-balloon-

what are you think about balloon?
it just a simple, but if we study about balloon...it so marvellous.!!!
there are variety of balloon over the world..
there are might be suitable for make decoration or entertainment...

-balloon-

A balloon is an inflatable membrane, including its low density and relatively low cost, have led to a wide range of applications. Balloons are now widely used over the world for greetings or celebration.

Party balloons are mostly made of natural latex tapped from rubber trees, and can be filled with air,helium ,water or any other suitable liquid or gas. The rubber's elasticity makes the volume adjustable.

Filling the balloon with air can be done with the mouth, a manual or electric inflater (such as a hand pump), or with a source of compressed gas.

When rubber balloons are filled with helium so that they float, they typically retain their buoyancy for only a day or so. The enclosed helium atoms escape through small pores in the latex which are larger than the helium atoms. Balloons filled with air usually hold their size and shape much longer.