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fantastic vesicle traffic
Lec 1 | MIT 8.02 Electricity and Magnetism, Spring 2002
Solving the Mystery of River Formation | Science | AAAS
Look outside after a heavy rain and you may find a miniature Grand Canyon in your backyard, complete with a complex network of tributaries. The precise conditions that cause rivers of all sizes to form branches have long been a mystery; now, a new study pinpoints two opposing physical forces that work together to produce the intricate patterns. The discovery could help scientists better understand rivers at all scales and even on other worlds; for example, the icebound methane rivers on Titan, one of Saturn's moons. When rain hits a tilted surface, like the side of a mountain or a hill, it tends to flow toward existing depressions. The flow of water erodes the rock or soil, widening and deepening the depressions. Called incision, the process is competitive and even somewhat cannibalistic. Perron and colleagues guessed that a certain ratio between rates of incision and soil creep acts as a "tipping point" for the creation of river branches.
Culture of Science | From climate, energy, & oceans to economics, health, & policy ~ everything is connected.
The Renaissance Mathematicus
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PHYS771 Lecture 9: Quantum Scott Aaronson There are two ways to teach quantum mechanics. The first way -- which for most physicists today is still the only way -- follows the historical order in which the ideas were discovered. So, you start with classical mechanics and electrodynamics, solving lots of grueling differential equations at every step. Then you learn about the "blackbody paradox" and various strange experimental results, and the great crisis these things posed for physics. Today, in the quantum information age, the fact that all the physicists had to learn quantum this way seems increasingly humorous. As a direct result of this "QWERTY" approach to explaining quantum mechanics - which you can see reflected in almost every popular book and article, down to the present -- the subject acquired an undeserved reputation for being hard. So, what is quantum mechanics? Ray Laflamme: That's very much a computer-science point of view. Scott: Yes, it is. A Less Than 0% Chance (p1,.... . ?
PHYS771 Lecture 9: Quantum
Perhaps you don't have enough class periods to do every science experiment you wish you could, or maybe your budget for beakers and baking soda is all tapped out. Maybe you just want to watch and see how it's done before you try to build a volcano with 24 fourth-graders. Whatever the reason, having students watch a science demonstration close up on the Web is the next best thing! Read on to discover 40 favorites for K-8 students chosen by the great people at the X-Ray Vision-aries blog. They may even inspire your students' next science fair projects! 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. How to Choose a Science Fair Topic Help your students choose topics that will bring out their best work. An experiment can be as simple as "Why do I feel hotter when I wear the red side of my jersey instead of the white when I play soccer?"
40 Cool Science Experiments on the Web
Bill Nye | Official Website for Bill Nye The Science Guy
GRADE 6 SCIENCE - FLIGHT
Neuroscience's New Consciousness Theory Is Spiritual | Bobby Azarian
“Science is not only compatible with spirituality; it is a profound source of spirituality” -Carl Sagan It appears that we are approaching a unique time in the history of man and science where empirical measures and deductive reasoning can actually inform us spiritually. Integrated Information Theory (IIT)—put forth by neuroscientists Giulio Tononi and Christof Koch—is a new framework that describes a way to experimentally measure the extent to which a system is conscious. As such, it has the potential to answer questions that once seemed impossible, like “which is more conscious, a bat or a beetle?” The decline and demise of the mystical As more of the natural world is described objectively and empirically, belief in the existence of anything that defies current scientific explanation is fading at a faster rate than ever before. This is because modern science has achieved impeccable performance when it comes to explaining phenomena previously thought to be unexplainable. That’s right.
The lunar cycle: effects on human and animal behavior and physiology.
BBC Radio 4 - Natural History Heroes - 5 scientists who changed the way we see nature
Magic 'metamaterials' storm physics
4 March 2015Last updated at 08:22 ET By Jonathan Webb Science reporter, BBC News, San Antonio One material on display was a rubber slab with programmable stiffness Physicists are abuzz with possibilities for "metamaterials" that can be designed to have surprising properties. Tweaking the structure of materials to manipulate things like their appearance is already fairly well-known; the next phase is changing their mechanics. A major conference is alive with ideas, designs and samples including springy ceramics, unfeelability cloaks and programmable rubber sponges. They could help build spacecraft tiles or even terrain-sensitive shoe soles. "I think this idea of metamaterials is slowly migrating into different areas," said Prof Martin Wegener, from the Karlsruhe Institute of Technology in Germany. "Originally the excitement was all about electromagnetism - and then it went to totally different areas like thermodynamics and, lately, mechanics." Now you feel it Set your sole Saving engines
Five laws of library science
The Five laws of library science is a theory proposed by S. R. Ranganathan in 1931, detailing the principles of operating a library system. Many librarians worldwide accept them as the foundations of their philosophy. These laws are: Books are for use.Every reader his / her book.Every book its reader.Save the time of the reader.The library is a growing organism. Overview First Law: Books are for use The first law constitutes the basis for the library services. The first law of library science "books are for use" means that books in libraries are not meant to be shut away from its users. Second Law: Every reader his/her book This law suggests that every member of the community should be able to obtain materials needed. The second law of library science "every reader his/her book" means that librarians serve a wide collection of patrons, acquire literature to fit a vast collection of needs, do not judge what specific patrons choose to read. Variants References
The list of what a child needs in order to flourish is short but nonnegotiable. Food. Shelter. Play. Love. Something else, too, and it’s meted out in even less equal measure. Words. Reading fuels the fires of intelligence and imagination, and if they don’t blaze well before elementary school, a child’s education — a child’s life — may be an endless game of catch-up. That’s a truth at the core of the indispensable organization Reading Is Fundamental, a nonprofit group that provides hundreds of thousands of free books annually to children age 8 or younger, in particular those from economically disadvantaged homes, where books are a greater luxury and in shorter supply. I shine a light on Reading Is Fundamental, or R.I.F., for several reasons. We’re in the midst of giving thanks, and this group deserves plenty. We’re on the cusp of the year-end holiday season, during which many people turn their attention to charity, making the most generous of their yearly donations. It’s vital nourishment.
The Gift of Reading
Interactive Reader’s Advisory: Flow Chart Display | Karissa in the Library
Once upon a time I woke up with an idea for a display. A huge flow chart that took up an entire wall, and asked readers questions about their reading preferences. As they worked their way down the chart, they would have to decide for themselves what kind of book they wanted to read, and eventually would find themselves at an envelope with a booklist. This week I was able to make that display a reality at The Cambridge Idea Exchange! I love reader’s advisory tools that ask the users to make decisions for themselves about what they want to read. Not only does it help them find a great new book, but it helps them figure out what they like, and why they like it. Something extra I decided to add was a “Personalized Book Suggestions” form on the back of each booklist. Also, attaching related images to each envelope was a last minute decision after a brainstorming session with a coworker, and I’m so glad I did it! Questions and Answers Are you looking for something realistic or fantastical?
These files are PDF copies of the individual Chapters in the Glencoe Earth Science textbook. This is the textbook the students are using for the 2014-2015 school year. The Glossary is also included on this page. Please click on file you would like to view. Chapter 1 - The Nature of Science (PDF 5.13 MB) Chapter 2 - Matter (PDF 16.20 MB) Chapter 3 - Minerals (PDF 14.00 MB) Chapter 4 - Rocks (PDF 13.77 MB) Chapter 5 - Earth's Energy and Mineral Resources (PDF 20.38 MB) Chapter 10 - Plate Tectonics (PDF 21.78 MB) Chapter 11 - Earthquakes (PDF 18.56 MB) Chapter 12 - Volcanoes (PDF 15.38 MB) Chapter 13 - Clues to Earth's Past (PDF 17.48 MB) Chapter 14 - Geologic Time (PDF 19.27 MB) Chapter 15 - Atmosphere (PDF 3.13 MB) Chapter 16 - Weather (PDF 3.79 MB) Chapter 17 - Climate (PDF 6.51 MB) Chapter 18 - Ocean Motion (PDF 8.15 MB) Chapter 19 - Oceanography (PDF 5.01 MB) Chapter 22 - Exploring Space (PDF 3.79 MB) Chapter 23 - The Sun-Earth-Moon System (PDF 3.24 MB) Chapter 24 - The Solar System (PDF 3.33 MB)
Textbook by Chapter
Hands-On Optics (HOO)
Making an Impact with LightHands-On Optics (HOO) was a four-year informal science education program funded by a $1.7 million grant from the National Science Foundation (NSF). The project was collaboration between SPIE, the Optical Society of America (OSA) and the National Optical Astronomy Observatory(NOAO). The program brought science education enrichment to thousands of underrepresented middle school students in more than ten states, including female and minority students, who typically have not been the beneficiaries of science and engineering resources and investments. HOO provided more than 100 teachers with up to six activity modules, each containing enough materials for up to 30 students to participate in 6-8 hours of hands-on optics-related activities. Hands-On Activities I'm Under a Lot of Stress Here! Fun With the SunThe Sun gives off a great deal of energy in the ultraviolet (UV) range of the EM spectrum.
Optics: Light, Color, and Their Uses Educator Guide
Product Type: Educator GuideAudience: Educators, Informal EducationGrade Levels: K-12Publication Year: 2000Product Number: EG-2000-10-64-MSFCSubjects: Physical Science The guide contains color and light activities using lenses, prisms and mirrors to create telescopes, periscopes, microscopes and kaleidoscopes. Other activities include finding focal length and understanding reflection, refraction and diffraction. Activities are marked by grade level. Optics Educator Guide [6MB PDF file]
The Ultimate Plan to Become a Data Scientist in 2016
Introduction Data Scientist is one of the hottest jobs of this decade. The demand for data scientists is much higher than available candidates (Source). However, if you do one search on Google, you will see your dream vanishing. If you are facing a similar problem, let’s accomplish this in 2016. Click Here –> Link to Resources If you like what you just read & want to continue your analytics learning, subscribe to our emails, follow us on twitter or like our facebook page. Related My recommendations - SlideShare Presentations on Data Science Introduction Every one has their own learning sytle! September 7, 2015 In "Business Analytics" Lifetime Lessons: 20 Things Every Data Scientist Must Know Today Introduction I've spent close to a decade in data science & analytics now. November 18, 2015 24 Ultimate Data Scientists To Follow in the World Today Introduction Having a hero / heroine helps you navigate through the difficult times.
Data Science Central Featured Article Thousands of...
In 2009, Ford brought its new supermini, the Fiesta, over from Europe in a brave attempt to attract the attention of young Americans. It passed out 100 of the cars to influential bloggers for a free six-month test-drive, with just one condition: document your experience online, whether you love the Fiesta or hate it. Young bloggers loved the car. Young drivers? Not so much. After a brief burst of excitement, in which Ford sold more than 90,000 units over 18 months, Fiesta sales plummeted. Don’t blame Ford. Adulthood, Delayed The Great Recession changed young Americans' attitudes about what it means to be an adult.by Derek Thompson In a bid to reverse these trends, General Motors has enlisted the youth-brand consultants at MTV Scratch—a corporate cousin of the TV network responsible for Jersey Shore—to give its vehicles some 20-something edge. Perhaps. Since World War II, new cars and suburban houses have powered the economy and propelled recoveries.
The Cheapest Generation
La empresa que cambió forma de comprar con celular
Simón Borrero viste jeans y una chaqueta fluorescente. Habla rápido, suelta cifras, datos, sonríe... Tiene 32 años y quiere cambiar el mundo. Pero, ¿qué es lo que hacen? La interfaz, que es como se ven los productos y oferta de servicios en la aplicación, es atractiva y amigable. La historia Simón es administrador de los Andes, pero cuando estaba estudiando, con 700.000 pesos que tenía en el bolsillo, creó Imaginamos, un estudio de software que comenzó a crecer orgánicamente sin ningún otro recurso. Adriana Suárez, directora ejecutiva de Endeavor Colombia, la organización que se encarga de descubrir emprendedores, capacitarlos y conectarlos con inversionistas, conoce su caso de cerca. Entonces la línea del tiempo fue así: “Con Imaginamos aprendimos de software, llegó Grability, que los catapultó. Los cuatro emprendedores tomaron la decisión de mapear en un radio de cinco cuadras, al norte de Bogotá, todo lo que encontraron. La bola de nieve ya no tenía freno. Industria en crecimiento
Leslie Kim Gray ahahaha I went to Macy's and had a bra fitting. 1st time ever. $89.00 and $92.00 ahahahaha I don't think so! Happy with my all cotton walmart sports bra 3 for $10.00? 30 · 7 hours ago Kati Carson While I agree that bras are overpriced and we shouldn't judge women for foregoing bras, after a certain size, you medically need to wear a bra, practically, or else have SERIOUS back pain. 16 · 5 hours ago Estela Cabus It's nice if you can buy the cheap Walmart bras, but if you are well endowed you have no choice but to pay for expensive ones at Macy's. 12 · 6 hours ago Elizabeth R. I'm 34DDD and it's impossible to find a decent bra. 13 · 6 hours ago Madelein Araya Hernández Bras are not necessarily the solution to gravity affecting boobs. 10 · 6 hours ago Fernando Chanez It would be nice if a group of women started their own company of women products with prices they think are the correct, that would be much more productive. 5 · 3 hours ago Jessica Wydner 1 · 1 hour ago 2 · 6 hours ago
polka dot trees leaf experiment - 5 orange potatoes