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Hosted by the Office of Scientific and Technical Information, U.S. Department of Energy

National Center for Biotechnology Information Molecules | Sunset Lake Software Molecules is an application for the iPhone, iPod touch, and now iPad that allows you to view three-dimensional renderings of molecules and manipulate them using your fingers. You can rotate the molecules by moving your finger across the display, zoom in or out by using two-finger pinch gestures, or pan the molecule by moving two fingers across the screen at once. The combination of the iPhone, iPod touch, and iPad's unique multitouch input system and the built-in OpenGL ES 3-D graphics capabilities enable you to feel like you are manipulating the molecules themselves with your fingers. New molecules can be downloaded from the RCSB Protein Data Bank ( an international repository of biological molecules and their 3-D structures, or NCBI's PubChem, a public database of compounds. Molecules can be downloaded directly to your handheld device and stored there for later viewing. Molecules is free and its source code is available under the BSD license. Related posts

Ibn Battuta Abu Abdullah Muhammad Ibn Battuta, was a Moroccan Muslim scholar and traveler. He is known for his traveling and going on excursions called the Rihla. His journeys lasted for a period of almost thirty years. This covered nearly the whole of the known Islamic world and beyond, extending from North Africa, West Africa, Southern Europe and Eastern Europe in the West, to the Middle East, Indian subcontinent, Central Asia, Southeast Asia and China in the East, a distance readily surpassing that of his predecessors. Early life and Career: Abu Abdullah Muhammad Ibn Battuta, was born in Tangier, Morocco, on the 24th of February 1304 C.E. (703 Hijra) during the time of the Marinid dynasty. He first began his voyage by exploring the lands of the Middle East. Finally, he returned home at Tangier in 1355. Ibn Battuta often experienced culture shock in regions he visited. Death: After the completion of the Rihla in 1355, little is known about Ibn Battuta’s life.

ScriptPhD Topical application of honey in treatment of burns. [Br J Surg. 1991 The Feynman Lectures on Physics PLOS | Public Library Of Science lib.freescienceengineering.org : Welcome Beautiful Mathematical GIFs Will Mesmerize You Digital artist and physics PhD student Dave Whyte is dazzling our computer screens with his mesmerizing GIFs that are the perfect marriage of mathematics and art. And we can’t stop watching them. Whyte shares his brilliant, procrastination-fueling creations on an almost daily basis on his Tumblr account, Bees & Bombs. Whyte studies the physics of foam and told Colossal that his first geometric GIFs riffed on computational modules that he was exploring as an undergraduate student. [Via Colossal, io9 and Bees & Bombs]

21 GIFs That Explain Mathematical Concepts “Let's face it; by and large math is not easy, but that's what makes it so rewarding when you conquer a problem, and reach new heights of understanding.” Danica McKellar As we usher in the start of a new school year, it’s time to hit the ground running in your classes! Math can be pretty tough, but since it is the language in which scientists interpret the Universe, there’s really no getting around learning it. Check out these gifs that will help you visualize some tricky aspects of math, so you can dominate your exams this year. Ellipse: Via: giphy Solving Pascal triangles: Via: Hersfold via Wikimedia Commons Use FOIL to easily multiply binomials: Via: mathcaptain Here’s how you solve logarithms: Via: imgur Use this trick so you don’t get mixed up when doing matrix transpositions: Via: Wikimedia Commons What the Pythagorean Theorem is really trying to show you: Via: giphy Exterior angles of polygons will ALWAYS add up to 360 degrees: Via: math.stackexchange Via: imgur Via: Wikimedia Commons Via: reddit

Calculators This is your one-stop page for the various "solver" tools we have available. Consider bookmarking the page for quick access! Note that most of these tools are provided by MathWay, but there's no need to leave our site to get your answer. This is a GREAT tool if you're looking to check your work, or perhaps solve a tricky problem in an engineering class. But remember, if you're doing homework for your math class, your teacher will want to see your work completed thoroughly, not just an answer. Equation Solver Equation Grapher Derivative Calculator Factoring Calculator Integral Calculator Limit Calculator

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