Bibliography

"How does a Telephone Work?Web. 8 Dec. 2009.

 Http://www.wisegeek.com/how-does-a-telephone-work.htm. 

"Where Was Phone Invented?" Http://www.blurtit.com/q210938.html. Web. 8 Dec. 2009. 

"When Was The Phone Invented?"  Web. http://www.blurtit.com/q624841.html.

"HIstory of Telephone."Web. 8 Dec. 2009. 

http://answers.yahoo.com/question/index?qid=20091110095049AAnh9mX.

"How did the invention of the phone change peoples lives?" 

Web. Dec.2009.http://www.answers.com/Q/How_did_the_invention_of_the_phone_change_peoples_lives

"The History of the Telephone." Web. 8 Dec. 2009. http://inventors.about.com/od/bstartinventors/a/telephone.htm.

Telephone Timeline." Telephone Timeline. Web. 8 Dec. 2009.

 http://www.greatachievements.org/?id=3625.

Anissimov, Michael. "How does a Telephone Work?"  Web. 8 Dec. 2009.

 http://www.wisegeek.com/how-does-a-telephone-work.htm

History of the telephone. Web. 8 Dec. 2009.

http://answers.yahoo.com/question/index?qid=20091110095049AAnh9mX

"How did the invention of the phone change peoples lives?" Web. 8 Dec. 2009. http://www.answers.com/Q/How_did_the_invention_of_the_phone_change_peoples_lives

Bibliography

"Who created the first cell phone?"  Web. 8 Dec. 2009. .

"How did the invention of the phone change peoples lives?" Web. 8 Dec. 2009. http://www.answers.com/Q/How_did_the_invention_of_the_phone_change_peoples_lives

"Telephone Timeline.Web. 8 Dec. 2009. 

.

"WHO INVENTED THE TELEPHONE?"  Web. 8 Dec. 2009. .

bibliography

Anissimov, Michael. "How does a Telephone Work?"  Web. 8 Dec. 2009.

 http://www.wisegeek.com/how-does-a-telephone-work.htm

History of the telephone. Web. 8 Dec. 2009.

http://answers.yahoo.com/question/index?qid=20091110095049AAnh9mX

Bibliography

History of the telephone. 8 Nov. 2009. Web. 7 Dec. 2009. .

How does a Telephone Work? Michael Anissimov. Web. 7 Dec. 2009. .

Telephone Timeline. Web. 7 Dec. 2009. .

"When Was The Phone Invented?" When Was The Phone Invented? 12 Mar. 2006. Web. 7 Mar. 2009. .

WHO INVENTED THE TELEPHONE? Web. 7 Dec. 2009. .

Impact of invention on me

Yes,the telephone is effect me,because when we have telephone,you will contact someone easier.

So the invention of the telephone is impact,not just me..it is impact human's life

What does the telephone do?

It lets you call poeple all over the world if you have there phone number.

What does telephone look like?

How does a Telephone Work?

The telephone operates on simple principles. A telephone mouthpiece contains a thin metallic coating separated from an electrode by a thin barrier (today we use plastic) which connects to a wire carrying an electric current. When a person speaks into the mouthpiece, the acoustic vibrations from her speech push the metallic coating slightly closer to the electrode, resulting in variations in voltage and therefore a speedy conversion from acoustic to electric energy. The electric pulses are conveyed through a wire to the speaker on the other end, where electric pulses are converted into acoustic energy again.

Converting speech to electrical energy before transmission is far more efficient than conveying speech through a mechanical channel, for example a metal pipe, because the walls of mechanical channels absorb so much of the acoustic energy as it travels. Well-insulated wires, however, are effective at protecting electrical energy from dispersing before reaching its destination. Electrical pulses travel at the speed of light, whereas acoustic pulses are limited by the speed of sound. In his 1627 book New Utopia, Francis Bacon referred to the possibility of a long-distance network of tubes to transmit human speech. Many historians consider this the first reference to something like a telephone. Unfortunately, he lacked the scientific knowledge to understand why this would be impractical.

Three critical developments were necessary precursors to the invention of the telephone. First was the understanding that an electrical current can create a magnetic field, and therefore mechanical or acoustic energy. This is credited to Danish physicist Christian Oersted in 1820, who demonstrated that a compass needle can be manipulated by running an electric wire over it. Second was the understanding that the reverse is possible - electrical induction - that is, generating a current by placing a moving magnet next to a wire. This insight is credited to inventor Michael Faraday in the year of 1821. The last necessary development was that of the battery, a chemical device capable of producing a continuous source of electricity. The first very crude battery was the "Leyden jar", a device for storing static electricity invented by two Dutchmen in 1746. Volta and others developed more sophisticated batteries throughout the 18th and 19th centuries.

http://www.wisegeek.com/how-does-a-telephone-work.htm

What was the problem this innovation solved?

If we don't have telephone.It is hard to contact someone,and if we don't have telephone,when you contact someone,you must need to send a letter to the person,and it takes a long time.So when we have telephone,it is easier to contact someone,and fast.

Where Was Phone Invented?

The telephone was invented in March of 1876. The famous incident in which AlexanderGraham Bell spilled acid on himself and called out to his assistant, Watson, not realizing his voice was being carried over the telephone was on March 10.

According to wikipidia, the telephone was pattened January 30, 1877 by Alexander Bell; however, the first telephone may have been made in 1849 by Antonio Meucci.

http://www.blurtit.com/q210938.html

when was the phone invented

Officially, it is said that 29 year old Alexander Graham Bell invented the telephone in 1876. However, he was not the only one who had come up with a mechanism that could transmit speech electrically. Besides Bell, the other was a gentleman called Elisha Gray. Once these two independent machines were made and ran successfully, both men rushed to the official process of legalising their inventions by patenting them. It was here that Graham Bell won themini race when he obtained the patent first. A legal battle then followed but once again luck seemed to be on Bell's side and he won.

Bell accidentally thought about the idea of the telephone while trying to better the function of the telegraph. The telegraph at that time could only send a single message at the time. Bell's in depth knowledge about sound and signals was the key in helping him to figure out a way to transfer multiple messages at one time.

http://www.blurtit.com/q624841.html

History of the telephone

The telephone is a telecommunications device that transmits and receives sound, most commonly the human voice. It is one of the most common household appliances in the developed world, and has long been considered indispensable to business, industry and government. The word "telephone" has been adapted to many languages and is widely recognized around the world.
The device operates principally by converting sound waves into electrical signals, and electrical signals into sound waves. Such signals when conveyed through telephone networks — and often converted to electronic and/or optical signals — enable nearly every telephone user to communicate with nearly every other worldwide.
Credit for the invention of the electric telephone is frequently disputed, and new controversies over the issue have arisen from time-to-time. As with other great inventions such as radio, television, light bulb, and computer, there were several inventors who did pioneering experimental work on voice transmission over a wire and improved on each other's ideas. Innocenzo Manzetti, Antonio Meucci, Johann Philipp Reis, Elisha Gray, Alexander Graham Bell, and Thomas Edison, among others, have all been credited with pioneering work on the telephone. An undisputed fact is that Alexander Graham Bell was the first to be awarded a patent for the electric telephone by the United States Patent and Trademark Office (USPTO) in March 1876. That first patent by Bell was the master patent of the telephone, from which all other patents for electric telephone devices and features flowed.
A traditional landline telephone system, also known as "plain old telephone service" (POTS), commonly handles both signaling and audio information on the same twisted pair of insulated wires: the telephone line. Although originally designed for voice communication, the system has been adapted for data communication such as Telex, Fax and Internet communication. The signaling equipment consists of a bell, beeper, light or other device to alert the user to incoming calls, and number buttons or a rotary dial to enter a telephone number for outgoing calls. A twisted pair line is preferred as it is more effective at rejecting electromagnetic interference (EMI) and crosstalk than an untwisted pair.
Early telephones were technically diverse. Some used a liquid transmitter, some had a metal diaphragm that induced current in an electromagnet wound around a permanent magnet, and some were "dynamic" - their diaphragm vibrated a coil of wire in the field of a permanent magnet or the coil vibrated the diaphragm. The dynamic kind survived in small numbers through the 20th century in military and maritime applications where its ability to create its own electrical power was crucial. Most, however, used the Edison/Berliner carbon transmitter, which was much louder than the other kinds, even though it required an induction coil, actually acting as an impedance matching transformer to make it compatible to the impedance of the line. The Edison patents kept the Bell monopoly viable into the 20th century, by which time the network was more important than the instrument.
Signalling began in an appropriately primitive manner. The user alerted the other end, or the exchange operator, by whistling into the transmitter. Exchange operation soon resulted in telephones being equipped with a bell, first operated over a second wire, and later over the same wire, but with a condenser (capacitor) in series with the bell coil to allow the AC ringer signal through while still blocking DC (keeping the phone "on hook"). Telephones connected to the earliest Strowger automatic exchanges had seven wires, one for the knife switch, one for each telegraph key, one for the bell, one for the push button and two for speaking.
Internet Protocol (IP) telephony (also known as Voice over Internet Protocol, VoIP), is a disruptive technology that is rapidly gaining ground against traditional telephone network technologies. As of January 2005, up to 10% of telephone subscribers in Japan and South Korea have switched to this digital telephone service. A January 2005 Newsweek article suggested that Internet telephony may be "the next big thing." [1] As of 2006 many VoIP companies offer service to consumers and businesses.

http://answers.yahoo.com/question/index?qid=20091110095049AAnh9mX

How has the use of this innovation changed over time

It let people talk to other people almost instantly. This is far different than before the invention because the only way you could talk to someone before was face to face. With a phone you get an idea of what someone sounds like, the inflection in their voice, etc. With a telegraph you could only send out signals that would be decoded into words. Before these methods most people only had the chance to converse with people in their immediate area because many people never traveled far from home all their lives.


http://wiki.answers.com/Q/How_did_the_invention_of_the_phone_change_peoples_lives

The History of the Telephone

n the 1870s, two inventors Elisha Gray and Alexander Graham Bell both independently designed devices that could transmit speech electrically (the telephone). Both men rushed their respective designs to the patent office within hours of each other, Alexander Graham Bell patented his telephone first. Elisha Gray and Alexander Graham Bell entered into a famous legal battle over the invention of the telephone, which Bell won.

Alexander Graham Bell - Evolution of the Telegraph into the Telephone

The telegraph and telephone are both wire-based electrical systems, and Alexander Graham Bell's success with the telephone came as a direct result of his attempts to improve the telegraph.

When Bell began experimenting with electrical signals, the telegraph had been an established means of communication for some 30 years. Although a highly successful system, the telegraph, with its dot-and-dash Morse code, was basically limited to receiving and sending one message at a time. Bell's extensive knowledge of the nature of sound and his understanding of music enabled him to conjecture the possibility of transmitting multiple messages over the same wire at the same time. Although the idea of a multiple telegraph had been in existence for some time, Bell offered his own musical or harmonic approach as a possible practical solution. His "harmonic telegraph" was based on the principle that several notes could be sent simultaneously along the same wire if the notes or signals differed in pitch.

Alexander Graham Bell - Talk with Electricity

By October 1874, Bell's research had progressed to the extent that he could inform his future father-in-law, Boston attorney Gardiner Greene Hubbard, about the possibility of a multiple telegraph. Hubbard, who resented the absolute control then exerted by the Western Union Telegraph Company, instantly saw the potential for breaking such a monopoly and gave Bell the financial backing he needed. Bell proceeded with his work on the multiple telegraph, but he did not tell Hubbard that he and Thomas Watson, a young electrician whose services he had enlisted, were also exploring an idea that had occurred to him that summer - that of developing a device that would transmit speech electrically.

While Alexander Graham Bell and Thomas Watson worked on the harmonic telegraph at the insistent urging of Hubbard and other backers, Bell nonetheless met in March 1875 with Joseph Henry, the respected director of the Smithsonian Institution, who listened to Bell's ideas for a telephone and offered encouraging words. Spurred on by Henry's positive opinion, Bell and Watson continued their work. By June 1875 the goal of creating a device that would transmit speech electrically was about to be realized. They had proven that different tones would vary the strength of an electric current in a wire. To achieve success they therefore needed only to build a working transmitter with a membrane capable of varying electronic currents and a receiver that would reproduce these variations in audible frequencies.

First Sounds - Twang

On June 2, 1875, Alexander Graham Bell while experimenting with his technique called "harmonic telegraph" discovered he could hear sound over a wire. The sound was that of a twanging clock spring.

Bell's greatest success was achieved on March 10, 1876, marked not only the birth of the telephone but the death of the multiple telegraph as well. The communications potential contained in his demonstration of being able to "talk with electricity" far outweighed anything that simply increasing the capability of a dot-and-dash system could imply.

First Voice - Mr. Watson, come here. I want to see you.

Alexander Graham Bell's notebook entry of 10 March 1876 describes his successful experiment with the telephone. Speaking through the instrument to his assistant, Thomas A. Watson, in the next room, Bell utters these famous first words, "Mr. Watson -- come here -- I want to see you."

Alexander Graham Bell - Brief Biography

Born on March 3, 1847, in Edinburgh, Scotland, Alexander Graham Bell was the son and grandson of authorities in elocution and the correction of speech. Educated to pursue a career in the same specialty, his knowledge of the nature of sound led him not only to teach the deaf, but also to invent the telephone.

• More on the Life of Alexander Graham Bell
• Alexander Graham Bell Timeline
• Alexander Graham Bell - Biography

Alexander Graham Bell - Other Inventions

Bell's unceasing scientific curiosity led to invention of the photophone, to significant commercial improvements in Thomas Edison's phonograph, and to development of his own flying machine just six years after the Wright Brothers launched their plane at Kitty Hawk. As President James Garfield lay dying of an assassin's bullet in 1881, Bell hurriedly invented a metal detector in an unsuccessful attempt to locate the fatal slug.


http://inventors.about.com/od/bstartinventors/a/telephone.htm

who create the phone

Alexander Gram bell DID create the first cell phone, he was the inventor of the telephone.

aMrtin Cooper invented the cell phone.

http://wiki.answers.com/Q/Who_created_the_first_cell_phone

When was the phone created

1973 First portable cell phone is made.

1976 Common channel interoffice signaling.

1978 public tests of a new cellular phone system.

1900 Telephone transmission extends across and between major cities.

http://www.greatachievements.org/?id=3625

who is credited for the ivention of the phone

My historcial innovation is the phone.

Ask who really invented the telephone, and you may get the name of a German, Philipp Reis, not Alexander Graham Bell. 

Reis was a 26-year-old science teacher when he began work on the telephone in 1860. His essential idea came from a paper by a French investigator named Bourseul. In 1854 Bourseul had explained how to transmit speech electrically. He wrote:

Speak against one diaphragm and let each vibration "make or break" the electric contact. The electric pulsations thereby produced will set the other diaphragm working, and [it then reproduces] the transmitted sound.

http://www.uh.edu/engines/epi1098.htm

Create a Class Bill of Rights

1.quite
2.If you have any question just  ask,and don't be shy.

3.No cellphone.
4.No drink,food,gum.
5.Come to class on time.
6.Bring required materials every day.

7.Follow the teacher's directions immediately.
8.copy the notes 

9. Pay attention in class

10.Keep an organized notebook for each subject.

What is personality?

    Personality is out look of a person.

How does our personality affect our choices and behavior?

    Sometimes we can see a person's personality in public place,if he or she are shy to speaking.Then we can see his personality are shy

Global Warming

The greenhouse effect, also known as "greenhouse effect" is commonly known as atmospheric thermal effects. Atmospheric short-wave solar radiation can reach the ground, but the outward surface long-wave heat radiation emitted been atmospheric absorption, thus making the surface and lower atmosphere temperatures, similar to cultivated crops because of their role in the greenhouse, hence the name greenhouse effect. If the atmosphere there is no such effect, then the surface temperature will drop by about 330C or more. On the contrary, if the greenhouse effect continuously strengthened, the global temperature will continue to increase year by year. Since the industrial revolution, humans into the atmosphere of carbon dioxide and other heat-absorbing greenhouse gases every year with strong increase in atmospheric greenhouse effect also increases, and has caused global warming, a series of serious problems, caused around the world attention.
And we can fix it by increasing energy efficiency, decreasing the use of fossil fuels and increasing the use of natural energy like solar power, wind power, etc.