Filling
Every toy balloon has an opening through which gases are blown into it. Balloons are usually filled by using one's breath, a pump, or a pressurized gas tank. The opening can then be tied off or clamped. Foil balloons are typically self-sealing. By filling a balloon with a gas lighter than air, such as helium, the balloon can be made to float. Helium is the preferred gas for floating balloons, because it is inert and will not catch fire (like hydrogen) or cause toxic effects when inhaled. Small, light objects (postcards, in balloon mail for example) are sometimes placed in balloons along with helium and released into the air and, when the balloon eventually falls, the object inside might be found by another person. Rubber balloons can also be filled with liquids (usually water) and can burst when they impact a solid object. Liquid-filled balloons are commonly referred to as water balloons or water bombs and used in playful fights, and sometimes vandalism.
Read more about this topic: Toy Balloon
Famous quotes containing the word filling:
“... how often the Presidency has simply meant that a man shall be abused, distrusted, and worked to death while he is filling the great office, and that he should drop into unmerited oblivion when he has left the White House ...”
—M. E. W. Sherwood (1826–1903)
“Oh, but it is dirty!
Mthis little filling station,
oil-soaked, oil-permeated
to a disturbing, over-all
black translucency.
Be careful with that match!”
—Elizabeth Bishop (1911–1979)
“To play is nothing but the imitative substitution of a pleasurable, superfluous and voluntary action for a serious, necessary, imperative and difficult one. At the cradle of play as well as of artistic activity there stood leisure, tedium entailed by increased spiritual mobility, a horror vacui, the need of letting forms no longer imprisoned move freely, of filling empty time with sequences of notes, empty space with sequences of form.”
—Max J. Friedländer (1867–1958)