What are the difference between opaque transparent translucent?

Answer 1

Something that is opaque will prevent essentially all the light striking it from passing through it.

Something that is transparent will permit essentially all the light that striks it to pass through it in a way that makes the objects on one side clearly visible from the other side.

something that is translucent will let some of the light that strikes it pass through, but will also scatter the light to it is not possible to see object on the opposite side.

Examples:

Opaque - a solid brick wall

Transparent - a pane of glass

Translucent - the covering of a lighted sign that lets you see the light illuminating the letters and drawings, but does not let you seethe light bulbs that provide the light.