230. Tongue Twisters - She Sees

She sees the sea scene under sunlight

 (Try to say three times fast)

229. Art - Winter Scene

Winter Scene - By Harini, Grade V

228. Photography - Wings of the flight

Photographed: Through the flight window - Wings of the flight

227. Art - Happy Animals

Happy Animals - By Harini, Grade V

226. Heisenberg’s Principle

Harini Senthilkumar

Grade V

Contents

Introduction

What did Heisenberg do? (complex form)

What did Heisenberg do? (simple form)

Sources

INTRODUCTION

Heisenberg has done many interesting things!! But, this is my report and based on what I have read, I chose to write about his Principle of Uncertainty!! You may wonder, what is that, and who is Heisenberg? But, after reading this, your questions will soon be solved!

What did Heisenberg do? (COMPLEX FORM)

In 1927, Heisenberg was in Denmark, and he was working at his friend, Niels Bohr's research institute in Copenhagen. Both scientists worked closely on quantum theory and the nature of physics. Bohr was away, and Heisenberg was left to ponder things over himself. He was sitting in a chair when he had a shocking but clear realization about the limits of the physical knowledge!

He discovered that, the act of observing alters was the reality being observed. To measure the properties of a particle such as an electron, you need to use a measuring device, usually light or radiation. But he observed that the energy in this radiation affected the particle being observed. If you adjust the light beam to accurately measure position, you need a short-wavelength, high-energy beam. It would tell you position, but its energy would throw off the momentum of the particle.

Then, if you adjust the beam to a longer wavelength and lower energy, you could more closely measure momentum, but position would be inaccurate. Heisenberg and Bohr theories were compatible and became known together as the Copenhagen interpretation and accepted as the foundation for quantum theory.

What did Heisenberg do? (SIMPLE FORM)

When you go a baseball game, there is a radar that is shot at the ball to determine the speed, and the radar never slows down the ball or speeds it up!! If it did, the radar would be banned from baseball games!!

But in the world of atoms, things are so small that light waves bouncing off atoms causes them to change direction and speed, and in some cases, it even knocks the electrons in the atom away from the atom. Can you imagine being knocked over when someone shined a flashlight at you?  Well, if you were as little as an atom you would be knocked over by the light from the sun, or in this case, a flashlight!!

SOURCES

1.    https://quantuman.wordpress.com/2010/07/26/heisenberg-uncertainty-principle-for-kids/

2.    http://www.pbs.org/wgbh/aso/databank/entries/dp27un.html

BOOK:

1.    PHYSICS IN 50 MILESTONE MOMENTS - James Lees

225. My Travel To India

224. Tongue Twisters - Shiny Sun

Shiny sun shines on sunshine shore

(Try to say three times fast)

223. Song - If I were a little bird

 If I were a little bird,
I would fly, far a-way,
From place to place.

If I were a little child,
I would play, and play,
With eve-ry toy.

222. Song - Hey! Where are you?

Hey! Where are you?
Where are you?
Where are you?

I look at you!
look at you!
look at you!

Please! Come to me!
Come to me!
Come to me!

We sing this song!
Sing this song!
Sing this song!

221. Poem - Birthday

Bringing presents

Is 

Really cool

That's the way to celebrate your

Holiday cause there's no other

Day like your birthday

And its just for

YOU!!