Most people notice them in well-lit rooms or outdoors on a bright day. Often floaters are normal, but sometimes they're a sign of a more serious eye problem, such as retinal detachment, especially if you also see light flashes or a dark shadow come across the edge of your vision.
A Composite material (also called a composition material or shortened to composite, which is the common name) is a material made from two or more constituent materials with significantly different physical or chemical properties that, when combined, produce a material with characteristics different from the individual components.
A chemical compound is a chemical that is composed of at least two different types of elements. These elements are combined together in fixed proportions and structures to produce a single type of unique particle. Like an element, a compound is considered a pure substance (meaning there is only one type of particle in the substance).