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Eric Weisstein's World of Physics

Eric Weisstein's World of Physics
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Einstein for Everyone Einstein for Everyone Nullarbor Press 2007revisions 2008, 2010, 2011, 2012, 2013 Copyright 2007, 2008, 2010, 2011, 2012, 2013 John D. Norton Published by Nullarbor Press, 500 Fifth Avenue, Pittsburgh, Pennsylvania 15260 with offices in Liberty Ave., Pittsburgh, Pennsylvania, 15222 All Rights Reserved John D. An advanced sequel is planned in this series:Einstein for Almost Everyone 2 4 6 8 9 7 5 3 1 ePrinted in the United States of America no trees were harmed web*bookTM This book is a continuing work in progress. January 1, 2015. Preface For over a decade I have taught an introductory, undergraduate class, "Einstein for Everyone," at the University of Pittsburgh to anyone interested enough to walk through door. With each new offering of the course, I had the chance to find out what content worked and which of my ever so clever pedagogical inventions were failures. At the same time, my lecture notes have evolved. This text owes a lot to many. i i i

Как выбрать - ЗнайКак.ру Чтобы подарить букет, не нужен повод. Дарить цветы стало модным. Зайти в цветочный магазин по дороге с работы и купить букет жене, маме или девушке и тем В жаркое знойное лето без кондиционера не обойтись – прибор легко справляется с охлаждением помещения, а в период межсезонья еще и с обогревом в экономичном режиме. Заведения общественного питания становятся все популярнее — рост потребительской активности был зафиксирован еще в феврале, и тенденция сохраняется. Межкомнатные двери выполняют не только важную функциональную роль, но и являются неотъемлемым элементом декора. Спальня – это особенная комната. В нашу современность многим людям нужны банкетные залы для проведения мероприятий на высшем уровне. Интерьер с индустриальными мотивами в оформлении – популярная идея для дизайна кухни. В госпиталях, поликлиниках, медцентрах соблюдаются условия повышенной санитарной безопасности, а потому и требования к мебели особые. Многие по-прежнему отдают предпочтение газовым плитам.

Solar Panels, Roof Tiles, Photovoltaic Systems | Home, Business & Utility-Scale Solutions | SunPower Learning There are various ways of learning Lojban unique to the individual learning it, but to help you get started here are some suggestions. There are also learning materials available in non-English languages. Here are the links for learning Lojban. ✔ - is a popular textbook ✔ - is the full grammar ✔ - is a good introductory video ✔ - is the dictionary ✔ - is an alternative offline dictionary ✔ - is a great place where you can learn lojban words online. - automatic grammar check of what you write in Lojban (which is unique among all languages!) - Even better than the previous item. - a community. is a chat where you can make friends and ask for help for learning lojban (in #ckule section). Other resources: ✔ Get started with a book .

10 Tech Concepts You Need to Know for 2010 1. Anthropomimetic Machines No matter how closely a robot resembles a human on the outside, if you crack it open, the jumble of wires is unlikely to bear much resemblance to our insides. 2. Yesterday's fuel cells, like those seen here on Spacelab, require a hydrogen infrastructure. Coal is dirty, and fuel cells run on hydrogen--that's the conventional wisdom. 3. For the past five years, scientists at the University of Alberta in Edmonton have been working on the Human Metabolome Project, a database of the 8000 naturally occurring metabolites (that is, small molecules involved in chemical reactions in the body), as well as 1450 drugs, 1900 food additives and 2900 toxins that turn up in blood and urine tests. 4. Scientists at Caltech have been folding microscopic strands of DNA into interesting shapes for the past few years. 5. (Illustration by Leandro Castelao) 6. (Photograph by Associated Press) The ideal prosthetic limb would behave like part of the natural body. 7. 8. 9. 10.

Nicknames, nicks for girls and boys in english. Funny and nice nicknames for games, Facebook and other online services and social networks StarChild: The Solar System The Solar System Listen to an audio version of this page. Solar System Activities The StarChild site is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA/GSFC. StarChild Authors: The StarChild Team StarChild Graphics & Music: Acknowledgments StarChild Project Leader: Dr. Khan Academy Physics Flash Animations We have been increasingly using Flash animations for illustrating Physics content. This page provides access to those animations which may be of general interest. The animations will appear in a separate window. The animations are sorted by category, and the file size of each animation is included in the listing. Also included is the minimum version of the Flash player that is required; the player is available free from The categories are: In addition, I have prepared a small tutorial in using Flash to do Physics animations. LInks to versions of these animations in other languages, other links, and license information appear towards the bottom of this page. The Animations There are 99 animations listed below. Other Languages and Links These animations have been translated into Catalan, Spanish and Basque: En aquest enllaç podeu trobar la versió al català de les animacions Flash de Física.

Интерактивная коллекция гербов городов мира Интерактивная коллекция гербов городов мира явилась логическим продолжением моего альбома значков, собранных в 1958 - 1991 гг., в поездках по 1/6 земной суши. (Ни один из них в сканер не влез, а, поскольку не являюсь профессиональным фотографом, переснимать их не стал.) К сожалению, путешествовать в последнее время приходится лишь в Internete. Первые полгода блуждания в Internet неожиданно показали дефицит подобных символов в виртуальном пространстве (я намеренно не пользовался поисковыми системами для пополнения коллекции). Тем ценнее этот сайт. 24 Oct 05 была анонсирована коллекция гербов Игоря Михайловского, о чем он уведомил меня. Выбрав тот или иной герб города, ты попадаешь в этот город и узнаешь много нового и интересного. При нажатии по текстовой ссылке с названием города, открывается новое окно, в котором загружается сайт соответствующего города с исторической справкой. Вот список потерь по состоянию на 21/11/13: Anjo (А. Hawksbury (В.

Could High-Dive Jumpers Leap Over This Whole Pool? This is an older video from the World Championship in Dødsing. That’s about all I know except that it’s in Oslo, Norway. Watching this shows several very entertaining jumps. So, is it possible to run and jump from the high dive and hit the far end of the pool? Gathering Information After looking around on Google Maps, I found the location of the high dive. That’s about 16 meters from the end of the platform. Projectile Motion Yes, there is some guy jumping off a platform — in physics we would call this projectile motion even though he isn’t being “launched” like you might think. Since the only force is in the vertical direction, I can write the following two force equations. The acceleration in the horizontal (x-direction) would be zero and the acceleration in the vertical direction would be -g (or -9.8 m/s2). Since the x-velocity is constant, we can write the following: For the y-motion, we can write: In general, the initial x and y velocities would be: How Fast Would You Have to Run? Ok.

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