What are UltraSonic Waves? Ultrasonic waves are sound waves with frequencies high about human hearing and short wave lengths. Sound waves have frequencies about 20‚000 to 100‚000. Also Ultrasound frequencies range from 20 kHz (the upper range of hearing for a young adult human) through 150 kHz (audible to some bats and other creatures)‚ right up to 10 MHz (used in some medical treatments and industrial cleaning applications). While these frequencies overlap with those of radio waves‚ they are different
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STANDING WAVES A string attached to a turning fork is set vibrating at the same frequency as the tuning fork. The length and tension in the string are adjusted until standing waves are observed on the string. By knowing the tension in the string and the wavelength of the standing waves‚ the frequency of oscillation of the string and thus‚ the tuning fork is found. This value is then compared to a strobelight determination of the frequency. THEORY If transverse waves of constant
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Which was more important in shaping the first wave of globalization; coercive power‚ or technological progress? Technological developments lay the groundwork in shaping the first wave of globalization with Britain as a world leader in trade and economical power‚ but use of coercive power amplified this picture. The first wave of globalization evolved alongside the industrial revolution in Europe during the 19th century until the outbreak of World War one in 1914. In this period‚ Britain stood
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Earthquakes and Seismic Waves Earthquake-is violent shaking of Earth’s crust Focus-exact point within the crust where the fist movement occurs Epicenter-point on Earth’s crust directly above the focus Types of Seismic Waves P Wave Primary-1st Fastest Accordion-in and out S Wave Secondary Snake-like Can’t travel through liquid Surface Wave-roll through the top of the crust creating the most damage Measuring Earthquakes Mercalli scale -measures damage The Richter
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explaining in turn what light and sound are‚ but first we need to know what waves are in order to make it easy to understand the others. Waves exist in both sound and light. Or to make a better sense‚ it is what makes them exist. Waves are vibrations that transfer energy from place to place within a medium. The medium could be solid‚ liquid or gas. It is the medium that vibrates as the waves travel through. There are some waves that don’t need to travel through a substance. They may be able to travel
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The first wave of feminism arose in the nineteenth and early twentieth century.The first wave mainly focused on women’s legal issues especially women’s right to vote. The feminists fighting for the right to vote were mostly made up of two groups‚ the Suffragettes and the Suffragists. The suffragists were quite peaceful in their methods of recognition for women in contrast to the suffragettes who were quite violent‚ radical in their ways created some bad publicity for feminists and in part created
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The Three Big Waves of Feminism First-Wave Feminism: Women’s Right to Vote In 1776‚ the then First Lady of the United States was the first to raise her about women’s rights‚ telling her husband to “remember the ladies” in his drafting of new laws‚ yet it took more than 100 years for men like John Adams to actually do so. With the help of half a dozen determined‚ and in this case white upper-middle-class‚ women the first-wave feminism‚ which spans from the 19th century to the early 20th century
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Charles Jackson Professor Hess Politics and Government Abroad 4/8/2014 Will China be the next Superpower in the next 20 years? For many years now we have projected that since the U.S. got its independence and has been winning wars and gaining more land throughout the years that they would remain the nation that everyone would fear‚ and wouldn’t want to mess with in years to come‚ but the Chinese nations might have something to say about that now has they have been coming up with their strength
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Human civilizations connected more during the third wave than during any other time in human history. The drive to expand empires and explore new regions was aided by advances in technology that allowed for easier travel‚ thus creating more connections between societies. The new ways in which societies connected in the third wave of civilizations include the conquering of environmental road blocks; trade via the Silk‚ Sea‚ and Sand roads; and the link between the societies of Europe and the Americas
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Heat Waves What is heat wave? A heat wave is a prolonged period of excessively hot weather‚ which may be accompanied by high humidity. While definitions vary‚ a heat wave is measured relative to the usual weather in the area and relative to normal temperatures for the season. Temperatures that people from a hotter climate consider normal can be termed a heat wave in a cooler area if they are outside the normal climate pattern for that area. What are the symptoms of heat strokes and sunstroke
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