Coming soon!

Dear Friends,

Soon i am going to teach you how to make the Wangdu Chair like my chair! You can contact me at 7620959702! If foreingners want to call me they can dial the code for india and can call me at this no.! Thankyou!

Yours Faithfully,

Rishabh Mishra

Some Pictures of Wangdu Chair!

Wangdu Chair!

Hello friends,

"Wangdu Chair" is an invention done by me! I was learning and working on this project since 2 months! Now let me tell you abut this chair! This chair is capable of taking decision on its own! It has its own brain! I have made this chair for the future and the present Senior Citizens Of India and other Countries! If a senior citizen cannot walk on his leg, he can use this chair! Like, if any obstacle comes in between this chair while the Senior Citizen is sitting on it, it will avoid the obsatcle! It can even be operated from a computer! It even has a horn! If someone comes in middle of its path, it will give horn or the person sitting on it can press the horn! It can even walk like a snake! It can even rotate 360 degrees on D.C. Motors without the help of an A.C. Servo Motor! And if the person sitting on it wants to go somewhere the chair will take him or her to his or her destination! It can even trace a line! This is an Unique chair in this world! No chair has been created as this chair is! It can even be used for security and in many large industries! One more feature of this chair is that it is an energy efficient chair! The whole chair is works on 10v (volts)!.

Thats all from my side and i hope you all like this project and you also create such projects! Incase of any doubts or quaries related to such things you can contact me at rishabhm242@gmail.com!

Build a Bubble-Powered Rocket!

Build your own rocket using paper and fizzing tablets! Watch it lift off. How high does your rocket go? Print this page for the instructions.

Suggestion:

Find a grown-up to do this activity with you.

Materials:

• Paper, regular 8-1/2- by 11-inch paper, such as computer printer paper or even notebook paper.
• Plastic 35-mm film canister (see hints below)
• Cellophane tape
• Scissors
• Effervescing (fizzing) antacid tablet (the kind used to settle an upset stomach)
• Paper towels
• Water
• Eye protection (like eye glasses, sun glasses, or safety glasses)

Hints:

The film canister MUST be one with a cap that fits INSIDE the rim instead of over the outside of the rim. Sometimes photography shops have extras of these and will be happy to donate some for such a worthy cause.

Keep in mind:

Just like with real rockets, the less your rocket weighs and the less air resistance (drag) it has, the higher it will go.

Making the Rocket

You must first decide how to cut your paper. You may cut it the short way or the long way to make the body of the rocket. There is no one right way to make a paper rocket. Try a long, skinny rocket or a short, fat rocket. Try a sharp nosecone or a blunt nosecone. Try it with fins or without fins. Experiment!
Here's just one idea for how you might cut your whole rocket from one piece of paper:

Here are the basic steps:

1. Cut out all the pieces for your rocket.
2. Wrap and tape a tube of paper around the film canister. Hint: Tape the canister to the end of the paper before you start wrapping.
3. Important! Place the lid end of the canister down.
4. Tape fins to your rocket body, if you want.
5. Roll the circle (with a wedge cut out) into a cone and tape it to the rocket's top.

Blasting Off

1. Put on your eye protection.
2. Turn the rocket upside down and remove the canister's lid.
3. Fill the canister one-third full of water.

Now work quickly on the next steps!

1. Drop one-half of an effervescing antacid tablet into the canister.
2. Snap the lid on tight.
3. Stand your rocket on a launch platform, such as your sidewalk or driveway.
4. Stand back and wait. Your rocket will blast off!

So, Dr. Marc, how does the pop-rocket work?

When the fizzy tablet is placed in water, many little bubbles of gas escape. The bubbles go up, instead of down, because they weigh less than water. When the bubbles get to the surface of the water, they break open. All that gas that has escaped from the bubbles pushes on the sides of the canister.
Now when you blow up a balloon, the air makes the balloon stretch bigger and bigger. But the little film canister doesn't stretch and all this gas has to go somewhere!
Eventually, something has to give! So the canister pops its top (which is really its bottom, since it's upside down). All the water and gas rush down and out, pushing the canister up and up, along with the rocket attached to it.
We call this wonderful and useful fact the law of action and reaction. The action is the gas rushing out of the rocket. The reaction is the rocket taking off in the other direction. In other words, for every action there is an equal and opposite reaction. The rocket goes in the opposite direction from the gas, and the faster the gas leaves the rocket, the faster the rocket gets pushed the other way.
Source :http://spaceplace.nasa.gov/pop-rocket/

How to be in two places at the same time

An ambitious experiment to make a glass sphere exist in two places at once could provide the most sensitive test of quantum theory yet. The experiment will place a sphere containing millions of atoms – making it larger than many viruses – into a superposition of states in different places, say researchers in Europe.

Physicists have questioned whether large objects can follow quantum laws ever since Erwin Schrödinger's thought-experiment suggested a cat could exist in a superposition of being both alive and dead.

The idea is to zap a glass sphere 40 nanometres in diameter with a laser while it is inside a small cavity. This should force the sphere to bounce from one side of the cavity to the other. But since the light is quantum in nature, so too will be the position of the sphere. This forces it into a quantum superposition.

The experiment will have to be carried out in high vacuum and at extremely low temperatures so that the sphere is not disturbed by thermal noise or air molecules, says lead author Oriol Romero-Isart from the Max Planck Institute of Quantum Optics in Garching, Germany.

No overlap

Last year Aaron O'Connell and colleagues at the University of California, Santa Barbara, demonstrated that it should be possible to create superpositions in a 60-micrometre-long metal strip. However, the physical separation associated with the two different states of the strip was only 1 femtometre, about the width of the nucleus of an atom.

The new experiment, in contrast, would put the glass sphere in two entirely distinct places at once, with no overlap. "In our proposal the centre of mass is put into a superposition of spatial locations separated by a distance larger than the size of the object," Romero-Isart says.

Atom interferometer experiments have previously achieved good separation, putting fullerene and other molecules containing up to a few hundred atoms into distinct superposition states, but the new scheme will do this with truly macroscopic objects.

This will be particularly valuable in providing tests for quantum mechanics, the researchers say. Observing the behaviour of such very large objects obeying quantum laws offers our best hope of finding ways in which quantum theory breaks down.

The Romero-Isart experiment would take us "substantially beyond the current state of the art", says Anthony Leggett of the University of Illinois at Urbana-Champaign. "Neither the fullerene experiments nor that of O'Connell and his team are able to test well-developed competitors to quantum mechanics."

Source:http://www.newscientist.com/article/dn20712-how-to-be-in-two-places-at-the-same-time.html

Latest Technology News-Bendy solar cells that can be printed onto paper

(Image: Patrick Gillooly)
Imagine decorating your bedroom walls with paper made from the same solar cells that now power your home.
That's the tantalising possibility thrown up by the development of lightweight solar cells that can be printed on paper, be scrunched up like an accordion and still conduct electricity. Researchers at the Massachusetts Institute of Technology printed them on untreated copy paper using a technique that could help slash the cost of producing solar cells.
The glass or plastic backing typically used for solar cells accounts for 25 to 60 per cent of the total cost for materials and so lightweight paper-based cells could significantly reduce photovoltaic production, transportation and installation costs.
A team led by Vladimir Bulović and Karen Gleason changed an ingredient in the material sandwich that makes up a solar cell. They used a flexible conducting polymer as the bottom electrode in the sandwich instead of a transparent metal oxide.
The researchers constructed the solar cell using a dry fabrication process, depositing each layer as a vapour dispersed in a vacuum. A thin mask patterned with holes restricted the placement of the five separate layers of material into cells: the polymer electrode, three energy-collecting materials and the metal electrode at the top of the sandwich. The fact that the vapour was deposited at a relatively low temperature means that the technique allows solar cells to be created on fabric, plastic, tissue paper and even printed newspaper.
At the moment, these paper solar cells are only about 1 per cent efficient. But that's still enough to run small electronics like an alarm clock. A lightweight solar cell could be used for wallpaper or window shades and simply installed using staples or glue.

Source:http://www.newscientist.com/blogs/onepercent/2011/07/green-machine-printing-solar-c.html