A half inch thick steel plate, A half inch thick plywood, Brick, Concrete Block
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Yes, a tissue is an example of a translucent material. When light passes through a tissue, it is scattered in many directions, making the material semi-transparent.
Yes, a sheet of aluminum is considered an opaque material as it does not allow light to pass through it. This means that it blocks the transmission of light and forms a barrier that prevents objects on the other side from being seen.
There are three possible characteristics to a materials reflectivity, which are all due to the orientation of its molecules: Transparent - light travels through the material Reflective - light is redirected away from the material Opaque - light is absorbed by the material Foil absorbing light means it is opaque because that is the definition of the term.
wood Think of any material that you cannot see through. Steel, Concrete, Granite,... These are opaque: Light does not pass from one side to the other. Examples of materials that are not opaque: Water, Glass, Air [a mixture of gases]
No, Styrofoam is not transparent. It is an opaque material, meaning that light does not pass through it easily and it is not see-through.