The ejected electron is known as a recoil electron which is scattered in the forward direction. The photon has a longer wavelength than the incident photon due to loss of energy. Pair production never occurs in diagnostic radiography but does occur in radiotherapy radiography as the energy required for it to be initiated is 1.02 MeV. This process is inversely proportional to energy. A positron and a negatron are produced; the positron is annihilated when it collides with an electron. Electrons are
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TERRESTRIAL TELEVISION “Digital television is a new television service representing the most significant development in television technology since the advent of color television.” Studente: Francesco Gui (matr.144187) Corso: Telecomunicazioni (a.a.2009/2010) DIGITAL INDEX 1. Technology - The digital signal - Digital television types - Transmission scheme 2. Advantages & Disadvantages - Spectrum reallocation . No Ridondance . Digital Dividend - Interaction - Other advantages - Disadvantages
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The beginning of fluoroscopy can be taken way back in the 90s when there wasn’t much technology. This was all discovered by Rontgen‚ who noticed a fluorescing screen during the exposure to what was later called x-ray. Back then many people where wrong after coming up with conclusions that fluoroscopy would completely replace x-ray after knowing that in fluoroscopy there was movement available in the process. In fluoroscopy‚ a machine is used. One that can use either a continuous beam or it can do
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Bournemouth University Digital Natives and Social Media An Empirical Study about the Importance of Social Media and its Impact on Media Communication Author(s) Prof. Dr. Mike Friedrichsen Stuttgart Media University Media Business and Media Economics friedrichsen@hdm‐stuttgart.de (email for correspondence!) Prof. Dr. Wolfgang Mühl‐Benninghaus Humboldt‐University Berlin Department Cultural Studies/Arts wolfgang.muehl‐benninghaus@rz.hu‐berlin.de 1 Digital Natives and Social Media
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Kodak’s current position in digital imaging is focused on three areas: 1. Image capture (digital cameras) – cameras are still not boosting profits‚ but Kodak has secured 15% of the market‚ and have boosted advertising spending towards s more integrated marketing effort 2. Services (online photo manipulation) - spent significant dollars on R&D developing software 3. Image output (digital kiosks‚ inkjet printers‚ paper and inks) – network of 19‚000 kiosks at retail stores are highly profitable
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Essay One: Annotated Bibliographic Analysis Van Dijck‚ J 2008‚ ‘Digital Photography: Communication‚ Identity‚ Memory’‚ Visual Communication‚ vol. 7‚ no. 1‚ pp. 57-76. In this article Van Dijck discusses how recent technological‚ social‚ and cultural transformations have facilitated an evolution in the role of digital photography‚ commenting on the increasing need for an individual to form a sense of self-identity and to communicate within a public sphere. He argues that memory still reappears
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following advantages of digital photography over basic film photography. Digital photography is gaining in popularity for a ton of reasons simply because it is so versatile for taking all types of pictures. However‚ some of you are still hesitant to make the switch from film to digital. Some reasons to make the switch from film to digital are that the cost is less expensive than film‚ the instant gratification‚ and the built in editing features. Taking pictures with a digital camera is less expensive
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film camera and digital camera. For instance‚ a film-based camera records images directly onto a light-sensitive coated film‚ while a digital camera records images (via an image sensor) onto flash memory cards. A digital camera comes with an LCD display which can be used for viewing images immediately after you have taken the shot‚ whereas for film‚ you have to bring it to a photolab for developing before you can see the picture There are many differences between film and digital photography. To
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Perspective: The Future of Digital versus Print Media with a focus on the cultural products of books and music This thesis identifies two of the major media industries: Books and music and investigates the future of digital media and its implications on the printed media. By Imtiaz Lakhani Supervisor: Assistant Professor Philippe Rouchy Master’s Thesis in Business Administration‚ MBA programme Fall 2010 MBA Thesis 2010 – Author: Imtiaz Lakhani Page 1 of 76 Abstract Digital media has introduced
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Digital Radio — The Sound of the Future Background First there was digital television‚ called "the latest breakthrough in television." Now‚ digital radio is catching on as a popular form of broadcasting. The Federal Communications Commission (FCC) has moved a step closer to bringing digital radio to millions of Americans. What is Digital Radio Digital radio is the transmission and reception of sound that has been processed using technology comparable to that used in compact disc (CD) players
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