# Demonstration Portal

Draw on any webpage. Share thoughts. Move ideas. - Markup Wolfram|Alpha: Computational Knowledge Engine Cobian's site Apple Takes Huge Steps towards a Graphics Pen for iPad Facts vs. Myth Although Apple's CEO scoffed at a stylus being used on the iPhone during his 2007 keynote, the fact remains that Apple continues to this day to bankroll expensive engineers to the task of developing exotic pens, styluses, displays and digital ink engines. I'd follow the facts more than the myth that Apple will never introduce a stylus or digital pen. Expanding the iPad's usage into the field of graphics only makes sense. Patent Background Apple provides us with a basic overview of why this invention is needed by discussing the need to advance touch screens to accept stylus inputs and what it will take to accomplish this. A low resolution array of row and column elements is usually sufficient for finger detection. However, when a stylus is subsequently employed on a touch sensor panel optimized for finger input, the stylus's small tip could often contact a region of the touch surface that is between adjacent capacitive elements (e.g., as between adjacent column sensors).

Math, Physics, and Engineering Applets Oscillations and Waves Acoustics Signal Processing Electricity and Magnetism: Statics Electrodynamics Quantum Mechanics Linear Algebra Vector Calculus Thermodynamics Mechanics Miscellaneous Licensing info. Links to other educational sites with math/physics-related information or java applets useful for teaching: And when you get tired of learning, here is some fun stuff: Java Pong Applet a cute little pong game I wrote a while ago. Desmos. Une calculatrice scientifique en ligne Desmos est sans doute une des calculatrices en ligne les plus complètes que je connaisse. Desmos est effectivement impressionante par ses fonctions proposées et sa puissance de calcul. Desmos propose une quantité incroyable de types de calculs différents ainsi qu’une ribambelle de fonction supplémentaires dignes d’intérêt. Il s’agit d’une calculatrice graphique qui tourne sur n’importe quel navigateur web et qui est gratuite. L’outil vous permet de résoudre des équations et de dessiner les graphiques correspondants. Vous pourrez également ajouter des textes à vos calculs et partager vos graphes sur un blog, un forum et même par email. Dans la classe. Desmos peut être trés utile pour des élèves à partir du secondaire et plus largement pour tous les amoureux des mathématiques qui auront à portée de main en ligne une calculatrice gratuite et puissante capable de générer tout type de calculs m^me les plus complexes. Vous pouvez essayer la calculatrice graphique Desmos ici sur le web.

5 Of The Best HTML5 And CSS3 Frameworks Over the last few years, HTML5 and CSS3 have completely revolutionised the World Wide Web as we know it. With the aid of these two technologies, it’s now possible to create applications that offer a great user experience without the need for Adobe Flash which had many downfalls including its extreme aversion to search engine indexing (along with it incompatibility with many mobile devices such as the iPhone/iPad). Most of the websites we see these days are coded in HTML5/CSS3 but as a coder, it’s important to realise that you can save a lot of time/effort by utilising HTML5 and CSS3 frameworks. Essentially, frameworks are tried and tested sets of code that you can make use of when developing a website/web application. They provide a pre-formed structure which ensures that you don’t have to create every tiny piece of code from scratch each time you create a website/application. 52Framework Source: 52Framework There’s even video tutorials included to help you to understand the framework too.

7 Handy iPhone Apps for Creating Expense Reports This post originally appeared on the American Express OPEN Forum, where Mashable regularly contributes articles about leveraging social media and technology in small business. It’s that time of year. We just wrapped up the holiday festivities, which were full of buying employee gifts and taking clients out for holiday celebrations. The accounting department wants everyone to submit their expenses before year-end. We can’t procrastinate any longer. Besides, getting our expense reports submitted means some extra money for the holiday season. But I think we can all agree that expense reports are possibly the last thing any of us want to be doing at this time of year (or any time of year, for that matter). Luckily, there are plenty of mobile apps that make it easier to track and submit expense reports. 1. Expensify (free) offers the ability to create photo receipts and iPhone expense reports, and it integrates with Expensify's website for instant reimbursement. 2. 3. 4. 5. 6. 7. iReceipt

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