Monday, March 3, 2008

8 Free Online Resources for Physics (3)

3. The MathPhysics applet site is the creation of Paul Falstad. The site offers more than 40 applets related to Physics and Mathematics. The topics covered include oscillations and waves, acoustics, signal processing, Electricity and magnetism (Both static and dynamic), Quantum Mechanics, Linear Algebra, Vector Calculus, Thermodynamics etc. More over there are links to similar content. The applets given in the site offer changeable parameters and are well crafted. Each applet is accompanied by brief instructions and if required detailed instructions can be accessed. These applets can be downloaded and there are source codes for some of the applets.

To visit the MathPhysics applets site click here.

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8 Free Online Resources for Physics (2)

2. M Casco Associates Physics 1
M. Casco Associates publishes run-time books for physics or math students in high school or college. Subjects are mechanics, dynamical systems and chaos. They offer these books at no cost to anyone interested. Run-time books use mathematical simulations of the subject system instead of static illustrations, allowing experimentation with the concepts covered in the text. For folks who don't want to download and install the run-time books, they offer online versions of two of their titles, "Order" and "Physics 1". These are powered by Java rather than the C++ programs that power the run-time books.
The physics course covers Mechanics, Vector arithmetic, Newton's Laws of Motion, Circular Motion, Work and Energy, Collisions, Elasticity, Fluid Mechanics and Waves (Mechanical). The course has an exhaustive list of charts, images and graphs. Concepts which are difficult to grasp are prominently marked. The interactivity of the applets provided enhances the teaching capability of the site. Registered students (the registration is free) can directly contact the authors to clarify doubts.

To visit the website click here

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8 Free Online Resources for Physics

1. Glenbrook South Physics Homepage gives set of instructional pages written in an easy-to-understand language and complemented by graphics and Check Your Understanding sections. An ideal starting location for those grasping for understanding or searching for answers. The "Physics classroom" link takes you to the actual courseware. The topics covered include Newton's Laws, Kinematics, Vectors-Motion and Forces in Two Dimensions, Momentum and its conservation, Work energy and power, Circular motion, satellite motion, Waves (Sound and Light), Optic studies (reflection, refraction), Electricity etc. Though the coverage is limited, the dearth is more than made up by depth. The chapters are further divided into sections which are spread across many lessons and pages, thus contributing to the lucidity and ease of learning. There are plenty of images, animations and examples to make the explanation more vivid. The concepts are followed by a quick review and also a case study applying the concept to situations in real life. The " Projects corner" is another link that contains project ideas. Students and learners can use the procedure on executing an experiment described here. The absence of ads makes browsing throgh the site a pleasent experience The site can be downloaded en masse with a web site extractor for convenient browsing offline.

To go to the GBS Physics Homepage Click Here

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Sunday, March 2, 2008

Want Flashcards - Get it online FREE!

Flashcards are study tools. Think of a small 3×5 index card with a question on one side and an answer on the other side. Flashcard Exchange has a comprehensive and robust on-line study tool. You can study any flashcard in the flashcard system without having to logging in!!! This web site is an internet application where you can create, study, print and download flashcards. You can also create your own flashcards (unlimited!) to study online. Additionally you can make these flash cards in any language and append images to the cards.

To visit the site click here

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Online graphical dictionary

Visuwords™ is an online graphical dictionary where you can look up words to find their meanings and associations with other words and concepts. This site is especially useful for those who get easily confused between words and their associations. The technique used to represent the words and their associations is similar to mind mapping, hence a lasting impression of the word remains in your mind. You can produce diagrams reminiscent of a neural net and learn easily how words associate.

You can enter words into the search box to look them up or double-click a node to expand the tree. Click and drag the background to pan around and use the mouse wheel to zoom. Hover over nodes to see the definition and click and drag individual nodes to move them around to help clarify connections.

This site will be particularly useful for those who are planning to take English language tests such as TOEFL® or the GRE® (useful for verbal section) or IELTS™, and as the people at Visuwords put it:

"It's a dictionary! It's a thesaurus!
Great for writers, journalists, students, teachers, and artists.
The online dictionary is available wherever there’s an internet connection.
No membership required."

Its very easy to use. For example I did not want to repeat the word 'especially' so checked it up on visuwords to get a similar word 'particularly'. Its as simple as that. Recommended for all.

To go to the Visuwords website click here.
To go to the Visuwords Full view website click here.

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Learn new languages

In the globalized world Perhaps the most useful skill you can carry is knowledge of the local language, especially while traveling. Further, knowledge of international languages help you get the edge in your work place. For example you can work at international locations, get promotions and work with global client's. The brave new traveler website provides a collection of resources where you can learn new languages. The comments by site visitors provide personal learning experience and valuable information.

To visit the site click here.

But why learn a new language? Well, It can open up a startling range of opportunities, ease the strain of logistics and planning, and allow you to develop a deeper connection with the place and, more importantly, the people you are visiting.

A good phrasebook, and the dedication to use it, are the first steps to mastering a new tongue. Beyond that, an organized set of study materials can make all the difference between stumbling though a few disjointed commonalities and articulately expressing your ideas and opinions. However nobody wants to buy and carry around a pile of language books. Fortunately, there are a number of excellent internet sites devoted to language study, most of them providing their services for free.


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Saturday, March 1, 2008

Quick reference to integral equations

To view the pdf file in full view click here or click the tab titled "open publication" at the bottom of the preview pane shown below (preview pane may not be visible in RSS reader ).




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Quick reference to differential equations

To view the pdf file in full view click here or click the tab titled "open publication" at the bottom of the preview pane shown below (preview pane may not be visible in RSS reader ).


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NASA Technical reports server


The NASA technical reports server provides an exhaustive database of technical and research papers published by NASA.

NASA Technical Reports Server (NTRS)

The NTRS is a valuable resource for students, educators, researchers, and the public for access to NASA's current and historical technical literature since it was first released in 1994. NTRS provides access to approximately 500K aerospace related citations, 90K full-text online documents, and 111K images and videos. NTRS numbers continues to grow over time as new scientific and technical information (STI) is created or funded by NASA. The type of information found in NTRS include: conference papers, images, journal articles, photos, meeting papers, movies, patents, research reports, and technical videos.

The NTRS provides access to NASA's current and historical aerospace research and engineering results. NTRS integrates three separate information collections and enables search and retrieval of information through a common interface:

  • NACA Collection: Citations and reports from the NACA Technical Report Server (TRS), http://naca.larc.nasa.gov, are now in NTRS. The NACA TRS site is retired and no longer in service following the consolidation of citations and reports into NTRS. The NACA collection is historical information from the NACA period lasting from 1915 to 1958.
  • NASA Collection: Citations and documents created or sponsored by NASA. The NASA collection time period starts in 1958 and continues to the present.
  • NIX Collection: Citations and images, photos, movies and videos downloaded from the NASA Image eXchange and served out through NTRS. NIX is a separate system and users can go directly to the NIX to search imagery as well as through NTRS.

NTRS provides access to many citations and an increasing number of electronic documents and images. Citations indicate if an item is available online or if it should be ordered. If the item is available from NASA, the citation will provide guidance on ordering items from the NASA Center for AeroSpace Information. If the item is not available from NASA, the citation provides a link to a list of suggested sources to order the document.

The Information found in NTRS is government information and it is unlimited, unclassified, and publicly available.

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