Friday, April 27, 2012

Watch the Big Bang Theory Videos

[caption id="" align="alignright" width="100" caption="Penny (The Big Bang Theory) (Photo credit: Wikipedia)"]Penny (The Big Bang Theory)[/caption]

The Big Bang Theory is an American sitcom created by Chuck Lorre and Bill Prady, both of whom serve as executive producers on the show, along with Steven Molaro. All three also serve as head writers. It premiered on CBS on September 24, 2007.
The show is centered on five characters: roommates Leonard Hofstadter and Sheldon Cooper, two physicists who work at the California Institute of Technology (Caltech); Penny, a blonde waitress and aspiring actress who lives across the hall; and Leonard and Sheldon's equally geeky and socially awkward friends and co-workers aerospace engineer Howard Wolowitz and astrophysicist Rajesh Koothrappali. The geekiness and intellect of the four guys is contrasted for comic effect with Penny's social skills and common sense.
Three other supporting characters have also been promoted to starring roles: Leslie Winkle, a physicist colleague at Caltech and, at different times, a lover of both Leonard and Howard who left the show after season 3; Bernadette Rostenkowski, Howard's fiancée, who is a microbiologist and former part-time waitress alongside Penny; and Amy Farrah Fowler, a neurobiologist who joins the group after being matched to Sheldon on a dating website.


Tuesday, April 24, 2012

Who invented the Zipper?


The zipper (also called the zip fastener) was invented by Gideon Sundback - (April 24, 1880 – June 21, 1954), a Swedish-American electrical engineer.


Find below the diagram of Zipper in the patented format.

Sundback also created the manufacturing machine for the new zipper.

Sundback was awarded the Gold Medal of the Royal Swedish Academy of Engineering Sciences in 1951.

Sundback died of a heart condition in 1954 and was interred at Greendale cemetery in Meadville, Pennsylvania.

In 2006, Gideon Sundback was honored by inclusion in the National Inventors Hall of Fame for his work on the development of the zipper.

Monday, April 16, 2012

Worthy Downloads from PlusTwoPhysics

SAN FRANCISCO, CA - AUGUST 30:  People watch a...

Hi! We are bringing together some of the worthy downloads we provided earlier and elsewhere at this site. Hope that these links will help you score better.

Electrostatics 1

Electrostatics 2

Electric Potential

Current Electricity (The file a little bit large and therefore will take some time to load/download)

Related articles

Sunday, April 8, 2012

The Chipmunk Physics Engine on PSP

Videos have been uploaded on Youtube about the latest version of Chipmunk Physics engine on the Sony Playstation Portable console as the gaming trend takes a turn towards technology which combines law of physics with the excitement of gaming. It is a portable open source two dimensional rigid body physics library distributed under the MIT licence. With an independent OS and thoughtfully written in C99 by Scot Lembecke, Chimpunk is intended to be lightning fast, portable, numerically stable and easy to use.

There are different kinds of body forms such as rigid, soft and fluid which in turn have their own dynamics and physical systems. For example; the movement of water into a container is different from the movement of a rigid pot falling onto a slope. A Physics Engine is computer software that provides an approximate simulation of these physical systems in domains of computer graphics, video games and film.  The main uses are in video games as middleware and the simulations in this case are real time.

Chipmunk is used in hundreds of games all over the world in just about any system. This technology is used effectively by Sony to improve the usability of the portable Playstation console. The PSP games that currently use the Chipmunk physics engine are Stakker, Anti-Tetris and Brix DS. Stakker PSP is a fun game of building up and destroying towers made out of falling blocks. The motto of the game is to build up towers without letting any piece fall off and after reaching a certain height; it is to be destroyed with a projectile coming from the left for points. Anti-Tetris is a visual reproduction of Game boy Tetris and is based on the physics engine which allows the gamer to fasten and slow down the fall of the pieces at will.

With Brix DS, the objective is to remove all the bricks of grey level without dropping the dynamites to the ground. The gamer would encounter different types of bricks throughout various levels as the physics engine makes movement of the bricks realistic. Many game developers are now using the Chipmunk Physics engine to develop first person shooter games and various other games across various genres. Chipmunk seems to have opened a new door to seamless opportunities in the multi-billion dollar gaming industry.

Author Biography: This is a guest article written by Sapna, Manager at, an Indian horizontal site. Significant verticals include Jobs, Classifieds, News and Education.

Tuesday, April 3, 2012

Mathematics PowerPoint Presentations for Class XI - XII

These are some of the Mathematics PowerPoint Presentation assignments received from students of classes XI and XII

You can use it to reconstruct and use it for submitting better assignments  to your teachers



Trigonometric Functions of Special Angles

Linear Inequalities





Learning is like Enjoying Delicious Food

Yes! – I didn’t say eating food, I said enjoying!

How to eat food enjoying it? The cafeteria feeling starts with the aroma, the pleasant smell from the food which fills out mouth with water – yes, the mouth watering aroma. Enjoy the smell!

The dish presented neatly has a greater appeal and is more appetizing. Enjoy the shape and organization of the dish, Enjoy the beauty!

Now it’s time to taste. Don’t jump in to swallow everything in one bite. Take a small portion of the food, bring it near your nose, enjoy the smell once more and gently place it on your tongue (which already watering) and close your mouth and Enjoy the taste!

Now chew it slowly but thoroughly ensuring that you have chewed every portion of it and is now well mixed with saliva. This part is essential for proper digestion. Now you can swallow it easily without any pressure. This will go smoothly to your stomach and digest well and will help in easy assimilation! Repeat these steps with each bite. You will Enjoy a better living for sure!

Now, how to learn? Why I said learning is like Enjoying Food?

Before learning anything, it is essential that one should have an interest in it. Just like one is attracted to a dish by the smell and then by its shape and looks and way of presentation.

Quite often students are forced to learn what they didn’t intend. But, when you’ve joined a course, it is essential to complete it and come out with flying colours (especially when you have no other choice)

Find out all the good things about the subjects and topics you are learning, get motivated and create an interest in it. Teachers have a great role to play in this regard.

While learning, “take it in small bites and chew well.” Make sure that you know everything which you claim to have learnt.

When you are learning a lesson, the following procedure will help.

  • Have a look at the chapter heading and the subheadings and just try guessing what the chapter will be all about.
  • Read the lesson summary (Point to ponder – usually given at the end of the chapter)
  • Read the questions
  • Now start reading the chapter keeping the questions in mind
  • And remember – “Questioning Every Answer is more important than answering every question”


Wish you good look. Enjoy Learning!

Authentic Websites for Overseas Education

Are you looking forward to study in a foreign University?

The following websites will be helpful for you.

  • English Language (IELTS stands for International English Language Testing System). Many countries want your IELTS gradeto asses your standard in the usage of English Language. The test is used to assess your proficiency in reading, writing, speaking and listening skills in English Language. The details of the test are available at the above site.

  • IELTS break time (TOEFL stands for Test Of English as a Foreign Language). This is also a testing system to assess your proficiency in English.

  • : Helps you prepare for GMAT - Graduate Management Aptitude Test through Model Exams online

  • (GRE stands for Graduate Record Examination). GRE score is essential for applying for Masters degree or PhD from American Universities. The test is a Multi Choice Computer Adaptive one