Try your hardware store.
Boomwhackers are light weight, hollow plastic tubes that come in different colors that are tuned to musical pitches by length. Boomwhackers are musical instruments in the percussion family.
Most commonly it's used to score small diameter glass tubing before breaking it so that it will break cleanly instead of shattering. Don't attempt to saw through the tubing with the file. If it won't break cleanly with a light score, you'll need to use a different technique such as scribing followed by thermal shock.
they have hollow bones because they need to be light
Most commonly it's used to score small diameter glass tubing before breaking it so that it will break cleanly instead of shattering. Don't attempt to saw through the tubing with the file. If it won't break cleanly with a light score, you'll need to use a different technique such as scribing followed by thermal shock.
bird bones are hollow. that is why they are light
Bones are light because they are hollow in the middle.
They are hollow and light.
yes
Plastic is most of the time light to carry by itself, unless there is something in the plastic.
About 100 light-years in diameter.
Hollow fur means that each hair is a clear hollow tube which reflects the light. Some of the animals that have hollow fur are polar bears, alpacas, and reindeers.
Wings and Hollow Bones