A shard or sliver is a small piece or part of something, especially a piece of glass. But other kinds of items, it could also be a fragment.
tinted glass
No wavelengths.
When light passes through a flat piece of glass, like a window, the light is refracted at both surfaces, but the exiting ray of light is parallel to the entering ray and hence the light's path is not really changed.
Magenta
Looking glass is another word for mirror.
glass
Another word is master piece.
A piece
Mirror
rim
An essay is a piece of writing.
Etude
fragment
Jar,containor
a piece of glass is a transparent object
a song