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Essay on history of microscope 3000 word
Essay about the first microscope
Essay on history of microscope 3000 word
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Have you ever wondered how singers make their voice sound so good? Well that's not always the microphone that does that, but I will explain to you what it does do. The microphone was invented in 1876 by a German born American by the name of Emile Berliner. Over time the microphone has became more and more useful and come in many different shapes and forms, from hearing aids to microphones used a presidential speeches. All the microphones all have one thing in common though and it is that it is a transducer. A transducer is a device that converts one form of energy into another.
There is two types a microphone can be, it can be dynamic or it can be condenser. What the microphone does when it is a dynamic microphone is that when you talk into
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On the other hand, we have the condenser microphone which takes two plates that are electrically charged(also known as the capacitor) and vibrates them back and forth. So when a condenser microphone has sound travel through it the diaphragm and the other electrically charged plate vibrate they vibrate back and forth between each other and produce an electric current which then makes its way through the electrical cord and into the speaker and amplifies the sound. So when you talk your sound waves go through the microphone and come out as a electric waves. But underneath the dynamic and condenser microphones become into even more categories. In these categories there is 9 different types, The large diaphragm condenser microphone which is the microphone that is a bit bigger and may be used on youtube channels so that you may be able to hear them better. The next one is the small diaphragm condenser microphone which is the microphone that doesn't have that big silver top and still you hold it in your hand. The …show more content…
In dynamic microphones the sound wave produced by your voice passes through a diagram and then vibrates a wire coil that has a magnetic field around it. In a condenser microphone on the other hand has two diaphragms and vibrate back and forth when your sound wave passes through them and the vibration in both microphones produces electrical waves which then can travel through your cord or whatever. One thing is in common on both microphones though and that is that they are transducers and transducers and things or devices that turn one type of wave like in this case which is sound waves into a different wave which would be electric waves. Under the condenser and dynamic microphones there is around 8 more types of microphones that fulfill different jobs for different people. Microphones have came a long way since the first microphone and vary in shapes and
The telephone was said to be invented by Alexander Graham Bell, some critics believe that the real inventor was a man named Elisha Gray. After many debates people commonly now believe that Alexander Graham Bell invented the first telephone. Inspired by his deaf parents he wanted to invent something that people could use easily and was easy to access. So he worked on his invention day and night for many days. Eventually He got the perfect thing that he had been looking for. He had finally invented a device that you could hear human voices through technology. On March 7, 1876 after all of Alexander G. Bell’s hard work he patented his great invention...
Before 1925 recordings were made with an acoustical horn that would capture the sound of the musicians in front of it and transferred the vibration to a cutting stylus. No electricity was used. This process is called the acoustical process. In 1925, microphones were introduced to transfer the acoustical energy to an electric signal, which fed the cutting stylus. This electrical process ameliorates sound recordings.
It was a bone-chilling winter morning in Bavaria. My alarm clock rang, and I slapped it to snooze. Oh no, I was not getting up that day. I had just finished the worst school week of my life. If we zoom back to that time two years ago, I was a 14 year old foreign exchange student in southern Germany. Bullying from the kids in school had made my homesickness unbearable. But that’s not all. I eventually became so anxious throughout my exchange that I chewed all the skin around my nails, gained 15 pounds, and finally, had to book my flight back home January 1st.
Specific Purpose: To help people to understand what Audism is and that the lack of an ability to hear does not mean they are incapable of performing tasks.
For the informative speech I chose to inform my audience about Muncie Indiana. I did this topic to get the attention of ball state students, and make them realize what an awesome place Muncie Indiana really is. I informed them on the history of Muncie to hopefully encourage them to get more involved in the community outside of classes. I feel that the students learned a lot about Muncie they would have never known. I do believe could have done a better job at making in more intriguing and kept their attention all the way through my speech. If I would have done this better I would have been able to sale the idea getting more involved with the city that brought thousands of students their college education.
You might be wondering how hearing aids work. Well hearing aids make sounds louder so that if a person has trouble hearing can be able to talk to other people and participate in their everyday activities. Thank you to today’s technology hearing aids work with digital technology and they are now equipped with strong computer chips. A hearing aid has a couple different parts...Those parts are the earmold, ear hook, microphone,speaker, amplifier, and the battery. The hearing aid receives the sound through the microphone, which transforms the sound waves to electric signals and then sends them to the amplifier and then the amplifier increases the power of the signals and it then sends them to the speaker so the person could hear it.
2. Auditory Trainer Device: This device consists of a microphone worn by the teacher, and a headset worn by the student. The student is able to directly hear what the teacher is saying through the headset, proving to be less obtrusive and distracting than the classroom amplification system.
Throughout the nation catastrophes occur on a daily basis; however there are a few catastrophes that have taken national precedence and left a traumatized nation. Most usually these catastrophes are an act of terrorism. Michael Nelson (2010) describes the nature of such terrorism catastrophes as disconcerting, unanticipated and that unnerve “the country’s sense of safety and identity” (p. 20). When such “a traumatic event results in the death of civilians” and “calls the nation’s institutions or values into question” the nation as a whole looks to their leader, our president, to offer solace and calm through a responsive speech (Campbell and Jamieson, 2008, p. 102). In Presidents Creating the Presidency, (2008) the authors have labeled these speeches as a national eulogy in which they usually occur at the sight of the
A transducer is a mechanism that changes one form of energy to another form. A toaster is a transducer that turns electricity into heat; a loudspeaker is a transducer that changes electricity into sound. Likewise, an ultrasound transducer changes electricity voltage into ultrasound waves, and vice versa. This is possible because of the principle of piezoelectricity, which states that some materials (ceramics, quartz, and others) produce a voltage when deformed by an applied pressure. Conversely, piezoelectricity also results in production of a pressure whe...
Reason to listen: The guitar is an instrument that can be heard in all types of music, it would be nice to know some information about the guitar.
The voice is our primary mean of communication and expression. We rarely last more than a few minutes without its use whether it is talking to someone else or humming quietly to ourselves. We can use the voice artistically in many ways. For example, singing carries the rhythm and melody of speech. It creates patterns of pitch, loudness, and duration that tie together syllables, phrases and sentences. We use the voice for survival, emotion, expression, and to reflect our personality. The loss of the voice is a severe curtailment to many professions. It is affected by general body condition which is why we need to consider the location of the larynx and how that organ produces voice. Surprisingly, this complex biological design is mechanical in function. It is mechanical to the point that when it has been excised from a cadaver and mounted on a laboratory bench, the larynx produces sounds resembling normal phonation. (Titze, Principles)
This way the phonophone and the film projector will always be moving at the same rate. . With both of the systems moving at the same rate it would ensure that the picture and the sound stayed synchronised through the duration of the film. The condensed microphone, the photophone and the film projector all working together became known as the vitaphone This invention was turned down by Hollywood so Warner Brothers, Inc. decided to make movies on their own. After seeing success by the Warner Brothers, later on other major film studios soon adopted the vitaphone idea. The vitaphone offered the best deal all around for filmmaking.
The sound waves from the caller's voice cause the plastic disk to vibrate, changing the distance between the disks, thus changing the intensity of the electric field. These variations are translated into an electric current which travels across the telephone lines. The receiver of a telephone is composed of a flat ring of magnetic material. Underneath this magnetic ring is a coil of wire where the electric current flows. Here, the current and magnetic field from the magnet cause a diaphragm between the two to vibrate, and replicate the sounds that are transformed into electricity.
This also determines the pre-production and your post production workload before the podcast starts. What kind of Microphones to use; There are two types of microphones to consider before you start to record your podcast session. One is a dynamic type microphone and the other is a condenser type microphone. Both are good equipment but one cost less to where the other is more expensive to buy.
Produced sound from speakers has become so common and integrated in our daily lives it is often taken for granted. Living with inventions such as televisions, phones and radios, chances are you rarely ever have days with nothing but natural sounds. Yet, few people know the physics involved in the technology that allows us to listen to music in our living room although the band is miles away. This article will investigate and explain the physics and mechanism behind loudspeakers – both electromagnetic and electrostatic.