Electrostatic loudspeakers essays

Electrostatic loudspeakers essays The field theory applies in many principles of technology. From communications and transportation and all the way to entertainment. Today, entertainment is a big part of our lives. It includes roller-coasters, satellites, TVs, sound and much more. Sound, or more specifically speakers, have started from the plain wooden boxes, and have traveled a long way to reach today's technology. Today, speakers are built much stronger, with better designs, and higher capability. As the technology continues to emerge into entertainment, speakers improve and get even better. Today, a few year study and enhancement in technology makes it possible for speakers to reach a new era. A technology still developing has come out with electrostatic loudspeakers (ESLs) which are quite different from the current speakers. Mainly, because they do not use magnets. They use static electricity. But before we step forwards into this new era, lets understand the speakers we use today. These speakers are called electromagnetic speakers. They are built from a plastic cone (usually plastic) which is attached to a metal which is wrapped around with a wire. Around that a magnet is placed. When the music is not playing, the cone stays in place and no sound and is created. When the music is playing, it is converted into electricity and travels through the wire, hence charging it. Because, the charges constantly switch from positive to negative and vice versa, they are pushed back an d forth by the magnet. Because of the movement, sound waves are created. Electrostatic loudspeakers, take a step back from the rules of magnets, and use the most basic laws of physics. Electrostatic loudspeakers are made of three layers. They are made of a coated diaphragm, which is sandwiched by two stators. The diaphragm is one of the three key components of the speaker. It is an extremely thin film (1/10th of human hair) , whose weight is irrelevant. The diaphragm is the reason why ESL s...

Quest and Pursuit

Quest and Pursuit Quest and Pursuit Quest and Pursuit By Maeve Maddox A reader asks,    Whats the difference between Quest and Pursuit?   Under which situation their usage  should be preferred.  Please offer some examples.   Ã‚   On one level, the words are synonyms:    The congressman himself has been fascinatingly silent in pursuit of the nomination.    He had resigned his ambassadorship to return home  in quest of the nomination.    However, the words differ in connotation. In the first example given above, pursuit lacks emotional force. The use of quest in the second sentence implies that the nomination is something the ambassador strongly desires and that he is willing to endure great suffering in order to obtain it.    In the fifteenth century, Sir Thomas Malory and other authors used quest to refer to the noble undertaking of a knight. The knight’s quest might be the rescue of a maiden or the killing of a giant. In Arthurian romance, quest was often associated with the search for the ultimate prize, the Holy Grail. Because of the lingering association with the Grail of Jesus, quest retains a loftier connotation than pursuit.    The word quest can also refer to the particular type of narrative described by Joseph Campbell in The Hero with a Thousand Faces (1949). Examples of the â€Å"quest story† are Gilgamesh, Beowulf, and Star Wars. Here’s Campbell’s definition: A hero ventures forth from the world of common day into a region of supernatural wonder: fabulous forces are there encountered and a decisive victory is won: the hero comes back from this mysterious adventure with the power to bestow boons on his fellow man.    Pursuit, on the other hand, refers to the action of chasing something.    In early use (1387), the purpose of a pursuit was to overtake and capture, harm, or kill the thing being chased. Later, the word acquired the more general sense of simply following or chasing something, not necessarily with the intention to do it harm.    In colloquial speech, we all use quest in contexts that do not involve adventure or the good of our fellow man. Here are typically extravagant uses of quest in mundane contexts:    Yesterday, I went on a  quest  for a  pair of pants  that fit.      Growing the perfect  tomato  is a  quest for  many gardeners.    These theaters in Atlanta lend an epic element to any cinematic night out or quest for summer blockbuster viewing.    Epic is frequently found in the company of the already strong word quest:    Jon Stewart goes on epic quest with a red balloon to prove Dick Cheney wrong on Iran    One female veteran’s epic quest for a ‘foot that fits’    The Greenville Public Schools Board of Education is embarking on an epic quest to find a new superintendent.    I’m home from my first epic quest adventure.  [a restaurant tour]    Preposition use with quest and pursuit can be tricky. One goes â€Å"in quest of justice,† for example, but one is â€Å"on a quest for justice.† Police go â€Å"in pursuit of a criminal,† but they could find themselves â€Å"in pursuit for hours.† Pursuit conveys chasing, searching, or desiring. Quest implies courage, hardship, and altruism. Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Misused Words category, check our popular posts, or choose a related post below:100 Exquisite Adjectives30 Baseball Idioms12 Misunderstood and Misquoted Shakespearean Expressions