Electromagnetic waves in space See the book “Optics” by Hecht sections 3.2 and 3.3 Speed of light: EM waves travel in a vacuum with speed c = c = 299‚792‚458 ms-1 exactly They are transverse waves with (vector) E and B field orthogonal to each other‚ for this section bold indicates vector quanties. When far from the source (many wavelengths) the E and B fields are in phase The vector E x B points in the direction of motion Travelling waves can be written as E = E 0 ⋅ ei ( kx −ωt ) and B = B 0 ⋅ ei
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marriage in Property‚ by Valerie Martin is ultimately connected with the institution of slavery in America. The aristocratic life of the early 19th century is defined in the use of these themes through the pictures they create. Not only do the themes cause the novel to become so gripping‚ but the characters help in the suspense as well. Each character is presented to be believable and very developed‚ adding to the excellent sense of reality that the novel gives off overall. Property captivates its
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PHY 101 Lab Report Waves Lab Purpose The purpose of this laboratory experiment is to “investigate how the vibrating source affects selected characteristics of the sound produced” (Giancoli‚ 2006). Materials The following materials were used in the completion of this laboratory experiment: * Meter stick * Two paper towel rolls / cardboard tubes * Scissors * Two rubber bands * Wax paper * Transparent tape * Flashlight * Balloon Procedure Part 1:
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WAVES OF MIGRATION 1. The Negritos * first people to come to the Philippines * also called Atis or Aetas * They came across land bridges from mainland Asia about 25‚000 years ago. * Philippines then‚ was connected to Asia by land bridges which later sank below the sea * very small people‚ less than 5 feet tall * Were called "Negritos" because they had black skin‚ short kinky hair‚ thick lips‚ and black noses. * they wore little
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seven different waves. The waves are in the order of how big the wavelength is and its frequency‚ from the biggest to the smallest: Radio waves‚ Micro waves‚ Infrared‚ Visible light‚ Ultra Violet‚ X-rays and Gamma rays. Each of them has their own special use in everyday life. For example‚ to turn on a TV you need to use Radio waves‚ to heat your food you use Microwaves and X-rays are used to look into people’s bodies. Some waves‚ like Radio waves can be as big as a building or waves like Gamma rays
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Alpha waves are regular‚ have medium frequency‚ and occur while resting. Beta waves are irregular‚ have a low amplitude‚ and occur while attentive. In stage one of the sleep cycle‚ we experience Theta waves‚ which have similar frequencies and regularity to Alpha waves. Stage two also involves Theta waves‚ but may also have short bursts of Alpha and Beta waves called sleep spindles‚ or Delta waves called k complexes. These are the two shallowest sleep
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conditions Technological change (ex. telephone‚ internet) Input price volatility (ex. oil industry) Legal and regulatory changes (ex. deregulation) Financing innovations (ex. junk bonds) That do not mean that all economic growth period has merger wave. In recession period‚ documents shows that never happened. When will be the next one ? Common caracteritic that show history -Boom of financial market (stock market) -Availibility of cash is an important‚ but not all merger are based on cash
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Seismic Waves What are seismic waves? Seismic waves are the waves of energy caused by breaking of rock within the earth or an explosion. These waves are the energy that travels through the earth and is recorded on seismographs. There are many different types of these waves‚ but the two main ones are the body waves that usually travel though in inner layer of the earth‚ and the surface waves that only move around the surface of the planet. Body waves travel through the inner layer of the earth
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Katsushika Hokusai. The Great Wave off Kanagawa from Thirty-Six Views of Mount Fuji. c. 1831. Polychrome woodblock print on paper‚ 9 7/8” x 14 5/8” (25 x 37.1 cm). Hokusai’s The Great Wave off Kanagawa is a woodblock print that was published around 1831‚ and it is one of the most iconic Japanese works of art in the world. It depicts a colossal wave about to come crashing down on three fishing boats‚ or oshiokuri-bune—Japanese fishing boats that are known for their speed (Cartwright and Nakamura)
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First of all‚ tide is the rise and fall of water caused by gravitational forces of the moon and sun on the oceans of the earth. Generally speaking‚ tidal cycles contain two high tides and two low tides each day. During the time between high and low tides there will obviously be current flow. The time between high and low tides is a little over 6 hours and the entire tidal cycle repeats itself approximately fifty minutes later each day. So if you know that low tide is at 0800 today you can estimate
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