Means of Communication Purpose Audience Telegram To send messages quickly and easy through telegraphs. People Letter Writing To communicate with family‚ friends‚ send a document‚ etc. Used for private communication. People Radio To let people know what is going on in the world. Used for mass communication. People Newspaper To let people catch up on current events around the world and in people’s local communities. Used for mass communication. People Telephones To communicate by voice to one another
Premium Instant messaging Internet Message
from true form. Again‚ it is important to understand that realism (naturalism) was created to show life in its purist form. Art made for the common man. In the early 1920’s after World War I had ended and in the same era as the first commercial radio broadcast‚ A very different display of art was on the horizon‚ Surrealism. Surrealism is best proclaimed for its writings and visual arts. The image artist were in interest of displaying was a dream state of reality. Artist painted unnerving‚ illogical
Premium Romanticism Art Radio
We use the radio portion of the electromagnetic spectrum for many things‚ including television and radio broadcasting‚ telephones and other wireless communications‚ navigation and radar for a variety of measurements including police speed traps‚ and even microwave cooking ovens. 2 Objective After reading this unit‚ you should be able to understand: • Microwave Frequencies • Microwave link Properties • Microwave radio relay • Different Digital radio systems 3 Classification
Premium Electromagnetic radiation Radio Microwave
public. It is therefore free from political influence and commercial pressure. (UNESCO) A “Public Broadcaster Services” (“PBS”) has the role of broadcasting in the interest of the public. The SABC in South Africa owns fifteen PBS radio stations of which eleven of its PBS radio stations broadcast in each of the eleven official languages. Along with serving the interest of the public by educating and informing them‚ the SABC is also associated with the task of national unity and reconciliation. Therefore
Premium Broadcasting Public broadcasting Commercial broadcasting
Uses and Abuses of Media Imagine a city without televisions‚ radios or Internet connections. All these media facilities provide people awareness of what is going on around them. Electronic as well as Print Media is an effective way of communication as it provides link between ordinary persons and others in the world. It is only due to newspapers that we can read in the morning about the events that took place on the other side of the world only the day before. Besides‚ electronic media can telecast
Premium Newspaper Radio Printing
and unguided media 2.What are three important characteristics of a periodic signal 3.Define funamental frequency 4.What is attenuation? 5.Describe the components of optical fiber cable. 6.Indicate some significant differences between broadcast radio and microwave. 7.What is the difference between diffraction and scattering? 8.List and briefly define important factors that can be used in evaluating or comparing the various digitial-to-digital encoding techniques. 9.What function doeas a modem
Premium Optical fiber Modulation Wave
discovers radio waves. Marchese Guglielmo Marconi demonstrates wireless radio wave propagation. 3) 1865: 1866: 1876: 1877: 1880: 1887: Prepared By : Raniel P. Babon 1 BOOK REVIEW IN COMMUNICATIONS Electronic Communications System By Wayne Tomasi 1888: Heinrich Hertz detects and produces radio waves. Heinrich Hertz conclusively proved Maxwell’s prediction that electricity can travel in waves through the Earth’s atmosphere. Marchese Guglielmo Marconi builds his first radio equipment
Premium Radio
CONCEPT OF WIRELESS ELECTRICITY (Wi-Tricity) Our forefathers marveled at the invention of glowing light bulbs by Thomas Edison in 1879. However‚ to us 21st centurions‚ the light bulb is nothing out of the ordinary. When computers‚ cell phones‚ laptops‚ iPods‚ etc. were invented our antennas tweaked. Now this is what you call invention! However‚ as time’s progressing we are getting used to these devices. In fact‚ charging all these appliances has become so very cumbersome. Each appliance has its
Premium Radio Nikola Tesla Mobile phone
Senior Science Research Project Aaron Aherne-Williams Fibre-Optic Telecommunications Systems: Fibre-optic telecommunications is simply a method of transmitting information from one place to another extremely fast. This is done by shooting pulses of light through an optical fibre. Creating the optical signal involving the use of a transmitter‚ relaying the signal along the fiber‚ ensuring that the signal does not become too distorted or weak‚ receiving the optical signal‚ and converting it
Premium Radio Optical fiber Mobile phone
The radio waves used in radar help to decide the range‚ angle‚ or speed of objects. Radio waves have the longest wavelength‚ smallest frequency‚ and the least energy of all electromagnetic waves. These waves are a type of electromagnetic radiation‚ which additionally include microwaves‚ infrared radiation‚ x-rays‚ and gamma rays. Other important uses of radio waves are for television‚ cellphones‚ and
Premium World War II Cold War Electromagnetic radiation