Lustrous Objects
Lustrous objects are those that exhibit a shiny or reflective appearance when light falls on their surface. The luster of an object depends on how it interacts with light. Lustrous objects have a smooth surface that allows light to reflect off it in a regular manner. Examples of lustrous objects include metals like gold, silver, and copper, as well as polished surfaces like mirrors and glass.

Nonlustrous Objects
Nonlustrous objects, on the other hand, do not have a shiny or reflective surface. These objects either absorb or scatter light, causing it to be diffused in different directions. Nonlustrous objects may have rough or irregular surfaces that do not allow light to reflect off them in a regular manner. Examples of nonlustrous objects include paper, wood, plastic, and fabrics.

Differences between Lustrous and Nonlustrous Objects

1. Appearance: Lustrous objects have a shiny and reflective appearance, while nonlustrous objects have a dull and non-reflective appearance.

2. Surface: Lustrous objects have a smooth and polished surface, which allows light to reflect off it in a regular manner. Nonlustrous objects may have rough or irregular surfaces, which scatter or absorb light.

3. Interaction with Light: Lustrous objects reflect light in a regular and predictable manner, resulting in a clear reflection. Nonlustrous objects either absorb or scatter light, causing it to be diffused in different directions, resulting in a dull or non-reflective appearance.

4. Examples: Lustrous objects include metals like gold, silver, and copper, as well as polished surfaces like mirrors and glass. Nonlustrous objects include paper, wood, plastic, and fabrics.

5. Uses: Lustrous objects are often used for decorative purposes, jewelry, and reflective surfaces. Nonlustrous objects are commonly used for functional purposes like writing, building, and packaging.

In conclusion, the main difference between lustrous and nonlustrous objects lies in their appearance, surface characteristics, interaction with light, and potential uses. Lustrous objects have a shiny and reflective appearance due to their smooth surfaces, while nonlustrous objects have a dull and non-reflective appearance due to their rough or irregular surfaces.