inexpensive‚andsafesoisoftenthefirstchoiceof a medical imaging method where feasible Sound waves • Sound wave propagate by longitudinal motion (compression/expansion)‚ but not transverse motion (side-to-side) • Can be modeled as weights connected by springs 1Ultrasonic Waves and properties • Mechanical waves are longitudinal compression waves • “Ultrasound” refers to frequencies greater than 20kHz‚ the limit of human
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Radio Waves In the modern society‚ radio is the most widely used medium of broadcasting and electronic communication : it plays a major role in many areas such as public safety‚ industrial manufacturing‚ processing‚ agriculture‚ transportation‚ entertainment‚ national defense‚ space travel‚ overseas communication‚ news reporting and weather forecasting. In radio broadcasts‚ they use the radio waves which can be both microwaves and longer radio waves. These are transmitted in two ways: amplitude
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Electromagnetic waves are radiated energy of all different strengths. They’re different from sound waves and water waves because they have the ability to travel through empty space. A vacuum. These are the only types of waves that do not need any type of medium because of photons. Photons are tiny particles that don’t get traveled through‚ but make up electromagnetic waves. Photons travel with the wave at about 300‚000 k/s. also known as the speed of light. The more energy the photons have‚ the brighter
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A friend once told me that he was “living the Dream”. But what exactly is “the Dream”? Now the Dream to my friend may have been waking up late down at the beach‚ partying all night with girls‚ living without a care in the world‚ but nevertheless it was still “living the dream” to him. We all having different perceptions of what “the Dream” really is. Of course my friends dream would differ greatly from‚ let’s say‚ my fathers dream‚ or Tiger Woods dream for instance. That’s the beauty of living
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think of Elisabeth Griscom Ross‚ also known as Betsy Ross‚ they think of the woman who came up with the design for and then sewed the first American flag. Many Americans believe that she sewed the first American flag under the direction of President George Washington‚ but historians are now saying this is likely untrue and was made up by her grandson over one hundred years after the first flag was sewn. Since this story is likely untrue should Americans still revere Betsy Ross as a significant hero
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WAVE ENERGY Chapter 2: Energy Technology 2.1 Source of Wave Energy Ocean waves are caused by the wind as it blows across the open expanse of water‚ the gravitational pull from the sun and moon‚ and changes in atmospheric pressure‚ earthquakes etc. Waves created by the wind are the most common waves and the waves relevant for most wave energy technology. Wave energy conversion takes advantage of the ocean waves caused primarily by the interaction of winds with the ocean surface. Wave energy is
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Being a bright student will help you accomplish anything in the near future. It’s important to be a successful student‚ so in order to get a good education one must stay organized‚ study‚ and never give up. It takes dedication to become a successful student but in the end it is all worth it. Being organized is very important if you want to succeed in school‚ never procrastinate‚ have an agenda‚ and doing your homework are a part of being organized. Procrastinating is the #1 curse of all students
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object that is struck with a sound wave of equal sound wave vibrations will amplitude the given tone. This would explain the reason why some singers are able to break wine glasses with their voice. The vibrations build up enough to shatter the glass. This is called RESONANCE. Resonance can be observed on a tube with one end open. Musical tones can be produces by vibrating columns of air. When air is blown across the top of the open end of a tube‚ a wave compression passes along the tube
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century. Perhaps Richard’s most prolific moment while in power was the Third Crusade. Along with with Philip II of France and Germany’s King‚ Emperor Frederick I‚ Richard fought against Saladin and his army in an attempt to reconquer the Holy Land. Saladin was the leader of the Muslim Army and led the resistance against the Crusaders. Although they were not able to capture Jerusalem‚ the crusade was still partially successful. Richard was able to capture the cities of Jaffa and Acre‚ along with signing
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important to learn from your mistakes and to use them as building blocks to future success. I learned how failure can lead to future success when I did not accomplish my biggest goal during my sophomore season of cross country. I had found success throughout the whole season and my goal was set at the last three races of the season. The success in the season was fun but my failure in the end of the season was the most memorable and ultimately is what I learned from the most. My sophomore year of cross
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