A transparent glass with water in it.

Comparisons of 1. opacity, 2. translucency, and 3. transparency. At the back of each material is a star.

Translucent containers

In optics, transparency is the property of allowing light to pass through something.

An object that is transparent can be seen through. The image you see through a transparent object is similar to the image you see without it. However, the object may be changed if the transparent object behaves like a lens or like an optical filter; this could change the size, shape, or color of the image. The opposite of transparency is opacity.