StudentShare
Contact Us
Sign In / Sign Up for FREE
Search
Go to advanced search...
Free

Radio - Essay Example

Comments (0) Cite this document
Summary
This was formulated by Michel Faraday. Joseph Henry is also associated with the same concept. The theory formulates that electrical current flowing from a wire induces or creates the electric transmission…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER96.6% of users find it useful
Radio
Read TextPreview

Extract of sample "Radio"

Radio Common 72 of the Radio The advent of radio can be one of the pioneering technological evolutions and is widely used all over the world.
It was in the early 1800’s that the theory of inductance was developed. This was formulated by Michel Faraday. Joseph Henry is also associated with the same concept. The theory formulates that electrical current flowing from a wire induces or creates the electric transmission in rest of the wires. In 1887, Heinrich Hertz gave the insight on the electromagnetic waves of energy. Thus the unit of frequency was named after him as Hertz. In 1892, Edouard Branley invented that metal are more responsive to the electromagnetic energy. After fine study and exploring these inventions, it was on 12th December, 1901 that Guglielmo Marconi transmitted the letter “S” from Podhu in Cornwall, and received at St. John’s Newfoundland. This was the memorable moment in the history as radio was invented.
Later, Sir Ambose Fleming developed the diode electron tube which can detect high frequency radio waves. Canadian scientist Fesseden, who is considered as the father of Broad casting radio, was successful in transmitting human voice and music without wires. In 1906, Lee De Forest invented the audion, the first triode electron tube to amplify radio waves. Armstrong developed frequency modulation, in 1918, which reduced interference and noise. The radio was actually born at the time of World War II as Voice of America and was used to transmit information and propaganda during the war. There were shows like the Words of War which was an anthology of war stories.
After finding the interesting facts on the invention, it would be good to understand how to build a radio. We can make the crystal radio that is simple and can be made with household items.
Materials needed:
Capacitor: aluminum foil, paper towel roll, wire, tape
Coils: toilet paper roll, magnet wire
Wood: with the flat base, wiper blade of V shape and stand to hold the capacitor
1N34 germanium diode
Antenna: 15 foot wire
2000 ohms ear piece
Instructions:
1. Cut the foil into 6×6 inch and tape onto the paper tower. Leave 1cm at the bottom. Cut another 7×7 piece of white paper and keep the 6×6 inch on the middle of it. Wrap it to the paper towel roll using the tape and ensure that we can slide it up and down with ease.
2. Take a piece of wire one string long and get 90 degree turn and tape it to the top corner of the free moving foil. Cut another piece of the wire the same way and paste it to the bottom which doesn’t move.
3. Take the toilet paper roll and place the tapes twice on the same direction. Peel back one of the tapes and place the wire by leaving one foot long and start spinning on the roll about 25 turns. Leave the other end of the wire at the same direction nearly one foot long. Paste the tape again. To make the second coil we use 90 turns and start spinning from 1/8th of the inch from the first coil.
4. Take the piece of wood which can hold the capacitor and can be moved freely. Place the top of the coil to contact with the blade to tune.
5. For earth ground connection we can use the plug and household wiring. Place the other end to the flat wood and tape it.
6. To get the antenna use the 15 foot wire laid out on the floor. And tape the other end on the flat wood.
7. Use the diode which has grey stripe on one end and tape it with the colored stripe facing outwards.
8. Use the 2000 ohms ear piece, Take the coils end of the wire and scrape gently to remove the enamel or dissolve it in nail polish remover. Attach the ear piece wire and the coils wire with the ground connected wire on the wood and twist the wire tightly. Take the diode wire and the ear piece wire and twist it tightly. Take another wire and connect it with the blade and the ground connection.
9. Adjust the wiper as a tuner to hear and then rotate the capacitor.
Conclusion: This gets the power from the radio waves and we can tune according to the frequency that it can receive.
Care has to be taken while making the radio and the parts have to be kept in right order. If they are not placed properly then it may not allow us to get proper signals.
The same situation I had to go through when I was preparing the crystal radio. I used the CD player’s earphone and was unable to hear.
Once I replaced it with the 2000 ohms ear piece it allowed the crystal radio to work.
This made the concept clear that, “A sensitive earphone does not use very much current to create the sound. Another way of saying this is that not much current is going through the earphone. Our radio needs a certain amount of current to flow through the diode in order to work.”(Homemade Radio)
The self made radio has boosted the confidence level. It gave the basic idea about the circuit elements which are essential for receiving radio signals. Once the radio is built, it made me listen to the radio broadcasts. There were some hurdles on the way which helped me to face it as a challenge and overcome by learning new concepts. As the work was practically executed it provides the insight on different aspects that has to be followed in a chronological order and to give positive results. The usage of radio has made the world find the effective channel of communication.
These concepts can form the foundation to build radio in cars. This can be the best way to utilize the learning and explore it at the fullest.
It would be an added advantage to our studies when we can get the details on the making of the radio. There are interesting facts that can help us to comprehend more and one of them is regarding the discovery of radio waves.
One of the findings in the earlier 1930’s gives us more insight on its usage.
It was after three years of the discovery of Universe by Hubble, that there was a huge revolution in the field of astronomy. There was a discovery regarding the mysterious object that lies in the dust of the centre of the Milky Way. It opened up the new path in the field with the discovery of radio waves in the sky.
It was in the year 1930 that Karl Guthe Jansky was working in the Bell Laboratories as a Physicist. His work included identifying the interferences that occurs in the 15 meter wave length. His work was to record the wave length and provide the calculated data. He worked almost a year and was able to get more information. He found that, they are of three forms. It was from earth’s ion. One of the forms was from the thunderstorms and the third one was a mysterious one. He could relate it with the sun’s rays. He inferred that it comes with the rose of the sun and rotates the whole day. It sets as the sun sets. Later he could comprehend that the mysterious object also drifted away from the sun and pointed towards the constellation Sagittarius. This unknown object was in the centre of the galaxy and it relates with many strange objects. This pointed out to the unknown object and can make the discovery which was with radiances that has many light years.
As time passed astronomers did research on this and found that this is a super massive block four times bigger and provides equivalent sounds and considered to be the radio waves. This proved the theory that the radio waves are found in the Milky Way.
After building radio by using simple homemade items it builds in confidence that it is with strong observation and by analyzing the thoughts one would bring in new concepts in to existence. We need to be vigilant with the surroundings and make the best utilization. The invention of radio can provide the individual with the insight on the various scientific features and help to apply on their day to day life.
The show that provides the audience with the insight on discovery of science is How It’s made. The show that was related to the usage of radio waves in the microwaves oven shows how the radio waves are transformed with the electromagnetic cooking energy.
The oven consists of the cooking chamber, wave guide, rotator tray, capacitor and magnetron. From the show it reveals that it works with the help of electric current which flows from the transformer. The transformer and the capacitor super charge the electricity and feed it to the electric magnetron.
During the making of a radio we have seen the same application of technology. It is the foundation for any work that is related with radio waves. Based on this many new concepts are formed.
This can be a great experience and to have strong foundation with the basic knowledge and can be used at the appropriate manner. This kind of radio discovery has proved that the invention brings in the application of new concepts and helps mankind to uplift their way of leading the life. The technological advancement can provide the enthusiasm to work towards it and achieve success with flying colors.
References
1000 Greatest Discoveries Shorts, Milky Way Radio Waves, Discovery Communications, 2012.Podcast. http://science.discovery.com/videos/100-greatest-discoveries-shorts-milky-way-radio-waves.html
Discovery Communications, How It’s made, Podcast retrieved from http://science.discovery.com/tv/how-its-made/#fbid=JxC6zod1QD1
Dunning, John. World War II on the radio, Web Counters, The Encyclopedia of Old Time Radio. Retrieved from http://ppages.bfree.on.ca/rdrake/wwii/index.htm
Make a Crystal Radio, How to make /build a crystal radio, Article."Radio Receiver Projects You Can Build" .Podcast retrieved from http://www.youtube.com/watch?v=VqdcU9ULAlA
Make a Crystal Radio, Part 2, a ten minute radio, YouTube, Podcast retrieved from http://www.youtube.com/watch?v=Zq9I2iuDkAc&feature=channel&list=UL
Radio, Science Toys, Homemade radio. Retrieved from http://scitoys.com/scitoys/scitoys/radio/homemade_radio.html
Deconstructed: How microwave oven works, Discovery Communications, How it’s made, Podcast retrieved from http://science.discovery.com/videos/deconstructed-how-microwave-ovens-work.html Read More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Radio Essay Example | Topics and Well Written Essays - 500 words - 1”, n.d.)
Retrieved from https://studentshare.org/education/1597851-radio
(Radio Essay Example | Topics and Well Written Essays - 500 Words - 1)
https://studentshare.org/education/1597851-radio.
“Radio Essay Example | Topics and Well Written Essays - 500 Words - 1”, n.d. https://studentshare.org/education/1597851-radio.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document

CHECK THESE SAMPLES OF Radio

The Radio

... of entertainment, information, propaganda, political and religious fervor, culture, and even negativity everywhere (Lewis 26).This paper briefly studies the formation, evolution, and impact of radio on human life and concludes that radio is not doomed by its fleshier competitors, but it has evolved. Radio refers to the signaling or audio communication by using electromagnetic radiations. In its early days, it was developed as a "wireless telegraph", for one point to the other point links. The wireless telegraph made it possible to send messages to multiple locations at the same time, by using dots-and-dashes of telegraphic code in early days, while in full audio during later periods (White). The historical Background James Clerk Maxwell...
15 Pages(3750 words)Research Paper

Radio System

...of Canada. Prime focus is providing of services in affordable range at an optimum cost and improved quality communication with in an office setup. Since the radio system will be developed and installed in an office environment, for this purpose a fix frequency radio system is recommendations .The report looks at the overall working of radio system and it further contains list of requirements and the methodology of how to implement the whole setup Introduction: Radio signals are operational over line-of-sight through the use of an amplifier, in case of non line of sight reflections and rarefaction techniques are used .Although an ad-hoc system setup can be implanted...
2 Pages(500 words)Essay

Radio shack

... and to stay pertinent to clients in each era. This paper will discuss RadioShack’s development, employee’s protection and its future plans. RadioShack Corporation traces its origins to two distinct and very diverse entrepreneurial enterprises: the Hinckley-Tandy Leather firm, a leather shoe parts’ supplier to shoe-repair shops established in 1919 Fort Worth, Texas; and RadioShack, a merchandizing store as well as a mail-order operation, which was founded in 1921, Boston to meet the radio officers’ needs aboard vessels. RadioShack rapidly grew to incorporate a number of stores within the Northeast, in addition to a prosperous electronics mail-order production. The Hinckley-Tandy Leather firm also thrived, and during 1954, it vended its top...
4 Pages(1000 words)Essay

Radio Technology

... (Crisell, 2002; 15). Later on, in around 1895, an Italian discoverer, Guglielmo Marconi, did attest the viability of radio as a means of communication. In point of fact he launched and received radio indicator in Italy in the year (Bellis, 2010; 5). However, according to Crisell (2002; 15) in 1894 Sir Oliver Lodge did use wireless waves to send signals in Morse code, an act which made him the inventor of wireless telegraphy and three years subsequent to that he demonstrated effectively how a radio receiver could possibly 'tune' to a particular transmitting station (Crisell, 2002; 23). Besides Marconi, his two colleagues, Nikola Tesla and Nathan Stufflefield won out copyrights for radiotelegraph (History of Radio, 2010; 3). The subsequent...
8 Pages(2000 words)Essay

Radio Broadcasting

...with entertainment programs, like music, talks etc. After the American government stepped in to regulate this air traffic of signals by allotting licensed frequencies to the private operators, the era of commercial broadcasting came into being and led to a perceptual shift in the American culture. The men and boys saw the experimentation with radio as a symbol of masculine prerogative, brought it into their homes, and introduced it to the other family members. The listeners discovered the new face of their individual identities, closely linked to the idea of cohesive nationhood, through broadcasts of diverse entertainment programs and news items. Gradually, commercial reasons led to the introduction of advertisements...
4 Pages(1000 words)Essay

Satelite radio vs. terrestrial radio

... recorder, nothing was ever the same. Before, choices in films were very limited. Whatever was on the marquee was the entertainment for the evening. Now, not only do we enjoy greater selection, but also have the freedom to watch certain parts of a film over and over again, making sure we miss nothing. How does this compare to the differences between satellite and terrestrial radio? Although presently, satellite radio is too new to really look upon with the 20/20 vision of hindsight, we do have the freedom to speculate about the future. In his book, James Wood says that “Every new medium of information has made advances on the previous generation of technology and in so doing has established new values, created an awareness...
2 Pages(500 words)Essay

Radio

..., focuses on giving advice to parents and care givers on stages of child development and coping with the resulting changes. This show goes the extra mile of inviting experts on the relevant areas to ensure that the information is valid. Learning institutions in participating in educating through radio also have their own stations run by students. Renowned universities such as University of Ohio, Wisconsin, Princeton, Berkeley, new York University and almost all capable universities run station that contain content aimed at its students and other relevant parties (Lamb, 2012). Artistic radio shows have a wide range of concepts stemming from music, art commentaries and critics. Music is, however, the greatest distinguisher of these artistic...
4 Pages(1000 words)Essay

Radio sounds

... This paper was prepared for the _________ taught by ____________. Meteorology: La Niña La Niña is a weather phenomenon, counterpart of the El Niño. It is part of the broader concept called El Niño-Southern Oscillation Climate Pattern. In common terms, El Niño can be described as the warm weather counterpart and La Niña can be characterized as a cool weather phenomenon. Introduction El Niño Southern Oscillation (ENSO) is a cycle. The warm phase, as mentioned above, is called the El Niño Phenomenon and the cool phase is the La Niña phenomenon. Their names come from Spanish, meaning boy and girl, respectively. To understand La Niña and El Niño, one must first discuss the El Niño Southern Oscillation (ENSO). ENSO is a periodic... This paper...
6 Pages(1500 words)Research Paper

Radio Advertising

... and tastes. To add more, the majority of radio stations have duplications of their broadcasts on the Internet, so everyone can access the broadcasts regardless of geographical location. The range of the radio stations found for this essay is rather heterogeneous in genre. The Whale 99.1 FM is the radio station focusing on classic rock, as it is stated on the website and clearly understood from the repertoire. WBGO 88.3 FM, the Ney York radio station stating its format as Jazz offers a variety of jazz compositions and related programs. 1033 The EDGE Rock Radio focuses – obviously – on rock format including both old and new songs. Country 106.5 WYRK Radio has mainly country format; 95.5 PLJ New York radio station offers a mixture of genres...
2 Pages(500 words)Essay

Radio Frequency Identification

According to studies, the price of RFID will approach $0.05-0.10 if purchased in bulk. When this trend continues, it would not be long before the market will lean towards the RFID due to cost-effectiveness, thus, possibly defeating the role of barcodes that are widely used for commercial purposes with about 5 billion worldwide occurrences daily. One of the organizations that are working to regularise RFID is EPCGlobal Inc., which is a cooperative effort between UCC and EAN. These are the two parties responsible for the application of barcodes in the U.S. and European markets (RSA Security, 2004b).

Through the advantages brought about by the RFID, problems in the privacy of consumers are raised by certain groups. Concern...
12 Pages(3000 words)Report

How Did Radio in the 1960's Mark the Changing Social Order in the UK and US

... expression. It will examine how radio, both mainstream and pirate, marked the social changes of the 1960s and, further, how it at times even actively promoted it. This essay will focus predominantly on the social situation in the UK. However some reference to the US will also be made, given the striking parallels and social interaction between the two countries. The radio, before the advent of television, had long been the tool through which news, politics, music and culture was diffused to the population. The programmes were chosen, written, edited and distributed by the institution and reflected, for the most part, the gentile middle classes. They catered for middle aged tastes and rarely attempted to take on hard hitting social issues...
7 Pages(1750 words)Term Paper

Satellite Radio

..., there will also be many great rewards if the exporting is handled sensitively and correctly. Industry Review Satellite radio began as an alternative to traditional radio, that was limited by spotty coverage in rural area and questionable sound quality. (Gosselin & Gregg, 2003, p. 1). Satellite radio promised "fewer commercials, enhanced sound clarity and uninterrupted signals to this segment of the radio audience." (Gosselin & Gregg, 2003, p. 1). Working similarly to satellite television, satellite radio produces, record and mixes programming in a broad studio, which is then sent to satellite that orbit the earth, reflect the signal back and disperse it throughout the United States. (Gosselin & Gregg, 2003, p. 1). Satellite radio...
12 Pages(3000 words)Term Paper

Designing a Cellular Mobile Radio Communication System for Gold Coast, Australia

... and specialised field with limited interests to one of the most important fields of telecommunication [Kun10]1. Consequently, rapid growth is achieved in this sector due to new services and emerging technologies making social and business activities to rely heavily on wireless communications [Dav105]2. Mobility, coupled with unbridled access to resources that were earlier domains of fixed infrastructure networks e.g., the public switched telecommunication (PSTN) and the Internet etc. is giving users flexibility in new opportunities for efficient use of telecommunication [Kun10]1. 1.1 Background Mobile radio communication is a broad term, which encompasses an array of systems and techniques, provides a variety of combined services...
19 Pages(4750 words)Research Paper

Newspapers and Radio After the Revolution in Mexico: Changes in the Media

...friends of the ruling party were able to avoid these laws and critics were subjected to continuous legal difficulties. Even though there are laws in Mexico to protect and safeguard the interests of the media, the media continues to get harassed from time to time. Article 6 of the 1917 constitution stipulates that expression of ideas shall not be subject to any judicial or administrative investigations unless they offend the good morals or infringes personal rights or incites crime or disturbs the order of the public. The Article 7 of the constitution stipulates that freedom of writing as well as publishing is inviolable. The Article 4 of the constitution stipulates that the radio and television media is part of public interest...
10 Pages(2500 words)Research Paper

Early Radio Headphones Fell Out of Favor

.../ DVD, home theatre, personal computers and laptops etc. The other type of head phones is a most recent form. The wireless head phones can be taken anywhere. They work with radio signals or the infrared rays. In recent times head phones specially the cordless ones are used more for the professional purposes. In disco, recording rooms, concerts, listening tests and in personal chat, cordless head phones are used more widely. They are used by airplane pilots too. Furthermore, head phones are used in telephones as well. Head phones are more common among youngsters than the mid-aged or old age persons. But as an invention head phones are not devoid of side effects as well. Radio head phone...
8 Pages(2000 words)Assignment

Does Radio Have a Future

... made the first successful transmission of audio over airwave (ONeal, 2008). The next decade saw several radio experimenters building their own radio receivers and by the evening of November 2, 1920, Westinghouse has launched KDKA as the first commercially licensed radio station (EncyclopædiaBritannica, 2011). From 1920 onward phenomenal successes were made in radio technology and broadcasting through research activities in Europe, North America, and Asia. The phenomenal success in the art and science of radio has greatly influenced human activities ranging from politics, economics, culture, and religion (NationalMuseumofAmericanHistory, 1933; BBC, 1940; Saul, 2009). However, recent advances in science and technology offers the same...
12 Pages(3000 words)Research Paper

Radio Frequency Transmitters and Receivers

...signal from the microphone is modulated to radio frequency carrier at the modulation stage. Frequency Generator The frequency generator, also known as the oscillator, provides the radio frequency transmitter with the appropriate operating frequency. The signal generator determines the frequency that the transmitter operates on throughout the transmission process. RF Power Amplifier Power amplification is the final stage of the radio frequency signal transmission process. The power amplifier strengthens the radio frequency to enable long distance transmission through the channel.Transmission of the radio frequency over long distances requires strong...
11 Pages(2750 words)Assignment

Radio Frequency Transmitters and Receivers

...-frequency (FM), modulation index( ß) is defined as the ration of carrier that deviates from the unmodulated frequency divided by the modulator frequency. ß = (Dfc-pk) / fm. It can therefore be argued that the Modulation Index determines the amplitude of the spectrum components of the FM output signal. Task 3 AM tuned-radio frequency (TRF) receiver Antenna Output A tuned radio frequency receiver refers to a radio receiver which is often composed of a number of multiple tuned radio frequency amplifiers which are followed by circuits for purposes of detection and...
6 Pages(1500 words)Assignment

Radio and Television as Information Media

... and television as a mode seeking information. Their characteristics will be defined with it usability to various instances determined. The end user always chooses models that are reliable and offer a variety of services within a specific period and time. The nature in which people interact with each other is essential to their existence. Information is vital and people invest heavily in order to attain amount of information. The radio offer listeners a chance to interact with the medium and suggest changes to be undertaken by a specific media house. The television on the other hand offer visual effect advantages to the end users. There is need to identify the most appropriate media. The users may choose media based on influence...
8 Pages(2000 words)Assignment
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Essay on topic Radio for FREE!

Contact Us