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:
“the focused beam
folds all energy in:
the image glares filling all space:
the head falls and
hangs and cannot wake itself.”
—Archie Randolph Ammons (b. 1926)
“I am filling the room
with the words from my pen.
Words leak out of it like a miscarriage.
I am zinging words out into the air
and they come back like squash balls.
Yet there is silence.”
—Anne Sexton (1928–1974)
“Religious faith is a most filling vapor.
It swirls occluded in us under tight
Compression to uplift us out of weight....”
—Robert Frost (1874–1963)