths atmosphere, as well as through the empty space above the atmosphere. Once radio-frequency energy has been emitted from an antenna it will travel away from the antenna, where it is generated from, at the speed of light. Once it is sent the wave exists and propagates independently of the system that produces it. This means that changes, which occur at the transmitter (antenna), wil...
    Free research essays on topics related to: radio waves, radio frequency, low density, earths surface, earths atmosphere
  • Radio Waves Radio Frequency
    584 words
    Radio waves travel at 186, 000 miles per second through air. In contrast, sound waves travel at only 1 / 5 of a mile per second. If a modulation is made of the radio wave that exactly reproduces the amplitude and frequency characteristics of the original sound wave, then sound can be transmitted rapidly over long distances. This leads to a very interesting phenomena. During a live broadcast in New York, the music will reach listeners in California a fraction of a second before it can be heard by...
    Free research essays on topics related to: radio frequency, frequency, high frequency, waves, radio waves

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