Iken Scientifica SRDAV Public School

In a jar there are some bacteria. The bacteria doubles itself after every second. If the jar becomes full after 1023 seconds, how much time will it take for half of the jar to fill.

Scratch your brain people.! :)

Iken round 1 results are out. Hope everyone did well!!
Congo to the teams who qualified, and those who didn't, better luck next time..!
Note that the ikenscientifica website has not been updated, so the results will be sent to the respective team leaders' email IDs.

http://youtu.be/cVQdsKPoC0Q

Hydro Pneumo Car,
This is something interesting...!!
Gimme a minute to explain to you how it works....
So, basically 'hydro' is water, and 'pneumo' refers to (more or less) air pressure. Right, so we have a car that runs on the pressure of water & air.

So the science behind it? Firstly, the difference in pressure.... we have some amount of water in the bottle, and as we're pumping air into it, both air and water start getting compressed ('coz the volume of the bottle is gonna remain the same). As a result, a lot of pressure starts building up inside the bottle. Think of it in this way - If you try to fit 100 kids in a space meant for 50, they're gonna start fighting, pushing, and, eventually, will try to get out. The same happens with air and water. After a certain limit, the fluids start rushing out with a strong pressure. What happens next? Heard of Newton's third law of motion? "Every action has its equal & opposite reaction". As the water rushes out, it pushes whatever is behind it (in this case, the air) and that object pushes it back equally. It's like when we're skating, if we push a wall, we tend to move away. So, this pushing-pushing results in the car moving forward. And THAT is how you run a car on water (TBH, nobody is ready to waste such a lot of water on a commercial scale, and so, don't expect cars that run on water, especially in this manner, soon).

That's it for now, will update soon!!

Surahkle - Iken Scientifica Competition 2014-15 Hydro-Pneumo car made by us, team Delhi 61. Music by Gotye, Sombody that I used to know instrumental.

Hello iKenites, sorry for updating after such a long while, we were kinda busy.... So, the iKen Scientifica competition has started.... To get the problem statements for your models, visit the following link:-
http://issuu.com/amitsahoo/docs/iken_scientifica_national_round_inf

Also, to get a sample of how your solution should be, have a look at this one:-
http://issuu.com/amitsahoo/docs/design_guide

ALL THE BEST!

A special event is about to occur in our sun, and it could impact our lives. The magnetic poles of the sun — which are like the ends of a giant bar magnet — are about to flip, that is, the polar north will become the polar south and vice versa. According to scientists at the Wilcox Solar Observatory at Stanford University , the sun could be barely two to three months away from this magnetic field reversal. The change is periodic, taking place once every 11 years or so.

World Space Week

On December 6, 1999, The United Nations General Assembly declared World Space Week as an annual event celebration to be commemorated between October 4-10. The choice of dates was based on recognition of two important dates in space history: the launch of the first human-made Earth satellite, Sputnik 1, on October 4, 1957; and the signing of the Outer Space Treaty on October 10, 1967.

And since that day, we celebrate October 4-10 as world space week.

Wind Power is actually Solar Power

In the rush to find fossil fuel's replacement as the next cheap and plentiful energy source for powering the human machine, wind gets a lot of attention.

But if we go into deeper thoughts, winds actually occur due to the heat emitted by the sun.

The sun warms up our planet, but because of surface irregularities and its rotation, the Earth doesn't heat uniformly. These variances in temperature also cause irregularities in air pressure, and air molecules migrate from areas of high air pressure to areas of low air pressure. This results in wind, the intensity, duration and direction of which are influenced by a number of factors including weather, vegetation, surface water and topography.

So, it is quite right to say that sun is indeed the most important source of energy. (Oh!! It also helps in photosynthesis! :P )

This is a model of a tractor capable of running on a rough terrain. It runs with the help of geared motors and a battery.

This is an example of an experiment related to Electromagnetic Induction (EMI). Notice that the direction of current changes with respect to the direction of motion

In 1831, Michael Faraday made a very important discovery. It stated that a changing magnetic field around a coil (circuit) can produce electric current. This phenomenon is know as Electromagnetic Induction. Under Faraday's Law, electric current is induced only if either the magnetic field is changing or the conductor is moving. This phenomenon has turned to became the basis of almost all electricity generating systems in the world. And so, it is often said he had there been no Faraday, there wouldn't have been electricity. THANK YOU FARADY!!

Dear friends, for a better understanding of how motors work, you should have a look at this video.
http://youtu.be/HWrNzUCjbkk

Now I'll show you how motors make use of electricity and magnetism to create rotation.
→ An el­ectric motor is all about magnets and magnetism: A motor uses magnets to create motion.
→ We know that "Opposites attract and likes repel."
→ Inside an electric motor, these attracting and repelling forces create rotational motion.