Microwave Ovens :: essays research papers

Microwaves are low on the electromagnetic spectrum. The electromagnetic spectrum is a range of all the possible electric radiation. Frequency of a wave is the number of waves per second and the frequency of a microwave is between 300 MHz and 300 GHz. The wavelength of a wave is the distance from one peak of a wave to the peak of a following wave and a wavelength of a microwave varies from one millimeter to thirty centimeters. The frequencies range from ultra high frequency to super high frequency to extremely high frequency. The microwave was discovered by Heinrich Hertz and predicted by James Clerk Maxwell. In 1864, James Clerk Maxwell theorized about microwaves until he predicted equations that would prove the existence of microwaves. In 1888, Heinrich Hertz took these equations and used them in an experiment. He made an apparatus that produced waves and detected these waves. The experiment displayed the different wavelengths of certain waves, such as the short wavelength of microw aves. The discovery of microwaves permitted it to be used for commercial purposes. Microwave ovens are the best example of a commercial usage of microwaves. Microwave ovens use microwaves at a frequency of 2450 MHz. The Microwaves travel and cause the water, fat, and sugars to vibrate resulting in the food’s temperature rising. This type of energy is called Dielectric energy. This benefits the food making process and anyone who buys TV dinners. Another instance of microwaves is cell phones. Cell phones use an antenna and a little transmitter to connect to the microwaves emitted in the air. To make cell phones more attractive for buyers, they minimized the transmitters and antennas. The microwaves used in phones make it possible for a person to receive calls from any location, this is especially important in emergencies. Broadcasting transmissions, such as cable TV and the Internet, use microwaves to transmit the signal in order to broadcast. These two sources that use microwaves permit faster communication between all areas of the world. These two sources th at use microwaves are the most popular ways of entertainment for most of the United States. The commercial industry benefits from these products that use microwaves. Current studies prove indecisive about the effects of microwaves. Microwave ovens can cause damage to the eyes. If a person were to press their face on the microwave oven, it can cause cataracts in the eyes. The best advice to protect against this effect is to stay a couple feet away according to Dr.

Pancho Villa

In the early morning of March 9, 1916, Pancho Villa crossed the U. S. border and into history. On that day, Villa launched the first attack on American soil since the War of 1812, killing 18 Americans and leaving the small New Mexican town of Columbus in flames. Among the dead was one-time Las Crucen Charles D. Miller, a 1906 graduate of the New Mexico College of Agriculture and Mechanic Arts and brother of college registrar 1. 0. Miller. When the unidentified body was removed from the ruins of the hotel, his Masonic ring was recognized by a Mason in the rescue party and was found to be engraved n the inside with Miller's name,† the Rio Grande Republican reported. Much of the town turned out for his funeral at the Masonic cemetery in Las Cruces. His death and the raid on the fellow border town shocked Las Cruces, though many of its citizens and college students had actively served along the border in the National Guard as civil war raged in Mexico.It was Just one of several con nections Las Cruces had with the Mexican Revolution and Pancho Villa, who is the focus of a new exhibit at the Branigan Cultural Center. James Hester, a professor emeritus of anthropology at the University of Colorado, will ick off the photo exhibit this Saturday with a talk about Villa at the cultural center, which will also present a special showing of a Villa documentary on March 9. Cruces connection Almost a hundred years after the raid, Villa remains a controversial and complicated fgure. A state nature park near Columbus even bears his name, despite the brutal raid on the town. The raid wasn't the first time Las Cruces telt the impact ot the Mexican Revolution that nad start up Just as New Mexico was finally becoming a state. In late 1911, the one-time-bandit-turned-revolutionary had sided with newly elected resident Francisco Madero. By the following spring, anti-Madero forces led by a disgruntled Gen. Pasqual Orozco had captured most of Chihuahua, except for the city of Parr al still held by Villa.Among Villa's troops was the Mesilla-born Thomas Fountain, the son of Col. Albert J. Fountain, one of the Mesilla Valley's most important 19th century figures, who was murdered along with his 9-year old son Henry in 1896. Thomas, whose mother had deep family ties in Chihuahua, was one of hundreds of â€Å"foreign† fghters and mercenaries who'd Joined the charismatic revolutionary Villa. That group also included one of the valley's more unusual new immigrants, former Boer War leader Benjamin VilJoen of South Africa, who Joined with Madero as a military advisor.In early April 1912, Orozco's forces were close to taking Parral, and were trying to place a cannon on a strategically vital point overlooking the city. But Fountain, manning a machine gun, single-handedly thwarted their efforts. The Villistas were forced from the city two days later, yet Fountain remained behind in his adopted hometown and was captured. Bad for business Though American diplomatic efforts initially stopped his execution, the Rio Grande Republican reported Fountain's captors allowed him to flee, under the dubious â€Å"law of flight,† only to shoot him in the back in the streets of Parral.His killing made national headlines and outraged Americans, among them one of New Mexico's first senators, Albert Fall, who had a complicated relationship not only with Villa and the Mexican revolution, but the Fountain family as well. As a new senator, the bilingual Fall put himself forward as an expert on Mexico, ultimately heading up the Senate subcommittee on Mexican affairs. Fall had been a long-time bitter foe of Thomas' father, and in 1898 had successfully efended the men accused of his murder. At the urging ot Thomas' brother, Albert, Fall t accountability for the execution. d to get some kind ot Fall, who'd started his legal career in Las Cruces, was among other locals with extensive business dealings in Mexico that were threatened by the continued political i nstability. Eugene Van Patten, a former county sheriff, â€Å"Indian fighter,† and co-founder of the local New Mexico Militia, owned the Dripping Springs resort where Villa reportedly visited at least once. In 1914, the Rio Grande Republican reported Van Patten and county assessor Duara Peacock secured a valuable contract to buy seized Mexican cotton directly from Villa.Another account reports Van Patten met with Villa in Juarez that same year to urge the release of an American-born prisoner Pedro Chaves, the son of wealthy Albuquerque wool merchant Amado Chaves. From hero to villain Any friendly relations with Villa, who many along the America border saw as a sort of revolutionary folk hero, evaporated with the raid on Columbus. The motivations behind the raid remain unclear. After the assassination of Modero in 1913, Villa initially won battlefield victories in orthern Mexico.But by 1916, he was mostly on the run, with the U. S. government supporting his foe, interim presid ent Venustiano Carranza. Some believe Villa needed the weaponry and supplies he knew were held in Columbus by a small contingent of the 13th U. S. Cavalry. His forces did seize horses and supplies, and at least 80 were killed in the one-hour attack. A half dozen Villistas were captured and executed in Deming in June 1916, and a large American expeditionary force led by Gen. John J. Pershing was soon in Mexico searching for the elusive Villa.The college newspaper the Round Up reported many of its students were among that force, which at different times based itself in or near Las Cruces. â€Å"Scores of Aggies, alumni, and old students (have) responded to the call. The plow, hoe, the slide rule and transit, were laid aside, the khaki was donned and with gun and bayonet they went forth to keep Pancho Villa on his own side of the line,† the paper reported Villa remained out of the hands of Pershing, who by early 1917 was heading over to Europe with America's entry into World War l, where some of those same Aggies would serve and die.

The Use of Art by Those in Power - 602 Words

Art has more meaning behind it than just being a picture; it can function in society by symbolizing power. In this essay I am going to discuss in what ways art communicates power and help to manage nations and empires. The use of art as a tool for those in power started in different times and also in different cultures. An ancient gravesite near Stonehenge revealed the grave of the Amesbury Arche in 2002 his grave was different to those previously found near the site, What made him interesting was the gold hair tresses, which are the oldest cast of gold in Britain, and the fact that he was a from the region that is now Germany. The treasures in his grave show a man of status. Art for personal appearance, like these hair clasps, mad him have a higher status then his peers. This gold, created the image of a leader. So it was learned early on in human history that art as personal appearance enhanced your status. As time progressed, in other parts of the ancient world art became a political tool; kings competed for more dazzling adornments for their appearances. As kingdoms began to become bigger the kings started to face communication issues and Darius the Great of Persia was one of them, he ruled over 20 nations from Persepolis. As many people from his nation could not read, Darius then had stone reliefs created that combined styles from all over the empire, these carvings showed each nation bring tributes to their king. These cravings showed a sign of respect and theseShow MoreRelatedFra Angelico’s Coronation of the Virgin: Art Use during the Renaissance: 1344 Words   |  6 PagesThe Renaissance was a movement that began in Italy with the purpose of reviving classical sources and breathing new life into them. Art specifically, would forever change, setting the stage for distinct and innovative art styles and ideas. Fra Angelico’s Coronation of the Virgin (Figure 1) and othe r forms of religious artwork from Renaissance Europe, although sometimes varying in interpretation, were created in order to bring social divisions together under the protection of the ecclesiastical hierarchyRead MoreThe Momoyama Period : A Turning Point Between The Middle Ages1576 Words   |  7 Pagesperiod, in the late 15th century. During the Muromachi period, Japan was experiencing violent conflicts over territory and power. In 1573 Oda Nobunaga became the ruler and with him was the birth of the short-lived Momoyama period; only three warlords seized power during that time . Even though, the Momoyama was a brief period between two major eras, it had a lot of impacts on art and architecture. One of the greatest painters of this period was Kano Eitoku. He was described as â€Å"the most celebrated painterRead MoreThe On Art World And Class Structure1648 Words   |  7 Pagesthat economic power affect art. By voluntary means, we produce, trade, buy and sell our products that w ould benefit us in various ways. Economic power allows people to exploit their resources in a free market. It has the ability to help others successfully reach prosperity. Some philosophers claim economic power has a huge impact on art, whereas other philosophers express a different opinion. Davis and Freeland believes economic power influences art, but Todd disagrees. 9.5 Theses on Art and ClassRead MoreJohn Berger and History1537 Words   |  7 PagesWays of Seeing, John Berger claims that all power, authority, and meaning that was once held by an original work of art has been lost through the mass reproduction of these works that has occurred in recent years. He writes of an entirely bogus religiosity (116-117) that surrounds these art objects and that the meaning of the original work no longer lies in what it uniquely says but in what it uniquely is (117). He claims that because of reproduction, the art of the past no longer exists as it once didRead MoreThe Baroque Era848 Words   |  4 Pagesutilize Baroque art as an instrument for their own Counter Reformation. In this essay, the unique style and various types of Baroque art are argued to be an essential component in the success of the Counter Reformation. The Roman Catholic Church decided that in order to attract less educated people, biblical art had to be more attractive and emotional. The very essence of Baroque art is its realism, focus on expressionism and movement. The Church expanded upon the grandeur sense of Baroque art by producingRead MoreThe Scourging of Christ, Giulio Cesare Procaccini Essay1083 Words   |  5 Pages Upon walking into Gallery 250 of Bostons Museum of Fine Arts, one will find on the wall a particularly eye-catching piece of art. The piece, set high on the corner of the wall encompassed by pictures depicting scenes from the life of Jesus Christ, is Giulio Cesare Procaccinis The Scourging of Christ. In this piece, Procaccinis masterful use of light and shadows in a technique called chiaroscuro dramatically portray the torturing of Christ, and it is this very application of chiaroscuro that immediatelyRead MoreThe Use Of Art, Sculptures And Architecture1559 Words   |  7 Pages The Use of Art, Sculptures a nd Architecture There is many variations of art nowadays, when one thinks of art they think about Michelangelo, Van Gogh, or Picasso. But, religion has a great influence on the art scene. Religions use art to emphasise their faith and its importance. Christianity art is solely based upon Jesus, his followers and saints. Throughout history Christian art has been connected to mainstream idea of art. However, there are several other religions that demonstrate their faithRead MoreAn Analysis Of Theodora And Attendants And Akhenaton, Nefertiti, And Three Daughters1180 Words   |  5 PagesThe theme of the two art works, â€Å"Theodora and Attendants,† and â€Å"Akhenaton, Nefertiti, and Three Daughters,† is Political Authority. This is a theme presented countless times throughout art history, and is a theme that is still used in art today. It reflects the concerns and desires of the rulers of the time and is used as a form of propaganda by said rulers to change the minds of the people t hey are ruling. Art has power and the rulers use its power to control their people. The presentation of theseRead MoreEssay on Once Upon a Times: Art of the Himalayan Region1531 Words   |  7 PagesArt was largely used to express traditions in the Himalayan region. The use of paintings was vital in reflecting a great deal of narratives as indicated by exhibit ‘Once Upon Many Times’ literary works. Works of art, especially paintings, can also be used to analyze and comprehensively describe a picture of the lifestyle of a people from different times in history from their social organizations, economic life and religious views and practices. Thus, this analytical research paper attempts to compareRead MoreConcept Of Operational Art As A Cognitive Process1538 Words   |  7 PagesOperational art implies that war is the use of military force to achieve a strategic political goal, and that warfare is the methodology in which the government employs its military force to ach ieve that goal. The concept of operational art as a cognitive process to align actions in space and time is critical to understanding its relationship to war and warfare. As a cognitive process, its strengths and weaknesses derive from the human element. Historical examples demonstrate that those who have the