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Silence Resonance

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About Silence Resonance

  • Rank
  • Birthday 02/17/1990

Profile Information

  • Location
    Cairo, Egypt
  • Interests
    Drawing , Science Fiction , Poetry , Networking ... ask me
  • College Major/Degree
  • Favorite Area of Science
    Physics , Electronic Engineering , VLSI , IC technology , Digital & Logic Gates ....
  • Biography
    Smart , sophisticated , visionary , different ....ask me ;)
  • Occupation
    Student in Military Technical College

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  • Skype
  1. Martin Cooper – The Father of Mobile Phone Martin Cooper CEans, He changed the world of communications forever. His invention in 1970s helps you keep in touch with your near & dear ones no matter where you are. This MENSA International member is also the pioneer of portable hand-held police radio. His ideas helped Motorola mass-produce the first crystals for use in wrist watches. He's the one & only Mr. Martin Cooper – The Father Of Mobile Phone. Mr. Cooper is the CEO, Founder of ArrayComm & former Vice President Of Motorola Corporation. In our Special Anniversary Edition Small Talk Mr. Cooper shares the story of the invention of Mobile Phone and the first ever call made on Cell Phone- CEan The_Big_K: Sir, your inventions have changed the world and you haven't stopped! How's the journey in the hindsight? Mr. Cooper: I can't think of anything that I would change in the journey. I have been blessed with extraordinary leaders and colleagues and have been lucky in more ways than I deserve. There have been numerous failures along the way but I hope that I have learned from them. What I have learned most of all, is that the only purpose for technology is improving the lives of people. CEan AbraKadabra: Tell us the story of your first mobile call to Mr. Joel Engel, Bell Labs Research Head. Mr. Cooper: The context of that first public cellular telephone call was the battle between AT&T, the largest company in the world, and Motorola, a little company in Chicago. AT&T had approached our government for an exclusivity license for radio frequency spectrum to commercialize their invention of cellular technology. AT&T planned to make a cellular car telephone service. We, at Motorola, believed in a competitive market place and were convinced that the time was ready for personal hand-held telephones-not car phones. AT&T had hundreds of lobbyists in Washington; we had three. We had to do something dazzling and building a working system was my way of doing that. Well who would I call but the head of the engineering program at AT&T? Although Joel was very respectable during our call, he believed then, and continues to believe today, that Motorola was an annoying impediment to their program. CE: Could you tell us a bit about the configuration of the first cell phone? Mr. Cooper: The DynaTAC weighed 2 and a half pounds, over a kilo, and had a battery life of 20 minutes. Pictures of the phone are attached. It was about 10 inches high 4 inches deep intuitive wide. It contains thousands of electronic components, most of which are no longer used today. There were no computers or large scale integrated circuits available in 1973 with which to miniaturize the DynaTAC. CEan The_Big_K: If you could change one thing from the first cell phone, what would it be? Mr. Cooper: Why even think about changing something that was so successful? The basic design of the DynaTAC continue to evolve for 15 years. CEan Durga: What technology available then made you think "This is difficult, but not impossible?" Mr. Cooper: Motorola was deeply involved in personal communications starting in World War II but peaking in the 1960s and beyond. Our research labs were continuously pushing the state-of-the-art in low drain semiconductors, spectrum efficiency, portable antennas, frequency synthesizers, etc. We knew the phone could be built and we did it. We not only had to make a handset, but a base station, the control circuitry, and we needed installation people, public relations experts, lawyers, and lots of other help to make a successful. CEan Cooldudeiet: What were the major challenges your team faced while working on the project? Mr. Cooper: The fact that we had only three months to build the phone was the biggest challenge. People worked day and night to complete the phone and the system. CEan Musicfreakmandy: What cell phone do you currently use? Mr. Cooper: I now use a Motorola Droid X but I change phones every six months so I can understand the latest technologies. CEan Optimystix: What are the latest developments in this field that you appreciate the most? Mr. Cooper: the implications of wireless technology on medicine and on social networking are going to be huge. The whole nature of medicine is going to change from curing disease to preventing disease. Social networking in the enterprise is going to revolutionize the way we run companies and solve problems. The focus of all of this is personal communications. CEan AbraKadabra: Your Company, ArrayComm does research about the smart antenna technology. Where is this headed to? Mr. Cooper: without smart antenna technology, better known as Multi-Antenna Signal Processing (MAS) there will not be enough radio frequency spectrum to do all of the wonderful things that we foresee in the future. All of the new generation cellular technologies will use smart antennas. CE: What will be your message to CEans? Mr. Cooper: Reach out! Do not fear failure. *******************************************
  2. Sometimes people tell me they can't do any science projects because they don't have any chemicals. There are some activities that don't require any chemicals you don't already have. A great example is invisible ink. Invisible ink is any substance that you can use to write a message that is invisible until the ink is revealed. You use the ink by writing your message with it using a cotton swab, dampened finger, fountain pen, or toothpick. Let the message dry. You may want to write a normal message on the paper so that it doesn't appear to be blank and meaningless. If you write a cover message, use a ballpoint pen, pencil, or crayon, since fountain pen ink could run into your invisible ink. Avoid using lined paper to write your invisible message, for the same reason. How you reveal the message depends on the ink you used. Most invisible inks are made visible by heating the paper. Ironing the paper or holding it over a 100-watt bulb are easy ways to reveal these types of messages. Some messages are developed by spraying or wiping the paper with a second chemical. Other messages are revealed by shining an ultraviolet light on the paper. Make Invisible Ink Anyone can write an invisible message, assuming you have paper, because body fluids can be used as invisible ink. If you don't feel like collecting urine, here are some alternatives: Heat-Activated Invisible Inks Iron the paper, set it on a radiator, place it in an oven (set lower than 450° F), hold it up to a hot light bulb. any acidic fruit juice (e.g., lemon, apple, or orange juice) onion juice baking soda (sodium bicarbonate) vinegar white wine dilute cola diluted honey milk soapy water sucrose (table sugar) solution urine Inks Developed by Chemical Reactions These inks are sneakier, because you have to know how to reveal them. Most of them work using pH indicators, so when it doubt, paint or spray a suspected message with a base (like sodium carbonate solution) or an acid (like lemon juice). Some of these inks will reveal their message when heated (e.g., vinegar). phenolphthalein (pH indicator), developed by ammonia fumes or sodium carbonate (or another base) thymolphthalein, developed by ammonia fumes or sodium carbonate (or another base) vinegar or dilute acetic acid, developed by red cabbage water ammonia, developed by red cabbage water sodium bicarbonate (baking soda), developed by grape juice sodium chloride (table salt), developed by silver nitrate copper sulfate, developed by sodium iodide, sodium carbonate, potassium ferricyanide, or ammonium hydroxide lead(II) nitrate, developed by sodium iodide iron sulfate, developed by sodium carbonate, sodium sulfide, or potassium ferricyanide cobalt chloride, developed by potassium ferricyanide starch (e.g., corn starch or potato starch), developed by iodine solution lemon juice, developed by iodine solution Inks Developed by Ultraviolet Light (Black Light) Most of the inks that become visible when you shine a black light on them also would become visible if you heated the paper. Glow-in-the-dark stuff is still cool. Here are some chemicals to try: dilute laundry detergent (the bluing agent glows) body fluids tonic water (quinine glows) vitamin B-12 dissolved in vinegar Any chemical that weakens the structure of paper can be used as an invisible ink, so you might find it fun to discover other inks around your home or lab. source : chemistry.about.com
  3. I hope to know your opinion . If you want to add , post a reply here. Here is the poll link : http://www.polljunki.../Poll10500.aspx And here are the results ; http://www.polljunki.../View10500.aspx
  4. A study by the University of the Basque Country (UPV/EHU) has carried out the first Spanish study into the emotional differences between the sexes and generations in terms of forgiveness. According to the study, parents forgive more than children, while women are better at forgiving than men. "This study has great application for teaching values, because it shows us what reasons people have for forgiving men and women, and the popular conception of forgiveness", Maite Garaigordobil, co-author of the study and a senior professor at the Psychology Faculty of the UPV, tells SINC. This study, which has been published in the Revista Latinoamericana de Psicología, is the first to have been carried out in Spain. It shows that parents find it easier to forgive than their children, and that women are better at forgiving than men. "A decisive factor in the capacity to forgive is empathy, and women have a greater empathetic capacity than males", Carmen Maganto, co-author of the study and a tenured professor at the Psychology Faculty of the UPV, tells SINC. The results, which were measured using a scale to assess the ability to forgive (CAPER), and a scale of forgiveness and facilitating factors (ESPER), show that there are differences in the reasons that encourage forgiveness according to people's age and sex. What drives forgiveness? Children believe that "one forgives with time", while parents point to reasons such as "remorsefulness and forgiving the other person" and "legal justice". The authors of this study say that parents who have forgiven most over the course of their lives have an increased capacity to forgive "in all areas". Parents and children use similar definitions of forgiveness. Not bearing a grudge, reconciliation and understanding-empathy are the terms most used by both groups to define forgiveness. However, there are greater differences between men and women. Both see "not bearing a grudge" as the best definition of forgiveness, but men place greater importance on this characteristic. Lack of bitterness is the key The study, which was carried out with the collaboration of 140 participants (parents and children aged between 45 and 60, and 17 and 25, respectively), highlights two key conditions for a person to be forgiven. One is for them to "show remorse" and the second is for the person who has been offended "not to bear a grudge". The experts say the family environment plays a key role in transmitting ethical values. "This result is especially interesting in situations where families are in crisis and no basic education can be expected of them in terms of values. This education is largely transferred to the school", the researchers explain. The research "opens up many new questions" for the two investigators, who believe it is "necessary to study the role that forgiveness plays in psychological treatment, especially among victims of sexual abuse, physical and psychological maltreatment and marital infidelity, as well as other situations". Source: FECYT - Spanish Foundation for Science and Technology
  5. Understanding and managing how humans and nature sustainably coexist is now so sweeping and lightning fast that it's spawned a concept to be unveiled at a major scientific conference today. Meet "telecoupling." Joining its popular cousins telecommuting and television, telecoupling is the way Jack Liu, director of the Human-Nature Lab/Center for Systems Integration and Sustainability at Michigan State University, is describing how distance is shrinking and connections are strengthening between nature and humans. The "Telecoupling" of Human and Natural Systems" symposium will be 1:30-4:30 p.m. Friday, Feb. 18, at the American Association for the Advancement of Science (AAAS) annual meeting here. "This is a beginning of exploring the new frontier," said Liu, who holds the Rachel Carson Chair in Sustainability. "Telecoupling is about connecting both human and natural systems across boundaries. There are new and faster ways of connecting the whole planet – from big events like earthquakes and floods to tourism, trade, migration, pollution, climate change, flows of information and financial capital, and invasion of animal and plant species." The prefix "tele" means "at a distance" (so, television literally means viewing at a distance). Liu explains that telecoupling is a way to express one of the often-overwhelming consequences of globalization – the way an event or phenomenon in one corner of the world can have an impact far away. In effect, systems couple – connecting across space and time. Increased trade, expanding transportation networks, the Internet, invasive species – all have made everything seem closer. That has enormous consequences for environmental and socioeconomic sustainability. Thomas Baerwald, National Science Foundation (NSF) program director, observes that traditional analyses in the natural and social sciences presumed that many phenomena were predominantly the product of local conditions and processes. "While local factors remain significant," Baerwald said, "the researchers participating in this symposium will highlight ways in which geographic scales of interaction have changed significantly in recent decades. NSF and the research community now are exploring these new dynamics in order to enhance basic understanding and consider ways to enhance the lives of people and the environment we inhabit." World-renowned experts in diverse disciplines, including five members of the National Academy of Sciences, will present at the symposium: Ruth DeFries, Columbia University Tropical Deforestation Driven by Urbanization and Agricultural Trade Eric F. Lambin, University of Louvain, Belgium; and Stanford University Land-Use Changes in the Globalization Era Jack Liu, Michigan State University Global Telecoupling of Remote Places William D. Nordhaus, Yale University Integrated Assessment Models in Economics and the Geosciences Peter Raven, Missouri Botanical Garden Biological Invasions Elevating Ecological and Socioeconomic Challenges Peter Gleick, Pacific Institute for Studies in Development, Environment, and Security Peak Water, Virtual Water, Real Water: Exploring the Connections Liu and Bill McConnell, co-director of the Human-Nature Lab, are co-organizers of the symposium together with Baerwald. Thomas Dietz, assistant vice president for environmental research at MSU and a sociologist, is the discussant. "As the Earth becomes smaller and smaller, telecoupling has increasingly important implications at the global level," Liu said. "The current management of natural resources or governance systems will not work well. We need to have new ways to understand and manage coupled human and natural systems (CHANS) worldwide." In that vein, Liu leads CHANS-Net: Human-Nature Network, an international network of research on coupled human and natural systems (CHANS). It facilitates communication and collaboration among scholars from around the world interested in coupled human and natural systems and strive to find sustainable solutions that both benefit the environment and enable people to thrive. It is funded by the NSF. Several other sessions on CHANS are also held at the AAAS meeting. Source: Michigan State University

    1. new_mohandsa


      what will happen after that happened yesterday.. it is a disaster it is tooooooooooooo late to say that

    2. ajb


      Worrying time in North Africa. I just hope that Muslim extremists don't get a political foothold in North Africa.

    3. Sand Grain

      Sand Grain

      my dear Egypt :(

      that guy is in control for 30 years, as an egyptian im sooooo fed up! :/


  8. When you look at a clock and its hands are turning to the right you say this is clockwise. From the clock's perspective though, its hands are turning counterclockwise. Why?
  9. Hi I'm Isso .. I'm a student in the Military Technical Academy in Egypt .. I'm fond of being different at anything .. You can say I'm a very big question mark .. btw i like drawing and i write poetry ..
  10. Palindromes are cool but sometimes lack enough clearance to give understood meanings..
  11. Here's the list of most amazing natural phenomenon in the world. As We know, There's a lot of natural phenomenon happen around us. But I guess We're sometime still says that some natural phenomenons is amazing. So here's the natural phenomenon happen around the world and I guess You will say It's the most amazing natural phenomenon around the world. 10. Ice Circles Ice circle is extremely rare phenomenon happen in cold water. The great circle can be found in Scandinavian and North America, and the latest one happen in the UK, in January 2009. Ice Circles 9. Red Tides A natural phenomena occurs because gathering of microorganisms in the coastal area from the mouth water, sea or river water and make the water purple and red. Red Tides 8. Columnar Basalt Rock formations that formed due to the eruption of lava that get cold. Basalt headliner in the world located in the Giant's Causeway in Northern Ireland. Columnar Basalt 7. Sun Dogs The phenomenon where there are 3 suns in the horizon. Sun Dogs 6. Moeraki Boulders Round stones at the beach, formed by waves, located at Koekohe Beach. Moeraki Boulders 5. Penitentes Natural phenomena that happen only in places between Chile and Argentina. It's a phenomena of snow in the high surface that pointed. It's caused by strong wind in the Andes mountains. Penitentes 4. Light Pillars Visual phenomena created by the reflection of light. Light Pillars 3. Catatumbo Lightning Venezuelan call this mysterious lightning Relampago del Catatumbo or Catatumbo lightning. Location of lightning at the mouth of the river Catatumbo in lake Maracaribo, Venezuela. Lightning is a great grab by 5 km high. Occurs 140 times even 160 times during the night in 1 year. Each evening bolt occurred during 10 hours. Every hour there is as many as 280 times bolt. So in a year approximately 448,000 times bolt! Lightning occurs because the collision of the winds originating from the Andes. Some people said that this lightning is the largest ozone layer former on earth. Catatumbo Lightning 2. Cave of the Crystals Cave that containing crystal located at the mining sites in Chihuahua, Mexico Cave of the Crystals 1. Pink and White Terraces Natural Wonders from New Zealand that just memories because destroyed by the Tarawera volcanic eruption in 1886. The natural phenomenon of warm water that formed by geysers that blast down the hillside across the thickness of ice left, the largest pool of warm water was recorded around 3 acres. Before the destruction of this phenomenon, It belongs to " The Eighth Wonder of the World ". Pink Terrace white terrace
  12. How mysterious your are , Mind .. I'm searching for a key ..

  13. How mysterious your are , Mind .. I'm searching for a key ..

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