Don't Believe in love...

Love is the greatest feeling in the whole world. When you are in love, you see mainly the positive sides of the character of the person, you are in love with. Everyone wonder sometimes what the reasons I love you are. However, each one of the persons has different reasons, 

                                              

Well,I don't believe in love ..and i thnk i can never be misled by anyone...hmm...I juz hate love stories in real life..but always fascinated by romantic movies (50 first dates ,P.S I luv u,Maine pyaar kiya..etc long  list )...dat contradicts my thoughts....one song dat drive me crazy all d time ...is when you say nothing at all...and one best liner 4 luv is i thnk is"Love happens once tym and lasts for lifetime "..

As i always want to be rich and successful so there is no such feelings i hv ever thought of...as i dnt know the true meaning of love  ...may be what i hear always that the  true love is something that everyone wants to feel, but it is a fact that only a little part of the people has the luck to meet . What is actually the true love? That is the most beautiful thing that can happen to someone, 

Bt again my thoughts contradicts...and i always thnk if someone really likes u may be there is some mischief behind it might be something fishy or dere is a personal intrest kind related to wealth or any thing ...may be i am wrong in my thoughts but may be dis is the reason dat i never feel for any1..if sm1 tries to flirt wid me i juz hate it ..i dnt knw may be bt i have d pictures in my mind (A person whom i can admire ;  must have a beautiful voice can sing songs 4 me  ;must have a chivalrist behaviour ;loves me d way i am .)...Some of the pictures in my mind : As i always thing " Thoughts are the pictures of your life ..if u can see it in ur mind u can hold it in your hand "...

what makes a boat float ?what males an ice sink on a beer??

An archimedes principle : When an object is immersed in a liquid is buoyed up by a force equal to the weight of the fluid displaced by an object . fluid displaced has a weight W= mg ;mass can be provided by density and its volume .W=PVg

the buoyant force does not depend on the weight or shape of the submerged object, only on the weight of the displaced fluid.


If the density of the object is greater than that of the fluid, the object will sink. If the density of the object is equal to that of the fluid, the object will neither sink or float. If the density of the object is less than that of the fluid, the object will float.


Despite the enormous size of some ships, they are basically metal shells filled with air, and are less dense and lighter than the water they push aside, which allows the boats to float.


Density of the ice is much greater than the water i.e it sinks 

How an aeroplane fly?

how wings generate lift ?

 

A cross section an airplane wing will show the top surface to be more curved than the bottom surface. This shaped profile is called an 'airfoil'. During flight air naturally flows over and beneath the wing .

the air moving over the top of the wing has more distance to cover (because of the curvature it is forced to follow)  in the same amount of time as the air passing below the wing, it has to move faster.

Faster moving air is less dense than slower moving air, so this speed difference results in a lower air pressure on top of the wing, and a higher air pressure below the wing (so the pressure is force per unit area so upper wing has more surface area so the pressure would be less than the lower wing) The result of this pressure gradient is that the wing, and hence the plane, is pushed upwards by the higher pressure.

Why should the rainbow be curved? Why can’t it be a straight line across the two horizons?

A rainbow is always curved just for the reason that all the angles of the water droplet have to be just right for it to reflect some light back to you, standing on the ground. So when there is sunlight behind a viewer, only those water droplets that have the same angle formed by the viewer, the droplet, and the sun (which is approximately 42 degrees) will produce the rainbow effect
A rainbow may look like a half circle when it is formed at sunrise or sunset because the light at that time travels almost horizontally towards the earth. However, as the sun rises high in the sky, the shape of the rainbow would be like an arch rather than a half circle.
Interestingly, from an airplane a rainbow is seen as a full circle

How are rainbows formed?

Sunlight is composed of light of varying wavelengths. Short wavelength light appears blue, violet and indigo, and long wavelength light appears red, orange and yellow.

When sunlight enters a raindrop in the air, the light splits into a multitude of colors. each rain droplet behaves like an independent prism which splits sunlight into its constituent colors.This light then reflects off the back surface of the raindrop and then goes back to the other side in which the light first passed, forming an arch. 


When light enters water it bends (refracts). The amount of bending depends on the wavelength of light. As a result, the light splits into its component colors.

useful links

some useful links...

http://nptel.iitm.ac.in/courses.php?branch=Ece


http://nptel.iitm.ac.in/video.php?courseId=1001&p=1

What would happen if there was no dust?

Without dust there would be less rainfall and sunsets would be less beautiful.


Rain is formed when water molecules in the air collect around particles of dust. When the collected water becomes heavy enough the water droplet falls to the earth as rain. Thus water vapor could be much less likely to turn to rain without the dust particles.


The water vapor and dust particles also serve to reflect the rays of the sun. At sunrise and sunset, when the sun is below the horizon, the dust and water vapor molecules reflect the longer, red, wavelengths of light such that we can see them for more time than any of the other wavelengths. The more dust particles in the air the more colorful the sunrise or sunset.